JP2021102348A - Method for producing article and laminating device - Google Patents

Abstract

SOLUTION: There is provided a method for producing an article in which a first member and a second member are bonded together by using a first adhesive layer and a second adhesive layer which can be cured and adhered by contacting each other, the method for producing an article comprising: a first preparation step for preparing a member having a first adhesive sheet, in which one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer is bonded to the first member; a second preparation step for preparing a member having a second adhesive sheet, in which one surface of the second adhesive layer of the second adhesive sheet having the second adhesive layer is bonded to the second member; and a bonding step of bonding the other surface of the first adhesive layer of the member having the first adhesive sheet to the other surface of the second adhesive layer of the member having the second adhesive sheet.SELECTED DRAWING: Figure 6

Description

The present disclosure relates to a method for manufacturing an article using an adhesive sheet, and a laminating device used therein.

In the manufacturing process of an article, a coating bonding method using a liquid adhesive is used to bond each member constituting the article. Examples of the liquid adhesive include a one-component adhesive (Patent Document 1) in which the reaction is started by oxygen and moisture in the air, and a two-component adhesive in which the main agent and the curing agent are separated. As the two-component adhesive, for example, a two-component mixed adhesive in which the reaction is started by mixing the main agent and the curing agent, a liquid material containing the main agent and a liquid material containing the curing agent are separately applied. There are two-component separate coating type adhesives (Patent Documents 2 to 5) in which the reaction starts when they are brought into contact with each other. The two-component separate coating type adhesive is also generally called a honeymoon type adhesive, a non-mixed type two-component curable adhesive, or the like.

Further, a double-sided adhesive tape is also used instead of the liquid adhesive for adhering the members (Patent Document 6). Since an adhesive material is usually used for the double-sided adhesive tape and curing is not required, the members can be adhered regardless of the type of the member, the manufacturing environment of the article, and the like.

Japanese Patent No. 5021471 Japanese Unexamined Patent Publication No. 2008-7777 Japanese Unexamined Patent Publication No. 2006-282952 Japanese Patent No. 5365003 Japanese Unexamined Patent Publication No. 2004-292608 Japanese Unexamined Patent Publication No. 2001-72949 Japanese Unexamined Patent Publication No. 58-118876 JP-A-2010-37389 Japanese Unexamined Patent Publication No. 2006-312743 Japanese Unexamined Patent Publication No. 9-291260 JP-A-2010-7023 Japanese Unexamined Patent Publication No. 2014-43099 Japanese Unexamined Patent Publication No. 2008-288601

However, when bonding members using a liquid adhesive, coating is difficult depending on the location and position of the members, and uneven coating, coating leakage, adhesive squeeze out from the adherend surface, and liquid dripping occur. It will occur. Further, in the case of a two-component mixed type adhesive, it takes time and effort to measure and mix the two liquids, and it is difficult to stop the coating work in the middle after mixing the two liquids. Further, in the case of a one-component adhesive, the curability changes depending on the surrounding environment, the state of the adherend, and the like, so that stable adhesiveness cannot be maintained. As described above, the liquid adhesive has a problem that the production of the article is complicated in terms of handling and the like.

On the other hand, when the members are bonded using the double-sided adhesive tape, the above-mentioned problems peculiar to the liquid adhesive are unlikely to occur. Further, since the adhesive material does not require curing and curing, the bonding process can be simplified. However, since the adhesive material is inferior in adhesive strength to the adhesive, the members cannot be firmly adhered for a long period of time, and the heat resistance and weather resistance are also inferior. Therefore, the adhesive strength of the double-sided adhesive tape depends on the surrounding environment. There is a problem that the member is lowered in a short period of time and the member is easily peeled off. Further, when shear stress is applied to the adhesive surface between the double-sided adhesive tape and the member, misalignment is likely to occur. Among them, when the adhesive surface is a vertical surface or a normal surface, the shear stress in the vertical direction or the normal direction is generated. By hanging, the above-mentioned problems tend to occur easily. For this reason, the members cannot be sufficiently adhered only with the double-sided adhesive tape, and it is necessary to use it in combination with another fixing method such as anchor fixing.

The present disclosure has been made in view of the above problems, and is a method for manufacturing an article using a pair of adhesive sheets each having an adhesive layer capable of being cured and adhered by contacting each other, and used therefor. The main purpose is to provide a laminating device.

The present disclosure is a method for manufacturing an article in which a first member and a second member are bonded together by using a first adhesive layer and a second adhesive layer that can be cured and adhered by contacting each other. A first preparatory step for preparing a member with a first adhesive sheet, in which one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer is bonded to one member, and the second. A second preparatory step for preparing a member with a second adhesive sheet, in which one surface of the second adhesive layer of the second adhesive sheet having the second adhesive layer is bonded to the member, and the first adhesive Provided is a method for producing an article having a bonding step of bonding the other surface of the first adhesive layer of the member with a sheet and the other surface of the second adhesive layer of the member with a second adhesive sheet. ..

The present disclosure is a method for manufacturing an article in which a first member and a second member are bonded together by using a first adhesive layer and a second adhesive layer that can be cured and adhered by contacting each other. A preparatory step for preparing a member with a first adhesive sheet, in which one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer is bonded to one member, and the first adhesive sheet. A second adhesive that forms a member with a multi-layer adhesive sheet by adhering one surface of the second adhesive layer of the second adhesive sheet having the second adhesive layer to the other surface of the first adhesive layer of the attachment member. Provided is a method for manufacturing an article having a sheet bonding step and a second member bonding step of bonding the second member to the other surface of the second adhesive layer of the member with a multilayer adhesive sheet.

The present disclosure is a method for manufacturing an article in which a first member and a second member are bonded together by using a first adhesive layer and a second adhesive layer that can be cured and adhered by contacting each other. A multilayer formed by bonding one surface of the first adhesive layer of the first adhesive sheet having one adhesive layer and one surface of the second adhesive layer of the second adhesive sheet having the second adhesive layer. A preparatory step for preparing an adhesive sheet, a first member bonding step of bonding the first member to the other surface of the first adhesive layer of the multilayer adhesive sheet to form a member with a multilayer adhesive sheet, and the above. Provided is a method for manufacturing an article having a second member bonding step of bonding the second member to the other surface of the second adhesive layer of the member with a multilayer adhesive sheet.

The present disclosure is a method for manufacturing an article using a first adhesive layer and a second adhesive layer that can be cured and adhered by contacting each other, and the first member has the first adhesive layer. 1 A preparatory step for preparing a member with a first adhesive sheet to which one surface of the first adhesive layer of the adhesive sheet is bonded, and the other surface of the first adhesive layer of the member with the first adhesive sheet. Provided is a method for producing an article having a second adhesive sheet bonding step of bonding one surface of the second adhesive layer of the second adhesive sheet having the second adhesive layer.

The present disclosure is a method for producing an article using a first adhesive layer and a second adhesive layer that can be cured and adhered by contacting each other, and is the above-mentioned first adhesive sheet having the first adhesive layer. A preparatory step for preparing a multi-layer adhesive sheet in which one surface of the first adhesive layer and one surface of the second adhesive layer of the second adhesive sheet having the second adhesive layer are bonded to each other, and the multi-layer Provided is a method for producing an article having a first member bonding step of bonding the first member to the other surface of the first adhesive layer of the adhesive sheet.

The present disclosure is a laminating device for laminating a first adhesive sheet provided with a first adhesive layer and a second adhesive sheet provided with a second adhesive layer, wherein the first adhesive layer and the second adhesive layer are adhered to each other. The layers can be cured and adhered by coming into contact with each other, and the first discharge portion and the first discharge portion for discharging the first adhesive layer of the first adhesive sheet so as to be attached to an adherend. 2. The second adhesive layer of the adhesive sheet is attached to the first adhesive layer of the first adhesive sheet and is attached to the first adhesive layer of the first adhesive sheet. The direction in which the first adhesive sheet is discharged by the 1 discharge unit is the same as the direction in which the second adhesive sheet is discharged by the second discharge unit, and the first discharge unit is the first adhesive sheet. Further, the present invention provides a laminating apparatus which is arranged on the upstream side of the second discharging portion along the direction in which the second adhesive sheet is discharged.

The present disclosure is a laminating device for laminating a first adhesive sheet provided with a first adhesive layer and a second adhesive sheet provided with a second adhesive layer, wherein the first adhesive layer and the second adhesive layer are adhered to each other. The layers can be cured and adhered by contacting each other, and the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet are overlapped with each other. A stacking device having the first adhesive sheet and the discharge portion for discharging the second adhesive sheet so that the first adhesive layer of the first adhesive sheet is attached to the adherend. I will provide a.

The present invention has an effect that it is possible to provide a method for manufacturing an article using an adhesive layer that can be cured and adhered by contacting each other, and a laminating device used for the method.

It is a schematic diagram which shows an example of the adhesive sheet used in the manufacturing method of the article of this disclosure. FIG. 3 is a schematic plan view and a cross-sectional view showing another example of the adhesive sheet used in the method for manufacturing the article of the present disclosure. It is a schematic diagram which shows an example of the member with an adhesive sheet in the manufacturing method of the article of this disclosure. FIG. 3 is a schematic plan view and a cross-sectional view showing another example of the adhesive sheet used in the method for manufacturing the article of the present disclosure. It is a schematic diagram which shows another example of the member with an adhesive sheet in the manufacturing method of the article of this disclosure. It is a process drawing which shows an example of 1st Embodiment of the manufacturing method of the article of this disclosure. It is a process drawing which shows another example of 1st Embodiment of the manufacturing method of the article of this disclosure. It is a process drawing which shows another example of 1st Embodiment of the manufacturing method of the article of this disclosure. It is a process drawing which shows another example of 1st Embodiment of the manufacturing method of the article of this disclosure. It is a process drawing which shows an example of the 2nd Embodiment of the manufacturing method of the article of this disclosure. It is a process drawing which shows other example of 2nd Embodiment and 3rd Embodiment of the manufacturing method of the article of this disclosure. It is a process drawing which shows an example of the 3rd Embodiment of the manufacturing method of the article of this disclosure. It is a process drawing which shows an example of 4th Embodiment of the manufacturing method of the article of this disclosure. It is schematic cross-sectional view which shows an example of the article obtained by the 4th Embodiment of the manufacturing method of the article of this disclosure. It is a process drawing which shows an example of 5th Embodiment of the manufacturing method of the article of this disclosure. It is explanatory drawing for demonstrating the overlap pasting. It is the schematic which shows an example of the stacking apparatus of this disclosure. It is the schematic which shows the other example of the stacking apparatus of this disclosure. It is the schematic which shows the other example of the stacking apparatus of this disclosure. It is explanatory drawing explaining the 1st discharge part and 2nd discharge part in the stacking apparatus of this disclosure. It is explanatory drawing explaining the 1st discharge part and 2nd discharge part in the stacking apparatus of this disclosure. It is the schematic which shows an example of the handle part in the stacking apparatus of this disclosure. It is a photograph which shows another example of the stacking apparatus of this disclosure. It is a photograph which shows another example of the stacking apparatus of this disclosure. It is the schematic perspective view which shows the other example of the stacking apparatus of this disclosure. It is the schematic perspective view which shows the other example of the stacking apparatus of this disclosure. It is the schematic which shows the other example of the stacking apparatus of this disclosure. It is explanatory drawing explaining the overlap part and the discharge part in the stacking apparatus of this disclosure.

The present inventor has made diligent studies in order to solve the above-mentioned problems of the adhesive and the double-sided adhesive tape when adhering the members in the manufacture of the article. As a result, the present inventor uses an adhesive sheet in which two types of liquid materials of the two-component separate coating type adhesive are each made into a sheet, thereby having both of them while compensating for the above-mentioned drawbacks of the adhesive and the double-sided adhesive tape. I learned that it is possible to bond members by taking advantage of them.

In the method for producing an article using a two-component separate coating type adhesive, for example, as disclosed in Patent Documents 2 and 3, two types of liquid materials are usually separately applied to the adherend surface of each member and then each. The members are bonded to each other by bringing the liquid material coated surfaces of the members into contact with each other and curing them at room temperature. However, the method for producing an article by the coating and bonding method has the above-mentioned problems.

On the other hand, the present inventor uses a two-component separate coating type adhesive to prepare an adhesive sheet having an adhesive layer formed from one of two types of liquid materials and an adhesive sheet having an adhesive layer formed from the other. Has developed a pair of adhesive sheet sets. Then, when each adhesive sheet was attached to a separate member and the adhesive layers of each member were brought into contact with each other, it was found that normal temperature curing proceeded as in the coating bonding method, and the members could be firmly bonded. It was. Further, it has been found that the use of the above-mentioned adhesive sheet set makes it easier to manufacture the article than the coating adhesive method. It should be noted that Patent Documents 2 to 5 do not disclose or suggest the sheet formation of each liquid material of the two-component separate coating type adhesive.

Further, according to the adhesive sheet set, the present inventor can cure the adhesive at a relatively low temperature, so that it is possible to suppress the occurrence of warpage and floating of the member, and the difference in material and expansion rate. It was found that it is possible to combine and bond various members regardless of the above. For example, an adhesive sheet made from a thermosetting adhesive into a sheet has a problem that when members having significantly different materials and expansion rates are bonded together, the members warp or float when the adhesive is heat-cured. The combination of members to be bonded is limited by the material and the like. In particular, when the metal member and the plastic member are bonded together, the above problem becomes remarkable. On the other hand, according to the adhesive sheet set formed from the two-component separate coating type adhesive, it is possible to cure at a relatively low temperature, so that the above-mentioned problems can be suppressed.

The method of manufacturing the article and the laminating device of the present disclosure are based on these findings described above. Hereinafter, the manufacturing method of the article and the laminating apparatus of the present disclosure will be described in detail. In the present specification, the first adhesive layer and the second adhesive layer may be simply referred to as an adhesive layer, and the first adhesive sheet and the second adhesive sheet may be simply referred to as an adhesive sheet. is there. Further, the first member and the second member may be simply referred to as members. Further, the member with the first adhesive sheet and the member with the second adhesive sheet may be simply referred to as the member with the adhesive sheet.

I. Manufacturing Method of Article First, a manufacturing method of the article of the present disclosure will be described. The method for producing the article of the present disclosure has five embodiments. Hereinafter, the adhesive sheet used in the method for producing the article of the present disclosure and each embodiment of the method for producing the article of the present disclosure will be described.

A. First Adhesive Sheet and Second Adhesive Sheet In the present disclosure, the first adhesive sheet includes a first adhesive layer, the second adhesive sheet includes a second adhesive layer, and the first adhesive sheet and the second adhesive sheet are first. The adhesive layer and the second adhesive layer are configured to be cured and adhered by contacting each other.

1 (a) and 1 (b) are schematic views showing an example of an adhesive sheet. The first adhesive sheet 11 includes a first adhesive layer 22, and the second adhesive sheet 12 includes a second adhesive layer 24. The first adhesive sheet 11 and the second adhesive sheet 12 are in a pair, and when the first adhesive layer 22 and the second adhesive layer 24 come into contact with each other, they are cured to exhibit strong adhesive force and firmly adhere to each other. It is configured to be possible. The first adhesive sheet 11 may have a first separator 21 arranged on at least one surface side of the first adhesive layer 22, and as shown in FIG. 1A, one surface of the first adhesive layer May have a first separator, and as shown in FIG. 1 (b), a first separator may be provided on both sides of the first adhesive layer. Similarly, the second adhesive sheet 12 may have a second separator 23 arranged on at least one surface side of the second adhesive layer 24, and as shown in FIG. 1A, the second adhesive sheet 12 may have a second adhesive. The second separator may be provided on one side of the layer, or the second separator may be provided on both sides of the second adhesive layer as shown in FIG. 1 (b).

Hereinafter, each configuration of the first adhesive sheet and the second adhesive sheet will be described.

1. 1. First Adhesive Layer and Second Adhesive Layer The first adhesive layer and the second adhesive layer can be cured and adhered by contacting each other. Hereinafter, the physical characteristics, properties and materials of the first adhesive layer and the second adhesive layer will be described.

(1) Physical Properties The first adhesive layer and the second adhesive layer may or may not have adhesiveness before curing, but may have adhesiveness. Since photo-curing type and thermosetting type adhesives need to be cured until the curing is completed, the bonded state must be maintained by the desired curing time, pressing, etc. after the members are bonded via the above adhesive. Therefore, the work of the bonding process becomes complicated. On the other hand, since the first adhesive layer and the second adhesive layer have adhesiveness, the adhesive force of both adhesive layers keeps the members and the adhesive layers in a bonded state until the contact curing is completed. It can be cured and cured while being held. In the present specification, the "adhesiveness of the adhesive layer" means the adhesiveness of the adhesive layer before contact (before curing) unless there are special circumstances.

Here, "adhesion" is a concept included in "adhesion". Adhesion is sometimes used to mean a temporary adhesion phenomenon, while adhesion is sometimes used to mean a virtually permanent adhesion phenomenon (Iwanami Shoten, Physics and Chemistry Dictionary, 5th Edition). "Adhesiveness" and "adhesive strength" refer to the property of adhering by pressure sensitivity and the adhesive strength at that time. When the adhesive layer has adhesiveness, it means that the adhesive layer before contact curing has an adhesive force (adhesive force) sufficient to temporarily fix the member. That is, the adhesive layer before curing has a weaker adhesive force than that after curing. The specific adhesiveness of the adhesive layer will be described later.

The adhesive strength of the first adhesive layer and the second adhesive layer before contact (before curing) can be appropriately set according to the type of each adhesive layer, the type of member, and the arrangement mode. The adhesive strength of the adhesive layer to the adherend can be at least in the range of 0.05 N / inch or more and 50 N / inch or less, and in particular, in the range of 0.1 N / inch or more and 40 N / inch or less. Can be done.

The adhesive layer can be further classified into weak adhesive, medium adhesive, and strong adhesive according to the magnitude of the adhesive force. Specifically, the adhesive strength is weakly adhesive in the range of 0.05 N / inch or more and less than 1 N / inch, medium adhesive in the range of 1 N / inch or more and less than 5 N / inch, 5 N / inch or more, 50 N. Strong adhesiveness can be achieved within the range of / inch or less. Medium adhesiveness can be included in weak adhesiveness depending on the application and physical characteristics. By making the adhesive layer weakly adhesive, the handleability (workability) and reworkability of the adhesive layer can be improved. On the other hand, the reactivity can be improved by making it strongly adhesive. Further, by making the adhesive layer medium adhesive, it is possible to improve workability, reworkability and reactivity. The first adhesive layer and the second adhesive layer can exhibit desired functions by combining these adhesiveness.

By making the adhesive layer weakly adhesive or medium-adhesive, it can be easily peeled off, reattached, and reworkability can be improved. Taking advantage of these characteristics, for example, the adhesive sheet is moved and bonded to the member, the member is moved and bonded to the adhesive sheet, and the other member is moved to one member with the adhesive sheet. It is possible to bond the other member with an adhesive sheet to one member.

Further, since at least one of the first adhesive layer and the second adhesive layer exhibits weak adhesiveness or medium adhesiveness, the first adhesive layer and the second adhesive layer can be easily peeled off and reattached, and the reworkability can be improved. Taking advantage of these characteristics, for example, in addition to the above example, the other member with an adhesive sheet is moved and bonded to one member with an adhesive sheet, and the other member is adhered to the member with an adhesive sheet. Move and bond the sheets, move and bond the other adhesive sheet to one adhesive sheet, attach the other adhesive sheet to one adhesive sheet, and attach the other adhesive sheet to one adhesive sheet. On the other hand, the other adhesive sheet can be moved and bonded.

The stronger the adhesive force, the lower the cohesive force and the more flexible the adhesive layer, while the weaker the adhesive force, the higher the cohesive force and the harder the layer. The adhesiveness of the adhesive layer can be adjusted by adjusting the thickness, composition, and the like.

Further, of the first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer, at least the first adhesive component contains a curable organic compound, a curable inorganic material, or the like. In the case, the first adhesive layer and the second adhesive layer can each have a desired adhesive strength. The adhesive strength of the first adhesive layer can be 0.05 N / inch or more, especially 0.1 N / inch or more, particularly 0.5 N / inch or more, and 50 N / inch or less, especially 40 N / inch or less. In particular, it can be 30 N / inch or less. On the other hand, the adhesive strength of the second adhesive layer can be 0.05 N / inch or more, particularly 0.1 N / inch or more, particularly 0.2 N / inch or more, and 30 N / inch or less, especially 20 N / inch or more. Hereinafter, it can be particularly 10 N / inch or less. When at least the second adhesive component contains a curable organic compound, a curable inorganic material, or the like, the adhesive strength of the first adhesive layer and the second adhesive layer is the opposite.

The adhesive strength of the first adhesive layer and the second adhesive layer is exhibited at least immediately after being attached to the adherend, and is retained until the curing reaction is completed by the contact of the first adhesive layer and the second adhesive layer. Can be held, especially for about a year.

The adhesive strength to the adherend can be measured by the following method. An adhesive sheet having no separator on both sides is measured after a separator (for example, PET separator PET28 × IJ0 manufactured by Nipper Co., Ltd.), which is a release film, is attached. First, an adhesive sheet having separators on both sides of the adhesive layer is cut into a size of 25.4 mm in length and 150 mm in width, one of the separators is peeled off, and a PET film (A4100 manufactured by Toyobo Co., Ltd.) is placed on the exposed adhesive layer. ) Are bonded using a manual roller. Then, the other separator is peeled off, and a SUS plate (304BA, adherent surface: polished surface, sample: 25.4 mm in length, 150 mm in width) is bonded onto the exposed adhesive layer using a manual roller. After that, the adhesive layer with the PET film is peeled off by hand from the SUS plate by about 20 mm, and using a tensile tester (manufactured by A & D Co., Ltd., model number: RTF-1150H), JIS Z0237: 2009 (adhesive). Conditions (tensile speed:: test method for peeling the tape and sheet to a stainless steel test plate at 180 °, temperature 23 ° C, humidity 50%) and method 1 of the tape / adhesive sheet test method) and adhesive strength test method. The adhesive strength (N / inch) to the SUS plate surface can be measured at 300 mm / min, peeling distance: 150 mm, peeling angle: 180 °). In addition, 1 inch is 25.4 mm. The adhesive strength described later can also be measured by this method.

In addition, the retention characteristics for the adherend in the above case can be measured by the following method. An adhesive sheet having no separator on both sides is measured after a separator (for example, PET separator PET28 × IJ0 manufactured by Nipper Co., Ltd.), which is a release film, is attached. First, an adhesive sheet provided with separators on both sides of the adhesive layer is cut into a size of 12.5 mm in length × 25 mm in width, one separator is peeled off, and one adherend is placed on the exposed adhesive layer. The tip of a certain iron plate (hot-dip galvanized steel plate, length 100 mm × width 25 mm × thickness 1.5 mm) is attached. The adhesive layer is attached so as to cover up to 12.5 mm in the length direction and the entire width direction from the edge of the adherend. Next, the other separator is peeled off from the adhesive sheet attached to the iron plate, and the other adherend is the iron plate (hot-dip galvanized steel plate, length 100 mm × width 25 mm × thickness 1) on the exposed adhesive layer. Attach the tip of .5 mm). The adhesive layer is attached so as to cover the entire width direction from the edge of the iron plate to 12.5 mm in the length direction. Then, the adhesive layer of one adherend to which the adhesive layer is attached and the adhesive layer of the other adherend to which the adhesive layer is attached are overlapped with each other facing each other, and the adhesive layers of each adherend are overlapped with each other. Specimens are obtained by laminating so that the ends on the side where the adhesive layer is not affixed face each other and do not overlap. Next, with a holding force tester, the upper side of one adherend of the test piece was temporarily fixed, and a load of 200 g was applied to the lower side of the other adherend of the test piece at 23 ° C. and 50% RH. Check if it can be held without slipping in the environment. The time during which the adhesive layer can be held without slippage or the like can be set as the time during which the adhesive layer can have holding characteristics. As the holding force tester, for example, BE-501 manufactured by Tester Sangyo Co., Ltd. can be used.

Here, the above "at least" is an adhesive force capable of maintaining the bonded state when the adhesive layer is bonded to the adherend as long as it has the minimum range of adhesive force. It means a certain range. Then, while the adhesive layer has an adhesive force in this range, the adherend can be preferably attached to the adhesive layer.

The adhesiveness and holding characteristics of the first adhesive layer and the second adhesive layer to the adherend can be set in more detail according to the type of the member and the direction of the adherend surface. For example, when the members are bonded together, the adhesive surface (adhesion surface) between the first member and the second member and the adhesive layer is -45 degrees or more and +45 degrees or less with respect to the vertical plane or the normal plane. Within the range, especially within the range of -30 degrees or more and +30 degrees or less, especially within the range of -15 degrees or more and +15 degrees or less, the adhesiveness and holding characteristics of the adhesive layer to the member depend on the weight of the member. Can be high. This is because even when a heavy member is used, the bonded state can be maintained until the curing reaction due to the contact between the first adhesive layer and the second adhesive layer is completed. Further, it is possible to prevent the member bonded to the adhesive layer from falling due to its own weight due to the shear stress received from the vertical direction or the normal direction.

When the adhesive surface (adhesive surface) between the member and the adhesive layer is within the above range with respect to the vertical plane or the normal plane, the adhesive force of the adhesive layer to the adherend is the adhesion to the adherend described above. Within the range of force, it can be appropriately adjusted according to the weight of the member. The adhesive strength can be in the range of 0.05 N / inch or more and 50 N / inch or less, and in particular, in the range of 0.1 N / inch or more and 40 N / inch or less. Further, the adhesive strength is exhibited at least immediately after being attached to the adherend, and can be retained until the curing reaction is completed by contact with the first adhesive layer and the second adhesive layer, and among them, about 1 Can be retained for years.

Further, in the above case, the adhesive layer further has a holding force for one day or more in a state where a load of at least 200 g is applied in the above-mentioned test method for holding characteristics, and the adhesive force to the adherend at that time. Can be 5 N / inch or more. Normally, the time required for curing by contact between the first adhesive layer and the second adhesive layer depends on the composition, but since it is about one day, a predetermined load is applied for at least one day required for curing. It can be held in a state and can exhibit a desired adhesive force with respect to the adherend.

On the other hand, the adhesive surface (adhesive surface) between the first member and the second member and the adhesive layer is within the range of −45 degrees or more and +45 degrees or less, especially within the range of -30 degrees or more and +30 degrees or less with respect to the horizontal plane. In particular, when the temperature is in the range of −15 ° C. or higher and + 15 ° C. or lower, the adhesive layer can exhibit adhesive strength and holding characteristics capable of temporarily fixing the members to each other until curing. When the adhesive surface (adhesive surface) between the member and the adhesive layer is within the above range with respect to the horizontal plane, the adhesive force of the adhesive layer to the adherend is within the range of the adhesive force to the adherend described above. , It can be adjusted appropriately according to the type of member. The adhesive strength can be in the range of 0.05 N / inch or more and 20 N / inch or less, and in particular, in the range of 0.1 N / inch or more and 20 N / inch or less. Further, the adhesive strength is exhibited at least immediately after being attached to the adherend, and can be retained until the curing reaction is completed by contact with the first adhesive layer and the second adhesive layer, and among them, about 1 Can be retained for years.

The first adhesive layer and the second adhesive layer can exhibit desired adhesiveness to the other adhesive layer depending on the direction of the adhesive surface between the adhesive layers. For example, the adhesive surface between the adhesive layers is within the range of −45 degrees or more and +45 degrees or less, especially within the range of -30 degrees or more and +30 degrees or less, especially -15 degrees or more and +15 degrees with respect to the vertical surface or the normal surface. If it is within the following range, the adhesiveness and holding characteristics between the first adhesive layer and the second adhesive layer can be increased. Further, the adhesive surface between the adhesive layers is within the range of −45 degrees or more and +45 degrees or less, particularly within the range of -30 degrees or more and +30 degrees or less, particularly within the range of -15 degrees or more and +15 degrees or less. In this case, the adhesiveness and holding properties between the first adhesive layer and the second adhesive layer are not particularly limited. Between the first adhesive layer and the second adhesive layer when the adhesive surface between the adhesive layers is within the above range with respect to the vertical plane or the normal plane, and when it is within the above range with respect to the horizontal plane. The specific adhesive strength, holding characteristics, and effects thereof can be the same as the above-mentioned values of the adhesive strength of the adhesive layer to the adherend, the holding characteristics, and the effects thereof.

The adhesive strength between the first adhesive layer and the second adhesive layer can be measured by the following method. First, an adhesive sheet provided with a first separator on both sides of the first adhesive layer and a PET film (A4100 manufactured by Toyobo Co., Ltd.) are attached in the same manner as in the method used for measuring the adhesive strength of the adhesive layer described above. Can fit. Next, the adhesive sheet provided with the second separator on both sides of the second adhesive layer is also cut to the same size, and the SUS plate (304BA, 304BA, Adhesive surface: polished surface, sample: length 25.4 mm, width 150 mm) are bonded together using a manual roller. After that, the first separator on the first adhesive layer and the second separator on the second adhesive layer are peeled off, and the exposed adhesive layers are bonded to each other with a manual roller, and then the first adhesive layer on the PET film is attached. , It can be peeled off by about 20 mm on the adhesive surface with the second adhesive layer, and the adhesive force to the second adhesive layer can be measured using a tensile tester. The conditions of the tensile test can be the same as the above-mentioned measurement conditions of the adhesive force to the adherend.

Since at least one of the first adhesive layer and the second adhesive layer exhibits low viscosity or high viscosity, the first adhesive layer and the second adhesive layer can be moved in parallel to the adherend surface while being bonded before the curing is completed. Can be adjusted. Taking advantage of these characteristics, for example, the other adhesive sheet-attached member is slid and attached to one adhesive sheet-attached member in a parallel direction, and the other adhesive sheet is attached to one adhesive sheet-attached member. Slide and attach the other adhesive sheet to one adhesive sheet by sliding in the parallel direction, slide the other adhesive sheet in the parallel direction to one adhesive sheet and attach them. It can be moved and pasted together.

The high and low viscosities of the first adhesive layer and the second adhesive layer can be classified according to the value of the loss tangent. The fact that at least one of the first adhesive layer and the second adhesive layer exhibits low viscosity means that at least one of the first adhesive layer and the second adhesive layer has a loss tangent at 23 ° C. (hereinafter, also referred to as “tan δ (23 ° C)”). It means that it is 0.2 or less, and in particular, it can be 0.1 or less. Further, when at least one of the first adhesive layer and the second adhesive layer exhibits high viscosity, the tan δ (23 ° C.) of at least one of the first adhesive layer and the second adhesive layer is 0.5 or more. Above all, it can be 1.0 or more.

tan δ is one of the parameters showing the stress relaxation behavior (deformation delay when a force is applied), reflecting the viscosity of the adhesive layer. When the value of tan δ is small, the restoration due to the deformation of the adhesive layer is likely to occur quickly, and when the value is large, the restoration due to the deformation is likely to occur slowly. For tan δ, for example, using a solid viscoelastic analyzer RSA-III manufactured by TA Instruments Co., Ltd. as a measuring device, JIS K7244-1: 1998 (Plastic-Dynamic Mechanical Properties Test Method-Part 1: General Rules) ) (Attachment mode: compression mode, frequency: 1 Hz, temperature: -50 ° C to 150 ° C, temperature rise temperature: 5 ° C / min) measured elastic modulus of storage and loss elasticity It can be calculated from "rate" (tan δ = E "/ E'). The viscosities of the first adhesive layer and the second adhesive layer can be appropriately adjusted according to the composition and compounding ratio of the components contained in each layer.

Further, the first adhesive layer and the second adhesive layer become a cured adhesive layer by contact curing. The cured adhesive layer will be described later.

(2) Combination of Adhesive Strengths of First Adhesive Layer and Second Adhesive Layer The first adhesive layer and the second adhesive layer have functions required between two adhesive layers such as workability, reactivity, reworkability, and holding characteristics. , The adhesive strength of both can be appropriately selected and combined according to the intended use of the article after bonding. Hereinafter, the combination of the adhesive strengths of the first adhesive layer and the second adhesive layer will be described for each required function.

(A) Combination that improves workability The first adhesive layer and the second adhesive layer have an adhesive force that improves workability such that the adhesive layer does not easily adhere to the operator's hand when both are bonded together. Can be a combination of. As such a combination, the adhesive strength of the first adhesive layer and the adhesive strength of the second adhesive layer can be in the range of 0.05 N / inch or more and less than 1 N / inch, respectively. That is, both the first adhesive layer and the second adhesive layer can be made weakly adhesive. By making the first adhesive layer and the second adhesive layer weakly adhesive to each other, the adhesive layer is less likely to adhere to the hand when they are bonded, and the bonding work can be easily performed, improving workability. Can be done.

(B) Combination of Good Reworkability The first adhesive layer and the second adhesive layer can be a combination of adhesive strengths of at least one of which has good reworkability. As such a combination, one of the first adhesive layer and the second adhesive layer may have a stronger adhesive force than the other. Since the adhesive layer with strong adhesive strength is soft and the adhesive layer with weak adhesive strength is hard, by combining adhesive layers with different softness, even if they are bonded once, if the curing reaction is not completed, the first adhesive layer This is because the adhesive surface between the and the second adhesive layer can be peeled off and reattached, and the reworkability can be improved.

As a combination of the first adhesive layer and the second adhesive layer in which the adhesive strength of one is stronger than the adhesive strength of the other, the adhesive strength of one is set within the range of 5 N / inch or more and 50 N / inch or less, and the adhesive strength of the other is set. The force can be in the range of 0.05 N / inch or more and less than 5 N / inch. That is, one can be strongly adhesive and the other can be medium or weakly adhesive. Above all, the adhesive strength of one can be in the range of 5 N / inch or more and 15 N / inch or less, and the adhesive strength of the other can be in the range of 0.1 N / inch or more and 3 N / inch or less.

Further, in the above combination, the first adhesive layer and the second adhesive layer can each have a certain level of adhesive strength or more. Each adhesive layer can be sufficiently adhered to the member, and when the adhesive layer is reattached, peeling easily occurs on the adhesive surface between the first adhesive layer and the second adhesive layer, and the member and the adhesive layer are easily peeled off. This is because it is possible to prevent peeling from occurring on the adhesive surface with. The fact that the first adhesive layer and the second adhesive layer each have a certain level of adhesive strength means that the adhesive strength can be 0.5 N / inch or more, and in particular, 1 N / inch or more. it can.

When at least the first adhesive component among the first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer contains a curable organic compound, a curable inorganic material, or the like, As a combination in which the reworkability is good, the adhesive strength of the first adhesive layer can be stronger than the adhesive strength of the second adhesive layer. At this time, the first adhesive layer can be made strongly adhesive. Further, the first adhesive layer can be strongly adhesive and the second adhesive layer can be medium or weakly adhesive, and in particular, the second adhesive layer is medium or weakly adhesive and It can have a certain level of adhesive strength or higher as described above. When at least the second adhesive component contains a curable organic compound, a curable inorganic material, or the like, the adhesive strength of the first adhesive layer and the second adhesive layer is the opposite.

Good reworkability means that when the first adhesive layer and the second adhesive layer are bonded by their own weight and held for 10 seconds, and then peeled off, the adhesive area of the first adhesive layer before peeling is after peeling. The ratio of the area of the first adhesive layer transferred to the second adhesive layer side (hereinafter referred to as the adhesive layer transfer rate) can be 50% or less, and among them, 40% or less, particularly 30% or less. Can be done. When the adhesive layer migration rate is within the above range, the first adhesive layer can exhibit a desired function when the first adhesive layer and the second adhesive layer are peeled off and then reattached. ..

The reworkability can be measured by the following method. First, a first adhesive sheet (size: 25 mm × 100 mm) provided with separators on both sides of the first adhesive layer is prepared, and one separator of the first adhesive sheet is peeled off to expose the exposed surface of the first adhesive layer. , SUS304 (BA-treated) plate (size: 25 mm × 100 mm), which is attached to one side to form a first test piece. Similarly, a second adhesive sheet (size: 25 mm × 100 mm) provided with separators on both sides of the second adhesive layer is prepared, and one separator of the second adhesive sheet is peeled off to expose the surface of the second adhesive layer. Is attached to one side of another SUS304 (BA-treated) plate (size: 25 mm × 100 mm) to obtain a second test piece. Next, the first test piece is allowed to stand on a horizontal surface so that the first adhesive sheet faces upward, and the other separator of the first adhesive sheet is peeled off to expose the surface of the first adhesive layer. Further, in the second test piece, the other separator of the second adhesive sheet is peeled off to expose the surface of the second adhesive layer, and the exposed surface of the first adhesive layer and the exposed surface of the second adhesive layer are crossed. It is directly overlapped and bonded only by its own weight so that the adhesive area is 25 mm × 25 mm. After holding for 10 seconds, the second test piece was peeled off and moved to the second adhesive layer side after peeling with respect to 100% of the adhesive area of the first adhesive layer before peeling (that is, the contact area with the second adhesive layer). The ratio of the area of the first adhesive layer is calculated.

(C) Combination that improves reactivity The first adhesive layer and the second adhesive layer can be a combination of adhesive forces that increase the reactivity of the curing reaction generated by contact between them. This is because the adhesive force of the cured adhesive layer formed by the contact curing of the first adhesive layer and the second adhesive layer can be strengthened, and the members can be firmly bonded to each other via the cured adhesive layer. Such a combination will be described below.

(I) Combination 1
As a combination of adhesive strengths having good reactivity, one of the first adhesive layer and the second adhesive layer may have a stronger adhesive strength than the other. Since the adhesive layer with strong adhesive strength is a flexible layer and the adhesive layer with weak adhesive strength is a hard layer, the adhesive layer with strong adhesive strength easily adheres to the adhesive layer with weak adhesive strength, and the adhesive strength is high. This is because the components contained in the weak adhesive layer are likely to be transferred to the adhesive layer having strong adhesive strength, so that the reaction due to contact curing is likely to proceed. Further, as described above, the above combination can also improve the reworkability.

Here, the adhesive strength of one is stronger than the adhesive strength of the other. Specifically, the adhesive strength of one is within the range of 5N / inch or more and 50N / inch or less, and the adhesive strength of the other is 0.05N. It can be in the range of / inch or more and less than 5N / inch. That is, one of the first adhesive layer and the second adhesive layer can be strongly adhesive and the other can be medium or weakly adhesive. This is because the strongly adhesive adhesive layer has flexibility, so that it can be reattached before the curing reaction is completed, and it is possible to improve the reworkability in addition to the reactivity. Among them, the adhesive strength of one can be in the range of 5 N / inch or more and 15 N / inch or less, and the adhesive strength of the other can be in the range of 0.1 N / inch or more and 3 N / inch or less.

(Ii) Combination 2
When at least the first adhesive component among the first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer contains a curable organic compound, a curable inorganic material, or the like, As another combination of adhesive strengths that improve the reactivity, the adhesive strength of the first adhesive layer can be stronger than the adhesive strength of the second adhesive layer.

By making the adhesive force of the first adhesive layer stronger than the adhesive force of the second adhesive layer, the first adhesive layer can have more flexibility than the second adhesive layer, and the second adhesive component is the first adhesive. Since it is easy to move to the layer side, the reaction by contact curing is easy to proceed. By improving the reactivity in this way, the shear strength after contact curing can be increased, and the members can be firmly bonded together.

Further, as the above combination, the thickness of the first adhesive layer can be larger than the thickness of the second adhesive layer. This is because the smaller the thickness of the second adhesive layer, the easier it is for the second adhesive component to migrate to the first adhesive layer side, and the reaction due to contact hardening is promoted, so that the reactivity is further improved.

In the above combination, the adhesive strength of the first adhesive layer can be in the range of 5 N / inch or more and 50 N / inch or less, that is, the first adhesive layer can be strongly adhesive.

The present inventor has found that the adhesive strength of the first adhesive layer contributes to the reactivity in the curing reaction due to the contact between the first adhesive layer and the second adhesive layer, as shown in the results of Examples described later. did. That is, since the strongly adhesive first adhesive layer has high flexibility, it is easy to be compatible with each other regardless of the adhesive strength of the other second adhesive layer, and the second adhesive component is easily transferred to the first adhesive layer side. Become. Therefore, the curing reaction easily proceeds, and the adhesive force of the cured adhesive layer formed by contact curing can be strengthened. Above all, since the shear strength after contact curing is high, it is possible to prevent the member from falling due to its own weight when the adhesive surfaces of the adhesive layers are within a predetermined range with respect to the vertical surface or the normal surface. Further, since the strongly adhesive adhesive layer has flexibility, it can be reattached before the curing reaction is completed, and it is possible to improve the reworkability in addition to the reactivity.

When at least the second adhesive component contains a curable organic compound, a curable inorganic material, or the like, the adhesive strength of the first adhesive layer and the second adhesive layer is the opposite.

(Iii) Shear strength The higher the reactivity of the first adhesive layer and the second adhesive layer, the greater the shear strength after the contact curing reaction, that is, the shear strength of the cured adhesive layer. The tensile shear strength of the cured adhesive layer can be increased, particularly 1 MPa or more, and particularly 2 MPa or more. Further, the upper limit of the tensile shear strength is not particularly limited, and can be the same as the upper limit of the tensile shear strength of a general adhesive layer.

The shear strength can be measured by the following method (however, the test speed is 10 mm / min) in accordance with JIS K6850: 1999 (adhesive-tensile shear adhesion test method for rigid adherends). An adhesive sheet having no separator on both sides is measured after a separator (for example, PET separator PET28 × IJ0 manufactured by Nipper Co., Ltd.), which is a release film, is attached. First, a first adhesive sheet, a second adhesive sheet, and two SUS plates (size: length 100 mm × width 25 mm) are prepared. The first adhesive sheet has a layer structure in which separators are provided on both sides of the first adhesive layer. Further, the second adhesive sheet has a layer structure in which separators are provided on both sides of the second adhesive layer. The size of each adhesive sheet is 12.5 mm in length × 25 mm in width. Next, one separator of the first adhesive sheet is peeled off, and the exposed surface of the first adhesive layer is attached to the tip of one side of one SUS plate. The second adhesive sheet is also attached to the tip of one side of the other SUS plate in the same manner. Subsequently, the surface of the first adhesive layer exposed by peeling off the other separator of the first adhesive sheet on the SUS plate and the second adhesive exposed by peeling off the other separator of the second adhesive sheet on the SUS plate. The surface of the layer is directly overlapped and bonded (adhesive area: 12.5 mm × 25 mm) and fixed with a clip, and the sample laminated in the order of SUS plate / first adhesive layer / second adhesive layer / SUS plate is obtained. To make. After the above sample was allowed to stand for 24 hours or 4 days in a 23 ° C. and 50% RH environment for curing, for each curing time, both ends of the above sample were subjected to Tencilon universal material in a 23 ° C. and 50% RH environment. It is fixed to a testing machine (RTF-1350, manufactured by A & D Co., Ltd.) and measured by pulling at 10 mm / min in the direction parallel to the adhesive surface. In each case of curing time of 24 hours and 4 days, the tensile shear strength can be within the above range.

(D) Combination of Good Holding Characteristics The first adhesive layer and the second adhesive layer can be a combination of adhesive forces that increase the holding force when they are bonded so as to be in contact with each other. By increasing the holding force between the upper first adhesive layer and the second adhesive layer, the bonded state is maintained by the adhesive force of both until the contact curing of the first adhesive layer and the second adhesive layer is completed. Because it can be done. Above all, when the adhesive surface between the first adhesive layer and the second adhesive layer is within a predetermined range with respect to the vertical surface or the normal surface, the adhesive surface is peeled off by its own weight until the contact curing is completed. It can be prevented from occurring. The holding force can be improved by adjusting at least one of the adhesive force, the thickness, and the cohesive force.

(I) Combination 1
As a combination having good holding characteristics, at least one of the first adhesive layer and the second adhesive layer has an adhesive strength within the range of 5 N / inch or more and 50 N / inch or less, that is, the first adhesive layer. A combination in which at least one of the layer and the second adhesive layer is strongly adhesive can be used. At this time, the adhesive strength of the other is not particularly limited, but can be weaker than the adhesive strength of one, and among them, the adhesive strength of the other can be medium adhesive or weak adhesive.

When at least the first adhesive component among the first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer contains a curable organic compound, a curable inorganic material, or the like, The first adhesive layer can be a strong adhesive having the above-mentioned adhesive strength. Among them, the first adhesive layer can be made strongly adhesive having the above-mentioned adhesive strength, and the second adhesive layer can be made medium adhesive or weakly adhesive. When at least the second adhesive component contains a curable organic compound, a curable inorganic material, or the like, the adhesive strength of the first adhesive layer and the second adhesive layer is the opposite.

(Ii) Combination 2
As another combination having good retention characteristics, the ratio of the thickness of one adhesive layer to the thickness of the other adhesive layer among the first adhesive layer and the second adhesive layer is 0.5: 1 to 5: 1. The combination may be within the range and the thickness of one adhesive layer is within the range of 2 μm or more and 200 μm or less. In general, the thickness and the strength of the adhesive force are in a proportional relationship. Therefore, by having the above-mentioned magnitude relationship between the two adhesive layers, the thick adhesive layer has a strong adhesive force and becomes a soft layer. Therefore, the stress can be easily dispersed as a whole, and the holding force can be increased.

The thickness of the other adhesive layer is not particularly limited as long as the above ratio can be satisfied, but it can be made smaller than the thickness of one adhesive layer. Above all, the ratio of the thickness of one adhesive layer to the thickness of the other adhesive layer can be in the range of 0.6: 1-3: 1, especially in the range of 0.8: 1 to 2: 1. can do. The thickness of one adhesive layer can be in the range of 5 μm or more and 150 μm or less.

The adhesive layer having one thickness can be strongly adhesive, and the adhesive layer having the other thickness can be medium adhesive or weakly adhesive. The reason has been described in Combination 1 above, and will be omitted here.

If the thickness is too small, the cohesive force may not be able to withstand stress concentration even if the cohesive force is large (the storage elastic modulus is high), and the holding force may decrease. On the other hand, if the thickness is too large, the cohesive force may be reduced. Even when the pressure is low (the storage elastic modulus is low), the adhesive surfaces of the first adhesive layer and the second adhesive layer are likely to be displaced, and the holding force tends to decrease.

When at least the first adhesive component among the first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer contains a curable organic compound, a curable inorganic material, or the like, The ratio of the thickness of the first adhesive layer to the thickness of the second adhesive layer (thickness of the first adhesive layer: thickness of the second adhesive layer) can be in the range of 0.5: 1 to 5: 1. Above all, it can be in the range of 0.6: 1-3: 1, especially in the range of 0.8: 1 to 2: 1. Further, in the above case, the thickness of the first adhesive layer can be in the range of 2 μm or more and 200 μm or less, and in particular, in the range of 5 μm or more and 150 μm or less. In order to obtain a certain degree of adhesive strength by contact curing of the two adhesive layers, it is necessary that the first adhesive component contained in the first adhesive layer is transferred to the second adhesive layer side. Therefore, by setting the thickness of the first adhesive layer to the above-mentioned thickness, the components can be easily transferred, and the strong adhesiveness can be obtained, so that the above-mentioned effect can be easily obtained. When at least the second adhesive component contains a curable organic compound, a curable inorganic material, or the like, the thicknesses of the first adhesive layer and the second adhesive layer are vice versa.

(Iii) Combination 3
As another combination in which the holding characteristics are good, at least one of the first adhesive layer and the second adhesive layer may have a predetermined cohesive force. That is, the storage elastic modulus of at least one of the first adhesive layer and the second adhesive layer at 20 ° C. can be within the range ^{of 1.0 × 10 5} Pa or more and 1.0 × 10 ^{6 Pa or less.} Specifically, the storage elastic modulus can be 1.0 × 10 ⁵ Pa or more, particularly 2.0 × 10 ⁵ Pa or more, and 1.0 × 10 ⁶ Pa or less, especially 5.0. × 10 ^{It can be 6} Pa or less.

The storage elastic modulus is defined as a component of energy generated in an object due to external force and strain that is stored inside the object, and is an index of the hardness of the adhesive force before curing. The storage elastic modulus can be measured by a dynamic viscoelasticity measuring method based on JIS K7244-1. The specific measuring device and measuring conditions can be the same as those used for measuring the storage elastic modulus E'in the method for calculating the loss tangent (tan δ) that defines the viscosity described above.

Here, the adhesive layer has adhesiveness according to the storage elastic modulus, and when the adhesive force is weakened, the value of the storage elastic modulus becomes high and the cohesive force also becomes high. The holding property is generally considered to be due to the relationship of the adhesive force between the two adhesive layers. That is, if one of the first adhesive layer and the second adhesive layer is a strongly adhesive adhesive layer, the strongly adhesive adhesive layer has low cohesive force and flexibility, but is overall due to the strong adhesive force. Since the stress is easily dispersed, it is possible to have high holding characteristics.

Further, as shown in the results of Examples described later, even if both the first adhesive layer and the second adhesive layer are weakly adhesive, when the storage elastic modulus of one of the adhesive layers is within a predetermined range, It was suggested that it would be possible to improve the holding characteristics. From these results, the combination of weakly adhesive adhesive layers has a high cohesive force of each adhesive layer and is hard, but since it has a predetermined storage elastic modulus, stress is not concentrated on either one and the force is received as a whole. It is presumed that the yield strength in the shearing direction can be increased, and as a result, the holding characteristics are improved.

The dynamic viscoelasticity of the other adhesive layer may be higher or lower than the dynamic viscoelasticity of one adhesive layer, and can be appropriately set according to the adhesive strength and thickness of one adhesive layer. Above all, the storage elastic modulus of each of the first adhesive layer and the second adhesive layer at 20 ° C. can be within the above-mentioned predetermined range. This is because when both adhesive layers have a storage elastic modulus within a predetermined range, it is possible to have a higher holding property than when only one adhesive layer has a storage elastic modulus within a predetermined range. ..

When at least the first adhesive component among the first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer contains a curable organic compound, a curable inorganic material, or the like, At least the second adhesive layer can have the above-mentioned storage elasticity. Above all, the second adhesive layer has the above-mentioned storage elastic modulus and can be made weakly adhesive. When at least the second adhesive component contains a curable organic compound, a curable inorganic material, or the like, the relationship between the first adhesive layer and the second adhesive layer is the opposite.

(Iv) Others At least one of the first adhesive layer and the second adhesive layer can have at least one of a predetermined adhesive force, thickness and cohesive force, and the other can have a predetermined storage elastic modulus. Specifically, among the first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer, at least the first adhesive component is a curable organic compound, a curable inorganic material, or the like. The first adhesive layer can have at least one of the above-mentioned predetermined adhesive strength and thickness, and the second adhesive layer can have the above-mentioned predetermined storage elasticity. When at least the second adhesive component contains a curable organic compound, a curable inorganic material, or the like, the relationship between the first adhesive layer and the second adhesive layer is the opposite.

(V) Holding force The holding force between the first adhesive layer and the second adhesive layer can be set to 8 seconds or more by a method based on JIS Z0237: 2009 (adhesive tape / adhesive sheet test method), particularly 10 seconds or more. In particular, it can be 12 seconds or longer.

The holding force here can be measured by the following method in accordance with JIS Z0237: 2009 (adhesive tape / adhesive sheet test method). An adhesive sheet having no separator on both sides is measured after a separator (for example, PET separator PET28 × IJ0 manufactured by Nipper Co., Ltd.), which is a release film, is attached. First, a first adhesive sheet (size: length 12 mm × width 12 mm) provided with separators on both sides of the first adhesive layer is prepared, and one separator of the first adhesive sheet is peeled off to expose the first adhesive layer. Is attached to the center of the tip of one side of a SUS plate (size: length 125 mm x width 50 mm). Next, a second adhesive sheet (size: length 12 mm × width 12 mm) provided with separators on both sides of the second adhesive layer was prepared, and one of the separators of the second adhesive sheet was peeled off to expose the second adhesive layer. And the surface of the first adhesive layer exposed by peeling off the other separator of the first adhesive sheet on the SUS plate are directly overlapped and bonded (bonding area: 12 mm × 12 mm). Subsequently, the tip of the PET sheet (size: length 150 mm × width 12 mm) is attached to the entire surface of the exposed second adhesive layer by peeling off the other separator of the second adhesive sheet. A weight when the SUS plate is fixed so that the longitudinal direction of the SUS plate is in the vertical direction, and a weight of 1 kg is hung from the lower end of the PET sheet protruding downward from the SUS plate in an environment of 23 ° C. and 50 RH%. Measure the time it takes to fall.

(E) Others The combination of the adhesive strengths of the first adhesive layer and the second adhesive layer can be appropriately selected from the above-mentioned combinations according to the functions required between the two adhesive layers. Among them, among the first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer, at least the first adhesive component contains a curable organic compound, a curable inorganic material, and the like. In the case, the combination in which the first adhesive layer further contains the first phase-soluble polymer component and is strongly adhesive, and the second adhesive layer further contains the second phase-soluble polymer component and is weakly adhesive. However, the reactivity, reworkability, and retention characteristics are good. When at least the second adhesive component contains a curable organic compound, a curable inorganic material, or the like, the relationship between the first adhesive layer and the second adhesive layer is the opposite.

(3) Material The first adhesive layer and the second adhesive layer can be cured and adhered by coming into contact with each other. The first adhesive layer and the second adhesive layer having such properties are the first adhesive among the first adhesive component and the second adhesive component that can be cured and adhered by contacting each other. The adhesive layer containing the agent component can be used as the first adhesive layer, and the adhesive layer containing the second adhesive component can be used as the second adhesive layer.

Here, the adhesive component means a component that contributes to the curing reaction. Examples thereof include curable organic compounds, curable inorganic materials, curing agents, catalysts, initiators, curing accelerators, reducing agents, acid or alkaline components, acid generators, base generators, water absorbents and the like.

The first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer start a curing reaction by contact, and the curing reaction proceeds as each component diffuses with each other. , A substantially uniform curing is possible.

The combination of the first adhesive component and the second adhesive component is not particularly limited, but for example, a combination in which a curable organic compound is used as the first adhesive component and a curing agent is used as the second adhesive component, and a curable organic compound. And a combination of the latent curing agent as the first adhesive component and the catalyst and the reducing agent as the second adhesive component, the curable organic compound and the initiator as the first adhesive component, and the reducing agent as the second adhesive component. The combination of the above, the curable organic compound and the initiator as the first adhesive component, the curable organic compound and the reducing agent as the second adhesive component, the curable inorganic material as the first adhesive component, moisture and Examples thereof include a combination in which a catalyst is used as a second adhesive component, a combination in which a curable organic compound and a ph reaction-imparting component are used as a first adhesive component, and an acid or alkali component is used as a second adhesive component. Further, the combination of the first adhesive component and the second adhesive component may be the reverse of these.

The first adhesive layer and the second adhesive layer are two-component separate coating type adhesives composed of, for example, a liquid material containing a first adhesive component and a liquid material containing a second adhesive component. It can be formed using each liquid material of the agent. Examples of the two-component separate coating type adhesive include conventionally known compositions. Specifically, a primer-type acrylic adhesive (SGA) composed of a liquid A containing an acrylic compound and a radical polymerization initiator and a liquid B containing a reducing agent of a redox polymerization catalyst, an acrylic compound, and a radical. Liquid A containing a polymerization initiator, liquid B containing an acrylic compound and a reducing agent for a redox polymerization catalyst, and liquid A containing a two-component main agent type acrylic adhesive (SGA) and a polyol compound. , Epoxy adhesive composed of liquid B containing a polyisocyanate compound, liquid A containing a urethane adhesive and an epoxy compound, and liquid B containing a curing agent such as polyamide, polythiol, and imidazole. Examples thereof include a silicone adhesive composed of a liquid A containing a silicone compound such as an agent and a silicone low polymer, and a liquid B containing a platinum catalyst. The two-component separate coating type adhesive is not limited to these, and can be appropriately selected depending on the material of the member and the like. Further, not only the two-component separate coating type adhesive but also a two-component curable paint such as polymer cement can be used.

Hereinafter, the materials of the first adhesive layer and the second adhesive layer will be described.

(A) First Adhesive Component and Second Adhesive Component At least one of the first adhesive component and the second adhesive component contains a curable organic compound, a curable inorganic material, or the like. Hereinafter, a case where at least the first adhesive component contains a curable organic compound, a curable inorganic material, or the like will be described.

(I) First Adhesive Component The first adhesive component contained in the first adhesive layer may cause a curing reaction with the second adhesive component contained in the second adhesive layer, and may be a second adhesive. Due to the presence of the components, the components contained in the first adhesive component may cause a curing reaction. When a two-component separate coating type adhesive is used for the first adhesive layer and the second adhesive layer, the first adhesive component usually contains at least the main component component in the two-component separate coating type adhesive.

Examples of the first adhesive component include curable organic compounds, curable inorganic materials, and other materials used in combination with these. The first adhesive component may contain either a curable organic compound or a curable inorganic material, or may contain both.

(Curable organic compound)
Examples of the curable organic compound include curable organic compounds used in known two-component separate coating adhesives, such as epoxy compounds, acrylic compounds, polyol compounds, silicone compounds such as silicone low polymers, and melamine compounds. Examples thereof include a phenol compound mixture and a silyl compound. These can be appropriately selected depending on the material of the member to which the first adhesive layer is bonded. For example, if the material of the member is wood, ceramic, concrete, or metal, the curable organic compound can be an epoxy compound or a polyol compound. Further, for example, if the material of the member is a difficult-to-adhere material such as polypropylene or polyethylene, the curable organic compound can be a silicone compound or an acrylic compound. In addition, the acrylic compound has a high degree of freedom in material, and can be widely used for organic substances such as metals, wood, and ABS.

When the first adhesive component contains an epoxy compound, the epoxy compound can have two or more epoxy groups in one molecule, and an epoxy compound generally used for an epoxy adhesive can be used. For example, an epoxy compound having a bisphenyl group such as a bisphenol A type epoxy compound or a bisphenol F type epoxy compound, a naphthalene type epoxy compound, an aliphatic epoxy compound, a glycol type epoxy compound, a pentaerythritol type epoxy compound, an aromatic epoxy compound. , Modified epoxy compounds such as urethane-modified epoxy compounds and rubber-modified epoxy compounds, and other epoxy compounds disclosed in JP-A-2009-167251. These epoxy compounds may be used alone or in combination of two or more.

The epoxy compound contained in the first adhesive component may be a liquid epoxy compound or a solid epoxy compound. The liquid epoxy compound refers to an epoxy compound that is liquid at room temperature, and the solid epoxy compound refers to an epoxy compound that is solid at room temperature. For example, in the case of a bisphenol A type epoxy compound, if the bisphenol skeleton of the main chain is 1 or more and 3 or less, it can be liquid at room temperature, and if the bisphenol skeleton of the main chain is 2 or more and 10 or less, at room temperature. It can be solid.

The first adhesive layer may contain at least one of a liquid epoxy compound and a solid epoxy compound, but may contain both. When the first adhesive layer contains a liquid epoxy compound and a solid epoxy compound, the adhesive strength before curing and the adhesive strength after curing can be adjusted by adjusting the respective molecular weights and blending amounts.

The mass average molecular weight and epoxy equivalent of the liquid epoxy compound can be appropriately set according to the curing rate required for contact between the first adhesive layer and the second adhesive layer. For example, the mass average molecular weight (Mw) of the liquid epoxy compound can be in the range of 200 or more and 900 or less. At this time, the epoxy equivalent (g / eq.) Can be in the range of 100 or more and 500 or less. Within the above range, when the first adhesive layer and the second adhesive layer are brought into contact with each other, the liquid epoxy compound contained in the first adhesive layer easily permeates into the other second adhesive layer side and is cured. You can speed up. In addition, durability and adhesive strength after curing can be improved.

Further, the mass average molecular weight and the epoxy equivalent of the solid epoxy compound can be appropriately set according to the magnitude of the shear stress applied to the first adhesive layer and the direction in which the stress is applied. For example, the mass average molecular weight (Mw) of the solid epoxy compound can be in the range of 900 or more and 6000 or less. Within the above range, durability and adhesive strength can be improved. At this time, the epoxy equivalent (g / eq.) Can be in the range of 450 or more and 5000 or less. This is because, within the above range, the cohesive force and the film-forming property are improved, and the shear stress is strengthened. In addition, durability and adhesive strength after curing can be improved.

The mass average molecular weight is a polystyrene-equivalent value measured by gel permeation chromatography (GPC). The epoxy equivalent is the number of grams of the compound containing 1 gram equivalent of the epoxy group measured by a method according to JIS K7236: 2009 (How to determine the epoxy equivalent of the epoxy compound).

When the first adhesive layer contains both a liquid epoxy compound and a solid epoxy compound as the epoxy compound, the blending ratio of the liquid epoxy compound and the solid epoxy compound can be set according to the required adhesiveness and cohesive force. In order to obtain a first adhesive layer having strong adhesiveness or low cohesive force, the content of the liquid epoxy compound is relative to the total amount (100% by mass) of the liquid epoxy compound and the solid epoxy compound in the first adhesive layer. Can be 50% by mass or more, particularly 60% by mass or more, and 95% by mass or less, particularly 90% by mass or less. The content of the liquid epoxy compound can be higher than the content of the solid epoxy compound. On the other hand, in order to form the first adhesive layer having weak adhesiveness or high cohesive force, the liquid epoxy compound is added to the total amount (100% by mass) of the liquid epoxy compound and the solid epoxy compound in the first adhesive layer. The content can be 20% by mass or more, particularly 30% by mass or more, and 70% by mass or less, particularly 60% by mass or less. The content of the liquid epoxy compound in the first adhesive layer can be equal to or less than the content of the solid epoxy compound.

When the first adhesive component contains an acrylic compound, the acrylic compound may be either an acrylic monomer or an acrylic polymer. Moreover, the acrylic polymer may be either an acrylic low polymer or an acrylic high polymer. For example, the acrylic compounds disclosed in JP-A-2008-248111 and JP-A-2016-175195 can be mentioned.

When the first adhesive component contains a polyol compound, the polyol compound may have a plurality of hydroxyl groups in the molecule, and examples thereof include polyester polyols, acrylic polyols, and polyether polyols.

When the first adhesive component contains a melamine compound, a mixture of phenol compounds, or a silyl compound, these compounds can be the same as the compounds used in a general two-component separate coating type adhesive.

Among them, the first adhesive component may contain an epoxy compound. This is because the cohesive force and adhesive force after curing are high, and it is possible to adhere to a wide range of materials such as wood, concrete, and ceramic with high strength.

Further, the first adhesive component may contain an acrylic compound. For example, by appropriately selecting an acrylic compound, the physical characteristics of the first adhesive layer can be adjusted according to the member, and the suitability for the member can be enhanced. Further, the acrylic compound has an advantage that it has good weather resistance and transparency.

(Curable inorganic material)
As the curable inorganic material, for example, a water-curable inorganic material that cures using water as a catalyst can be used. Specific examples of the water-curable inorganic material include cements such as Portland cement, alumina cement, acid-resistant cement, slag cement, Roman cement and magnesia cement, gypsum, lime and magnesium carbonate.

(Other ingredients)
The first adhesive component may contain, for example, a curing agent, a catalyst, an initiator, a curing accelerator, a reducing agent, etc., in addition to a curable organic compound, a curable inorganic material, and the like. These materials can usually be different from the second adhesive component contained in the paired second adhesive layer, and can be used for curable organic compounds, types of curable inorganic materials, and the second adhesive layer. It can be appropriately selected depending on the type of the second adhesive component contained.

For example, when the first adhesive layer contains a curable organic compound as the first adhesive component and the curable organic compound is an acrylic compound, the first adhesive component may be, for example, in addition to the acrylic compound. A radical polymerization initiator can be included. In this case, the paired second adhesive layer may contain, for example, a reducing agent of the redox polymerization catalyst, or an acrylic compound and a reducing agent of the redox polymerization catalyst as the second adhesive component. Specific examples thereof include radical polymerization initiators such as peroxides and azo compounds disclosed in JP-A-2008-308531.

Further, for example, when the first adhesive layer contains a curable organic compound as the first adhesive component and the curable organic compound is an epoxy compound, the first adhesive component may be other than the epoxy compound. Curing agents such as phenol compounds, amine compounds and thiol compounds generally blended in epoxy compounds, latent curing agents such as dicyandiamide, microcapsule type amines and inclusion catalysts and hydrazides, and curing agents such as cationic catalyst type curing agents. Can be included. In this case, the paired second adhesive layer may contain, for example, a curing catalyst such as an aliphatic dimethylurea or an aromatic dimethylurea, an imidazole, a phosphorus-based catalyst, or polyamines as the second adhesive component.

(Ii) Second Adhesive Component The second adhesive component contained in the second adhesive layer may directly react with the first adhesive component contained in the first adhesive layer, and the first adhesive layer may be used. It may be one that induces or promotes the curing reaction of the first adhesive component contained in. The second adhesive component can be appropriately selected depending on the type of the first adhesive component. For example, a curing agent, an acid or alkali component, a curing accelerator, an acid generator, a base generator, a catalyst, and water absorption. Agents and the like can be mentioned. These components may be one kind or two or more kinds. The second adhesive component usually has a different composition from the first adhesive component.

Examples of the second adhesive component when the first adhesive component contains an epoxy compound include a curing agent. Specific examples of the curing agent include imidazole compounds, phenol compounds, amine compounds, polyamide compounds, acid anhydrides, isocyanate compounds, and thiol compounds. Above all, the curing agent can be an imidazole compound. The imidazole compound has good reactivity with the epoxy compound at room temperature, has a high glass transition temperature (Tg) after curing, is excellent in heat resistance and durability, and has many compounds having a small molecular weight. Therefore, when the first adhesive layer and the second adhesive layer are brought into contact with each other, the curing agent contained in the second adhesive layer is likely to be transferred to the other first adhesive layer containing the epoxy compound, which is caused by the contact. This is because the curing reaction is likely to occur.

Examples of the second adhesive component when the first adhesive component contains an acrylic compound include a catalyst, a reducing agent, an initiator and the like. Specific examples thereof include radical polymerization initiators such as peroxides and azo compounds disclosed in JP-A-2008-308531, and redox polymerization catalyst reducing agents disclosed in JP-A-2008-81691.

When the first adhesive component contains an acrylic compound, the second adhesive component may also contain an acrylic compound. In this case, the acrylic compounds contained in the first adhesive component and the second adhesive component may be the same or different. When the acrylic compounds contained in the first adhesive component and the second adhesive component are different, for example, the physical properties of the first adhesive layer and the second adhesive layer are adjusted according to the member by appropriately selecting the acrylic compound. Therefore, the suitability for the member can be enhanced. When the acrylic compounds contained in the first adhesive component and the second adhesive component are different, the acrylic compound should be appropriately selected according to the functions required for the first adhesive layer and the second adhesive layer, respectively. Can be done. For example, when the first adhesive layer and the second adhesive layer are laminated on the first member as described in the fourth embodiment and the fifth embodiment of the method for manufacturing an article described later, the first member on the first member side. The adhesive layer is required to have adhesive performance, and the second adhesive layer arranged on the outermost surface is required to have a protective function. In this case, the hard coat property can be imparted to the second adhesive layer by appropriately selecting an acrylic compound so that the second adhesive layer arranged on the outermost surface becomes harder after curing.

Examples of the second adhesive component when the first adhesive component contains a polyol compound include a curing agent. Specific examples thereof include polyisocyanate compounds, and among them, aromatic polyisocyanates such as MDI, crude MDI, and TDI can be used because they are excellent in reactivity with polyol compounds.

Examples of the second adhesive component when the first adhesive component contains a silicone compound include a platinum catalyst.

Examples of the second adhesive component when the first adhesive component contains a melamine compound or a mixture of phenol compounds include an acid or alkaline component such as a hydrogel containing a sulfuric acid aqueous solution and a hydrogel containing sodium hydroxide.

Examples of the second adhesive component when the first adhesive component contains a silyl compound or a curable inorganic material include a solid liquid dispersion colloid. Specific examples thereof include hydrogels, water-absorbent polymers, gelatin and the like. The above-mentioned second adhesive component can be cured by the moisture contained therein.

The content of the second adhesive component can be an amount capable of sufficiently reacting with the first adhesive component when the first adhesive layer and the second adhesive layer come into contact with each other. It can be appropriately set according to the combination and type of the adhesive component and the second adhesive component. For example, when the first adhesive component contains an epoxy compound and the second adhesive component contains an imidazole compound as a curing agent, the content of the imidazole compound in the second adhesive layer is the epoxy equivalent of the epoxy compound. However, for example, the epoxy compound may be in the range of 0.1 parts by mass or more and 30 parts by mass or less, particularly in the range of 1 part by mass or more and 20 parts by mass or less with respect to 100 parts by mass of the epoxy compound. This is because if the content of the imidazole compound in the second adhesive layer is too large, the adhesion to the member may be weakened, while if the content is too small, it may cause curing failure. .. When the curable organic compound contained in the first adhesive component is a material other than the epoxy compound, the content of the second adhesive component is two liquids when a general-purpose two-component curable adhesive is used. There is no particular problem as long as it does not deviate significantly from the general distribution during curing.

The case where at least the first adhesive component contains a curable organic compound, a curable inorganic material, or the like has been described above, but at least when the second adhesive component contains a curable organic compound, a curable inorganic material, or the like. Can be the other way around.

(B) First Phase-Soluble Polymer Component The first adhesive layer can further contain a first phase-soluble polymer component having compatibility with the first adhesive component. The reason is as follows.

The two-component separate coating type adhesive is usually used by applying two types of liquid materials to each other and then immediately contact-curing each other. However, since each liquid material is inferior in film forming property, each sheet has a desired thickness. There is a problem that it is difficult to maintain the sheet shape for a long period of time when trying to separate and store the sheet. On the other hand, by containing a compatible polymer component having compatibility with the components of each liquid material, the film-forming property can be improved and the sheet shape can be maintained for a long period of time. Further, in each of the adhesive layers formed by separately applying the above two types of liquid materials, the components of the liquid materials function as a plasticizing agent, so that the adhesive layer containing the components of each liquid material is further compatible with the polymer. By adding the component, the entire adhesive layer is plasticized, and the adhesiveness and flexibility of the compatible polymer component are exhibited. This makes it possible to improve the adhesiveness before curing and the adhesiveness to the member, and also improve the toughness of the adhesive layer after curing and further enhance the adhesive force.

Here, having compatibility with the first adhesive component means that the first adhesive component has a good affinity with the curable organic compound, and is in an arbitrary ratio with the first adhesive component. When mixed, it means that phase separation does not occur. In the first adhesive layer, the fact that the first phase-soluble polymer component is compatible with the first adhesive component means that, for example, the transparency of the first adhesive layer is high and the haze value of the first adhesive layer is high. When the surface or cross section of the first adhesive layer is observed with a scanning electron microscope (SEM) or a transmission electron microscope (TEM), micron-sized islands are not generated in the layer. You can check. The same applies to the second adhesive layer described later.

In particular, when the first adhesive layer or the second adhesive layer contains a curable organic compound of any of an epoxy compound, an acrylic compound, and a polyol compound as the first adhesive component or the second adhesive component, the first The effect of the compatible polymer component can be more exerted. For example, when the curable organic compound is an acrylic compound, the crosslink density tends to be high. However, by including the first phase-soluble polymer component, the main chain of the acrylic compound is lengthened, that is, the crosslink density is lowered. This makes it possible to impart flexibility to the first adhesive layer. When the curable organic compound is an epoxy compound, the manifestation of the effect by the phase 1 soluble polymer component will be described later.

Further, the first phase-compatible polymer component can have compatibility with the second adhesive component contained in the second adhesive layer. Having compatibility with the second adhesive component means that the affinity with the second adhesive component is good, the first adhesive layer and the second adhesive layer come into contact with each other, and the second adhesive component is optional. It means that the phase does not separate when mixed at the ratio of.

The first phase-soluble polymer component is not particularly limited as long as it contains a polymer having good compatibility with the first adhesive component. The polymer may have a polar group. Examples of the polar group include an epoxy group, a hydroxyl group, a carboxyl group, a nitrile group, an amide group and the like.

Above all, the first phase-soluble polymer component can be a component containing an acrylic polymer, that is, a compatible acrylic polymer-containing component.

The compatible acrylic polymer-containing component may be a homopolymer in which the acrylic polymer is a homopolymer of an acrylic acid ester monomer and may be a mixed component containing two or more of the homopolymers. It is a copolymer composed of two or more kinds of acrylic acid ester monomers, and may be a component containing one or more copolymers. Further, the compatible acrylic polymer-containing component may be a mixed component of the homopolymer and the copolymer. The "acrylic acid" of the acrylic acid ester monomer also includes the concept of methacrylic acid. Specifically, the compatible acrylic polymer-containing component may be a mixture of a methacrylate polymer and an acrylate polymer, and has an acrylic acid ester weight such as acrylate-acrylate, methacrylate-methacrylate, and methacrylate-acrylate. It may be coalesced. Among them, the above-mentioned acrylic polymer-containing component can contain a copolymer of two or more kinds of acrylic acid ester monomers ((meth) acrylic acid ester copolymer).

Examples of the monomer component constituting the (meth) acrylic acid ester copolymer include the monomer component described in JP-A-2014-065889. The above-mentioned monomer component may have the above-mentioned polar group. This is because the compatibility with the epoxy compound is improved, and the adhesive strength and the adhesive strength after curing can be enhanced. Examples of the (meth) acrylic acid ester copolymer include ethyl acrylate-butyl acrylate-acrylonitrile copolymer, ethyl acrylate-acrylonitrile copolymer, and butyl acrylate-acrylonitrile copolymer. The "acrylic acid" such as methyl acrylate and ethyl acrylate includes "methacrylic acid" such as methyl methacrylate and ethyl methacrylate.

Examples of the (meth) acrylic acid ester copolymer include block copolymers, and acrylic block copolymers such as methacrylate-acrylate copolymers. The acrylates and methacrylates constituting the acrylic block copolymer include, for example, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, lauryl acrylate, 2-ethylhexyl acrylate, cyclohexyl acrylate, benzidyl acrylate and the like. Can be mentioned. These "acrylic acids" also include methacrylic acid.

Specific examples of the methacrylate-acrylate copolymer include acrylic copolymers such as a methyl methacrylate-butyl acrylate-methyl methacrylate (MMA-BA-MMA) copolymer. MMA-BA-MMA copolymers also include block copolymers of polymethylmethacrylate-polybutylacrylate-polymethylmethacrylate (PMMA-BA-MMA). Such an acrylic copolymer has improved film-forming properties and can exhibit sufficient adhesiveness to the adherend surface.

The acrylic polymer may not have a polar group, or may be a modified product in which the above-mentioned polar group is partially introduced. Since the modified product has further improved compatibility with the epoxy compound, the adhesive strength is further improved.

Among them, the first phase-soluble polymer component has a first polymer portion having a glass transition temperature (Tg) of 10 ° C. or lower and a second polymer portion having a glass transition temperature (Tg) of 20 ° C. or higher. It can be a (meth) acrylic acid ester copolymer. Such a (meth) acrylic acid ester copolymer has a first polymer portion that becomes a soft segment and a second polymer portion that becomes a hard segment. By adding such a copolymer, the first adhesive layer can effectively suppress floating and peeling from the adherend surface, and the toughness after curing is improved to further enhance the adhesive force. Because it can be done.

The expression of the above effects can be estimated as follows. In conventional adhesives, an acrylic polymer has been added in addition to a curable organic compound as a main agent, for example, an epoxy compound, in order to impart toughness and flexibility. The addition reduced the heat resistance of the adhesive itself. On the other hand, by using an acrylic polymer having both a soft segment and a hard segment, such as the above (meth) acrylic acid ester copolymer, the hard segment contributes to heat resistance, and the soft segment is tough or flexible. In order to contribute to the properties, it is considered that the first adhesive layer after curing has toughness and can maintain excellent adhesiveness.

At least one of the first polymer portion and the second polymer portion contained in the (meth) acrylic acid ester copolymer has compatibility with the curable organic compound. When the first polymer portion has compatibility with the curable organic compound, the flexibility can be increased. Further, when the second polymer portion has compatibility with the curable organic compound, cohesiveness and toughness can be enhanced.

When either the first polymer moiety or the second polymer moiety is not compatible with the curable organic compound, the (meth) acrylic acid ester copolymer is compatible with the curable organic compound. It will have a compatible moiety, which is a polymer moiety, and an incompatible moiety, which is a polymer moiety that is not compatible with the curable organic compound. In this case, when the above (meth) acrylic acid ester copolymer is added as an acrylic polymer to the adhesive composition containing the curable organic compound, the compatible moiety is compatible with the curable organic compound and the incompatible moiety is present. Is incompatible with the curable organic compound, resulting in phase separation. As a result, a sea-island structure is developed in the first adhesive layer after curing. The sea-island structure includes the type of (meth) acrylic acid ester copolymer, compatibility of the first polymer portion and the second polymer portion contained in the (meth) acrylic acid ester copolymer, and modification by introduction of a polar group. Depending on the presence or absence, for example, the compatible site of the cured product of the curable organic compound and the (meth) acrylic acid ester copolymer is the sea, and the non-compatible site of the (meth) acrylic acid ester copolymer is an island. Sea-island structure or sea-island structure in which the incompatible part of the (meth) acrylic acid ester copolymer is the sea, and the compatible part of the cured product of the curable organic compound and the (meth) acrylic acid ester copolymer is an island. , A sea-island structure in which the (meth) acrylic acid ester copolymer is the sea and the cured product of the curable organic compound is the island. By having such a sea-island structure, the first adhesive layer after curing can easily disperse stress, so that interfacial fracture can be avoided and excellent adhesiveness can be maintained.

The (meth) acrylic acid ester copolymer can be a block copolymer among them, and in particular, ABA in which the compatible site is the polymer block A and the incompatible site is the polymer block B. It can be a block copolymer. Further, A in which the first polymer portion is an incompatible moiety and the second polymer moiety is a compatible moiety, the first polymer portion is the polymer block B, and the second polymer portion is the polymer block A. It can be a −BA block copolymer. By using such an ABA block copolymer as the acrylic polymer, the cured product of the curable organic compound and the phase of the (meth) acrylic acid ester copolymer are contained in the first adhesive layer after curing. In the case of a sea-island structure in which the melting site is the sea and the incompatible site of the (meth) acrylic acid ester copolymer is an island, the island portion can be made smaller. Further, in the case of a sea-island structure in which the incompatible portion of the (meth) acrylic acid ester copolymer is the sea, and the compatible portion of the cured product of the curable organic compound and the (meth) acrylic acid ester copolymer is an island. Alternatively, in the case of a sea-island structure in which the (meth) acrylic acid ester copolymer is the sea and the cured product of the curable organic compound is an island, the sea portion can be made smaller. Therefore, in the adhesive layer after curing, the curable organic compound and the acrylic polymer are apparently in a compatible state. By expressing such an apparent compatible state, the first adhesive layer after curing can further easily disperse stress, so that interfacial fracture can be avoided and excellent adhesiveness can be obtained. Can be maintained.

Further, the (meth) acrylic acid ester copolymer may be a modified product in which the above-mentioned polar group is introduced into a part of the first polymer portion or the second polymer portion. The heat resistance of the first adhesive layer after curing is further improved, and the compatibility with the curable organic compound is also improved, so that the adhesiveness is improved.

The Tg of the first polymer portion contained in the (meth) acrylic acid ester copolymer is 10 ° C. or lower, within the range of −150 ° C. or higher and 10 ° C. or lower, and particularly within the range of −130 ° C. or higher and 0 ° C. or lower. In particular, it can be in the range of −110 ° C. or higher and −10 ° C. or lower.

The Tg of the first polymer portion is calculated by the following formula based on the Tg (K) of each homopolymer described in "POLYMERHANDBOOK 3rd Edition" (published by John Wiley & Sons, Ink.). Can be sought.
1 / Tg (K) = W ₁ / Tg ₁ + W ₂ / Tg ₂ + ... + W _n / Tg _n
W _n ; Mass fraction Tg _{n of} each monomer; Tg (K) of homopolymer of each monomer, Polymer Handbook (3rd Ed., J. Brandrup and E.H. Immunogut, WILEY INTERSCIENCE). You can use the published value that is open to the public, such as the value inside. The same applies to the Tg of the second polymer portion described later.

The first polymer portion contained in the (meth) acrylic acid ester copolymer may be a homopolymer or a copolymer, and among them, a homopolymer can be used. The monomer component and the polymer component constituting the first polymer portion may be a monomer component and a polymer component capable of obtaining the first polymer portion having a Tg in a predetermined range, and may be, for example, acrylic. Acrylic acid ester monomers such as butyl acid acid, 2-ethylhexyl acrylate, isononyl acrylate, and methyl acrylate, other monomers such as vinyl acetate, acetal, and urethane, and polar group-containing singles containing the above-mentioned polar groups. Examples thereof include monomers and copolymers such as EVA.

The Tg of the second polymer portion contained in the (meth) acrylic acid ester copolymer is 20 ° C. or higher and is in the range of 20 ° C. or higher and 150 ° C. or lower, particularly in the range of 30 ° C. or higher and 150 ° C. or lower, particularly. It can be in the range of 40 ° C. or higher and 150 ° C. or lower.

Further, the second polymer portion contained in the (meth) acrylic acid ester copolymer may be a homopolymer or a copolymer, but among them, a homopolymer can be used. .. The monomer component constituting the second polymer portion may be any monomer component capable of obtaining the second polymer portion in which Tg is in a predetermined range, and is, for example, an acrylic acid ester simple such as methyl methacrylate. Polymers, other monomers such as acrylamide, styrene, vinyl chloride, amide, acrylonitrile, cellulose acetate, phenol, urethane, vinylidene chloride, methylene chloride, and methacrylonitrile, polar group-containing monomers including the above-mentioned polar groups The body is mentioned.
The "acrylic acid" of the acrylic acid ester monomer also includes methacrylic acid.

Specific examples of the (meth) acrylic acid ester copolymer having the first polymer portion and the second polymer portion include the above-mentioned MMA-BA-MMA copolymer and the like.

The mass average molecular weight of the first phase-soluble polymer component can be appropriately set according to the adhesiveness and cohesive force required for the first adhesive layer, but is higher than the mass average molecular weight of the first adhesive component. Can be made larger. This is because it is necessary to leave the film-forming property to the first phase-soluble polymer component and the first adhesive component to act as a plastic component. Further, the first phase-soluble polymer component can be compatible with the second adhesive component contained in the second adhesive layer. Specifically, the mass average molecular weight of the first phase-soluble polymer component can be in the range of 10,000 or more and 900,000 or less, and in particular, can be in the range of 30,000 or more and 500,000 or less. If the mass average molecular weight of the first phase-compatible polymer component is too small, three-dimensional cross-linking becomes dominant and the toughness may decrease, while if it is too large, the compatibility deteriorates and the strength decreases. The mass average molecular weight of the first phase-soluble polymer component can be measured by GPC (eluent: THF, standard substance: PS, sample: 20 μL, flow rate: 1 mL / min, column temperature: 40 ° C.).

The content of the first phase-soluble polymer component in the first adhesive layer is appropriately adjusted according to the type of the first phase-soluble polymer component, the adhesiveness, cohesiveness, viscosity, etc. required for the first adhesive layer. It is possible. For example, when the first adhesive component contains a curable organic compound such as an acrylic compound or an epoxy compound, and the first phase-soluble polymer component contains the above (meth) acrylic acid ester copolymer, the curable organic compound 100 The content of the (meth) acrylic acid ester copolymer can be in the range of 4 parts by mass or more and 100 parts by mass or less with respect to parts by mass. When both are mixed at this ratio, the first adhesive layer develops a structure in which the acrylic polymer is dispersed in the curable organic compound in the form of fine particles at the nano-order level before the contact curing, and the apparent phase. The dissolved state is expressed. Then, the first adhesive layer can exhibit excellent adhesive strength by being cured while maintaining an apparent compatible state by contact with the second adhesive layer. Further, since the first adhesive layer after curing has the above structure, it is possible to suppress the intrusion of water from the interface with the adherend, and it is possible to have further excellent adhesive holding characteristics.

Further, for example, when the first adhesive layer does not contain a curable organic compound or a curable inorganic material as the first adhesive component, the content of the first phase-soluble polymer component in the first adhesive layer is the first. It can be in the range of 10 parts by mass or more and 200 parts by mass or less, particularly in the range of 20 parts by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the first adhesive component in the adhesive layer. The suitable content varies depending on the molecular weight and the like of the first phase-soluble polymer component, but can be approximately within the above range. If the content of the first phase-soluble polymer component is too small, the film-forming property and adhesiveness of the first adhesive layer may be poor, while if the content is too large, the strength of the first adhesive layer may be poor. It may cause a decrease.

(C) Second Phase-Visible Polymer Component The second adhesive layer can further contain a second phase-soluble polymer component having compatibility with the second adhesive component. In addition, the second phase-compatible polymer component can further have compatibility with the first adhesive component contained in the first adhesive layer. The reason, specific examples of the second phase-soluble polymer component, and the content of the second phase-soluble polymer component are the same as those of the first phase-soluble polymer component described above, and thus the description thereof is omitted here. .. When the first adhesive layer or the second adhesive layer contains a curable organic compound of any of an epoxy compound, an acrylic compound, and a polyol compound as the first adhesive component or the second adhesive component, the second phase solubility is described above. The effect of the polymer component can be more exerted.

The mass average molecular weight of the second phase-soluble polymer component can be made larger than the mass average molecular weight of the second adhesive component, particularly the mass average molecular weight of the curable organic compound. The reason, the specific range of the mass average molecular weight, and the measuring method thereof are the same as those of the first phase-soluble polymer component described above, and thus the description thereof is omitted here.

The second phase-soluble polymer component contained in the second adhesive layer and the first phase-soluble polymer component contained in the first adhesive layer may be the same component or different components. This is because when the first phase-soluble polymer component and the second phase-soluble polymer component are the same component, the same component is most likely to undergo phase diffusion, which is advantageous in terms of reaction rate. It is also advantageous in terms of cost. When the first phase-soluble polymer component and the second phase-soluble polymer component are the same component, the same component including the acrylic polymer can be used. At this time, the acrylic polymer can be a (meth) acrylic acid ester copolymer, and among them, an acrylic copolymer or a modified product thereof, particularly an MMA-BA-MMA copolymer or a modified product thereof. be able to. Further, the acrylic polymer can be a (meth) acrylic acid ester copolymer having a predetermined first polymer portion and second polymer portion or a modified product thereof. The reason is the same as the reason explained in the section of the first phase-soluble polymer component described above.

When the first phase-soluble polymer component and the second phase-soluble polymer component are different components, the first-phase-soluble polymer component and the second-phase-soluble polymer component can be appropriately selected for the member. The physical properties of the first adhesive composition and the first adhesive layer can be adjusted accordingly, and the suitability for the member can be enhanced.

When the first phase-soluble polymer component and the second phase-soluble polymer component are different components, the first phase-soluble weight depends on the functions required for the first adhesive composition and the first adhesive layer, respectively. The coalesced component and the second phase-soluble polymer component can be appropriately selected. For example, when the first adhesive layer and the second adhesive layer are laminated on the first member as described in the fourth embodiment and the fifth embodiment of the method for manufacturing an article described later, the first member on the first member side. The adhesive layer is required to have adhesive performance, and the second adhesive layer arranged on the outermost surface is required to have a protective function. In this case, the first adhesive layer is hardened by appropriately selecting the first phase-soluble polymer component and the second phase-soluble polymer component so that the second adhesive layer arranged on the outermost surface becomes harder after curing. Coatability can be imparted.

(D) Other components The first adhesive layer and the second adhesive layer also include inorganic particles such as silica and glass beads, a chain transfer agent, a flame retardant, a thickener, a heat radiating agent, an insulating agent, a conductive agent, and strength. It may contain arbitrary components such as fibers for improvement (particularly chopped fibers), tackifiers such as silicone compounds, antioxidants, and reaction inhibitors.

The first adhesive layer and the second adhesive layer may contain a colorant. When one of the first adhesive layer and the second adhesive layer contains a colorant, it is possible to easily distinguish it from an adhesive sheet having the other adhesive layer by adding a colorant to color one adhesive layer. It is possible to prevent work mistakes during construction. When both the first adhesive layer and the second adhesive layer contain a colorant, the colors of the colorants contained in each adhesive layer may be different from the viewpoint of facilitating the identification of the adhesive sheet. That is, the first adhesive layer and the second adhesive layer can have different colors. Further, for example, when the first adhesive layer and the second adhesive layer are laminated on the first member as described in the fourth embodiment and the fifth embodiment of the method for manufacturing an article described later, the first adhesive layer and the first adhesive layer and the second adhesive layer are laminated. Since at least one of the second adhesive layers contains a colorant, visibility can be enhanced, it becomes easy to confirm the portion to which the adhesive sheet is attached, and the member to which the adhesive sheet is attached can be protected. .. Examples of the colorant include pigments such as carbon black and dyes. Above all, the colorant can be a pigment. This is because by including the pigment as the colorant, the pigment can absorb ultraviolet rays and prevent the member from being deteriorated by ultraviolet rays.

Further, when the first adhesive layer and the second adhesive layer are laminated on the first member as described in the fourth embodiment and the fifth embodiment of the method for manufacturing an article described later, the first adhesive layer and the second adhesive layer are used. At least one of the adhesive layers can contain, for example, a weather resistant agent such as an ultraviolet absorber, a hindered amine-based light stabilizer, and an infrared reflector. Thereby, it is possible to protect the member and suppress the deterioration of the first adhesive layer and the second adhesive layer after curing with time.

(4) Properties The adhesive layer may be transparent or opaque, but can be transparent. This is because the components contained in the adhesive layer are sufficiently compatible with each other, and a desired function such as adhesiveness can be exhibited.

The thickness of the adhesive layer can be appropriately set according to the type of the member and the like, and can contain an amount of the adhesive component required for the curing reaction by contact between the first adhesive layer and the second adhesive layer. Just do it.

When at least the first adhesive component among the first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer contains a curable organic compound, a curable inorganic material, or the like, The thickness of the first adhesive layer can be made larger than the thickness of the second adhesive layer. This is because the thicker the first adhesive layer, the stronger the adhesiveness, and the stronger the adhesive strength than the second adhesive layer. Further, for example, the second adhesive component can act catalytically even in a small amount, but the second adhesive component itself is not cured. Therefore, when the first adhesive component is small, that is, the thickness is small, the second adhesive component is second. This is because a sufficient amount of the first adhesive component is not distributed to the adhesive layer, which causes poor curing. The thickness of the first adhesive layer is not particularly limited as long as it can exhibit its function, but can be, for example, 2 μm or more, particularly 5 μm or more, particularly 20 μm or more. Further, the thickness can be 200 μm or less, particularly 150 μm or less, particularly 100 μm or less.

Further, in the above case, the adhesive strength of the second adhesive layer can be increased by increasing the thickness, but the thickness may be reduced from the viewpoint of increasing the reactivity of contact curing with the first adhesive layer. it can. This is because the second adhesive component is likely to move to the first adhesive layer when it comes into contact with the first adhesive layer, so that the curing reaction is likely to proceed and the reactivity is improved. As described above, the second adhesive layer should be thinner than the first adhesive layer because, for example, even if the content of the second adhesive component is small, the function for the first adhesive component can be exhibited. And the adhesive strength can be weakened. The thickness of the second adhesive layer is not particularly limited as long as the function can be exhibited, but can be, for example, 2 μm or more, particularly 5 μm or more, particularly 10 μm or more. Further, the thickness can be 200 μm or less, particularly 150 μm or less, particularly 100 μm or less.

When at least the second adhesive component contains a curable organic compound, a curable inorganic material, or the like, the thicknesses of the first adhesive layer and the second adhesive layer are vice versa.

Further, when the adherend surface of the member is a rough surface, the thickness of the adhesive layer can be increased, and specifically, the thickness can be made equal to or greater than the height difference of the unevenness of the adherend surface. If the adhesive layer does not have a thickness equal to or greater than the height difference of the unevenness of the adherend surface, the adhesive layer cannot follow the unevenness and the adhesive area between the adhesive layer and the adherend surface becomes small. This is because the member cannot be held.

When the adhesive layer is provided on at least one surface side of the separator, for example, it may be provided on the entire surface on at least one surface side of the separator, or may be provided in a pattern.

When the first adhesive layer is provided on the entire surface on at least one surface side of the first separator, the first adhesive layer 22 is cut in the thickness direction as illustrated in FIGS. 2 (a) and 2 (b). It may have a notch 25 and a first adhesive 22a defined by the notch 25. In this case, as illustrated in FIG. 3A, the first member 1 can be attached to the first adhesive portion 22a in advance to prepare the member 20 with the first adhesive sheet. Since the curing reaction of the first adhesive layer does not proceed until it comes into contact with the second adhesive layer, a member with a first adhesive sheet is prepared in advance and stored for a long period of time until the first adhesive layer and the second adhesive layer are brought into contact with each other. The member with the first adhesive sheet can be used depending on the timing of bonding the members. Further, the first adhesive layer may have one first adhesive portion or may have a plurality of first adhesive portions. When the first adhesive layer has a plurality of first adhesive portions, a plurality of first members can be bonded to each first adhesive portion in advance to prepare a member with a first adhesive sheet. In this case, for example, when the size of the first member is relatively small, a plurality of first members can be efficiently bonded to the first adhesive sheet, and the member with the first adhesive sheet can be managed. It will be easy. Note that FIG. 2B is a cross-sectional view taken along the line AA of FIG. 2A. Further, FIG. 3 will be described later.

In the above case, the first adhesive layer is cut in the thickness direction by the cut portion, and each of the first adhesive portions is defined by the cut portion. The size and shape of the first adhesive portion defined by the cut portion are appropriately adjusted according to the size and shape of the adherend surface of the member.

Further, in the above case, the first separator is arranged on at least one surface side of the first adhesive layer. When the first separator is arranged on one side of the first adhesive layer, the first adhesive layer is cut in the thickness direction by the cut portion, but the first separator can be prevented from being cut. Further, when the first separators are arranged on both sides of the first adhesive layer, one first separator can be prevented from being cut, and the other first separator is at the same position as the first adhesive layer in the thickness direction. It may or may not be cut.

Similarly, the second adhesive layer may have a cut portion that cuts the second adhesive layer in the thickness direction, and may have a second adhesive portion defined by the cut portion. In the case where the second adhesive layer has a cut portion and has a second adhesive portion defined by the cut portion, the first adhesive layer has a cut portion and the cut portion is provided. It can be the same as the case of having the first adhesive portion defined by the portion.

Further, as illustrated in FIGS. 4A and 4B, the first adhesive layer has a pattern when the first adhesive layer 22 is provided in a pattern on at least one surface side of the first separator 21. It can have a first adhesive portion 22a in the shape of a shape. Also in this case, as illustrated in FIG. 5A, the first member 1 can be attached to the first adhesive portion 22a in advance to prepare the member 20 with the first adhesive sheet. Therefore, it has the same advantages as the above case. Further, the first adhesive layer may have one first adhesive portion or may have a plurality of first adhesive portions. When the first adhesive layer has a plurality of first adhesive portions, it has the same advantages as the above case. Note that FIG. 4B is a cross-sectional view taken along the line AA of FIG. 4A. Further, FIG. 5 will be described later.

Here, the pattern shape means a state in which a portion provided with an adhesive layer and a portion not provided with an adhesive layer are provided on at least one surface side of the separator.

In the above case, the size and shape of the first adhesive portion are appropriately adjusted according to the size and shape of the adherend surface of the member.

Similarly, the second adhesive layer can have a patterned second adhesive portion when the second adhesive layer is provided in a pattern on at least one surface side of the separator. When the second adhesive layer has the patterned second adhesive portion, it can be the same as the case where the first adhesive layer has the patterned first adhesive portion.

2. The separator adhesive sheet may have an adhesive layer, but may have a separator arranged on at least one surface side of the adhesive layer. The separator is detachably provided on at least one surface side of the adhesive layer. By arranging the separator, the adhesive layer can be protected until it is bonded to the member or another adhesive layer.

The adhesive sheet may have a separator on one side of the adhesive layer, or may have a separator on both sides. For example, the adhesive sheet before being attached to the member or the other adhesive sheet may have a separator on one side of the adhesive layer, or may have a separator on both sides. Further, the adhesive sheet after being attached to the member or the other adhesive sheet may have a separator on the surface opposite to the member of the adhesive layer or the other adhesive sheet.

The separator of the first adhesive sheet is referred to as a first separator, and the separator of the second adhesive sheet is referred to as a second separator.

The separator is not particularly limited as long as it can be peeled off from the adhesive layer, and can have enough strength to protect the adhesive layer. As such a separator, conventionally known ones such as a release film, a separate paper, a separate film, a separate paper, a release film, and a release paper can be used. Specific examples thereof include polypropylene, polyethylene and fluorine films. Further, the separator may be a single layer exemplified above and has releasability, but the releasable layer is formed on one side or both sides of a base material for releasable paper such as high-quality paper, coated paper, impregnated paper, and plastic film. You may use the laminated body which formed. The release layer is not particularly limited as long as it is a material having releasability, and is, for example, a silicone compound, an organic compound modified silicone compound, a fluorine compound, an aminoalkyd compound, a melamine compound, an acrylic compound, a polyester compound, or a long chain. There are alkyl compounds and the like. These compounds can be emulsion type, solvent type or solvent-free type.

When the adherend surface of the member is a rough surface, the separator can have flexibility. This is because when the adhesive sheet is attached to the member, the separator can also follow the elongation of the adhesive layer. Examples of such a separator include a PE film and the like.

The separator may have a light-shielding property depending on the type of material contained in the adhesive layer and the construction environment in which the members are bonded. This is because it is possible to prevent the adhesive layer from being deteriorated by being irradiated with ultraviolet rays or the like before the bonding process. Examples of the separator having a light-shielding property include an aluminum foil separator, an aluminum-deposited film, a paper separator, a colored separator, and a film separator containing an ultraviolet absorber.

Further, the separator may be easily peeled off on the surface in contact with the adhesive layer.

The first separator of the first adhesive sheet and the second separator of the second adhesive sheet may have the same color or different colors. Above all, the first separator and the second separator can have different colors. This is because it becomes easy to distinguish between the first adhesive sheet and the second adhesive sheet.

The adhesive sheet before being attached to the member may have separators on both sides of the adhesive layer. Such an adhesive sheet can be used when the adhesive sheet is attached to the member, the adhesive sheet is attached to the member with the adhesive sheet, or the adhesive sheets are attached to each other. When the adhesive layer has separators on both sides, the separators arranged on each surface may be the same or different, but one can have light peelability and the other can have heavy peelability.

3. 3. The first adhesive sheet and the second adhesive sheet may be single-wafered or may be long.

The first adhesive sheet and the second adhesive sheet are, for example, two kinds of liquid materials of a two-component separate coating type adhesive, that is, an adhesive composition containing a first adhesive component and an adhesive composition containing a second adhesive component. It can be formed by applying an object to one side of each separate separator and drying it. The adhesive composition may contain a solvent, if desired.

The method of applying the adhesive composition is not particularly limited, and a known printing method or coating method can be used. When the adhesive layer is formed in a pattern on one side of the separator, the adhesive composition may be applied in a pattern on one side of the separator. The coating method is not particularly limited, and a known printing method or coating method can be used. Further, the drying condition of the coating layer can be carried out under such a condition that the solvent contained in the coating layer can be sufficiently volatilized, and can be appropriately set according to the composition.

When forming a cut portion in the adhesive layer, for example, half-cut processing, pinhole processing, laser processing, or the like can be used as the method for forming the cut portion. When the separators are arranged on both sides of the adhesive layer, a cut portion is formed in the adhesive layer after forming the adhesive layer on one side of one separator and before arranging the other separator on the adhesive layer. Alternatively, an adhesive layer may be formed on one side of one separator, the other separator may be placed on the adhesive layer, and then a notch may be formed in the adhesive layer and the other separator. Further, after forming the cut portion in the adhesive layer, the adhesive layer can be provided in a pattern on one side of the separator by removing the portion other than the adhesive portion defined by the cut portion.

The adhesive sheet can also have separators on both sides of the adhesive layer by applying the adhesive composition to one side of the separator and drying to form an adhesive layer, and then arranging another separator on the adhesive layer. ..

B. First Embodiment of the Article Manufacturing Method The first embodiment of the article manufacturing method of the present disclosure (hereinafter, may be abbreviated as the manufacturing method of the first embodiment) is cured and adhered by contacting with each other. A method for manufacturing an article in which a first member and a second member are bonded together using a first adhesive layer and a second adhesive layer, wherein the first member has the first adhesive layer. A first preparatory step for preparing a member with a first adhesive sheet to which one surface of the first adhesive layer of the adhesive sheet is bonded, and a second adhesive having the second adhesive layer on the second member. The second preparatory step of preparing the member with the second adhesive sheet to which one surface of the second adhesive layer of the sheet is bonded, and the other surface of the first adhesive layer of the member with the first adhesive sheet. And a bonding step of bonding the other surface of the second adhesive layer of the member with the second adhesive sheet.

FIG. 6 is a process diagram showing an example of the manufacturing method of the first embodiment. As illustrated in FIG. 6, first, the member 20 with the first adhesive sheet is prepared (FIG. 6A, first preparation step). The member 20 with the first adhesive sheet is formed by bonding one surface of the first adhesive layer 22 of the first adhesive sheet 11 having the first adhesive layer 22 to the first member 1. As shown in FIG. 6A, the first adhesive layer 22 of the first adhesive sheet 11 may be provided on one side of the first separator 21. In addition, the member 30 with the second adhesive sheet is separately prepared (FIG. 6 (b), second preparation step). The member 30 with the second adhesive sheet is formed by bonding one surface of the second adhesive layer 24 of the second adhesive sheet 12 having the second adhesive layer 24 to the second member 2. As shown in FIG. 6B, the second adhesive layer 24 of the second adhesive sheet 12 may be provided on one side of the second separator 23. The first preparatory step and the second preparatory step can be performed in no particular order. Subsequently, the other surface of the first adhesive layer 22 of the member 20 with the first adhesive sheet and the other surface of the second adhesive layer 24 of the member 30 with the second adhesive sheet are bonded together (FIGS. 6C to 6C). (D), bonding process). When the member 20 with the first adhesive sheet and the member 30 with the second adhesive sheet have the first separator 21 and the second separator 23 on the other surface side of the first adhesive layer 22 and the second adhesive layer 24, respectively. Peel off the separator and stick it together. At this time, when the first adhesive layer 22 and the second adhesive layer 24 come into contact with each other, the components in the first adhesive layer 22 and the components in the second adhesive layer 24 are diffused to cause a curing reaction, resulting in adhesion. Improves sex. When the curing reaction is completed, the first adhesive layer 22 and the second adhesive layer 24 become a cured adhesive layer 3 exhibiting a strong adhesive force (FIG. 6 (d)), and the first member 1 passes through the cured adhesive layer 3. And the second member can be firmly bonded. As a result, the article 10 having the first member 1, the cured adhesive layer 3, and the second member 2 is obtained.

According to the manufacturing method of the first embodiment, by adhering the first adhesive layer of the member with the first adhesive sheet and the second adhesive layer of the member with the second adhesive sheet, the curing reaction proceeds by contact. The members can be bonded to each other with the strong adhesive force developed by curing. Further, since the adhesive sheet is attached to each member with an adhesive sheet, it is not necessary to mix two liquids like a two-component adhesive, and the members can be easily attached to each other. is there. In addition, the thickness of the adhesive layer can be controlled, and problems such as uneven application of the adhesive, forgetting to apply the adhesive, and protrusion from the adherend surface can be suppressed. Furthermore, since the curing reaction of the first adhesive layer and the second adhesive layer does not proceed until they come into contact with each other, they can be separately stored for a long period of time as members with an adhesive sheet until before the bonding process. , The adhesive layers of the members with adhesive sheets can be brought into contact with each other according to the timing of bonding. In this way, by forming two types of liquid materials of the two-component separate coating type adhesive into a sheet, it is possible to simplify the production of an article as compared with the coating bonding method.

The manufacturing method of the first embodiment includes the types of the first member and the second member, the direction of the adherend surface (adhesive surface) when the members are bonded to each other, and the adhesive force of the first adhesive layer and the second adhesive layer. Construction is possible according to the degree of. Hereinafter, a construction example using the manufacturing method of the first embodiment will be described with reference to an example.

The first example of the construction example using the manufacturing method of the first embodiment is a construction example in which the adherend surface (adhesive surface) of the first member and the second member is a vertical surface or a normal surface. In the example shown in FIG. 7, the adherend surface of the second member 2 is a vertical surface. The reference numerals in FIG. 7 are the same as those in FIG.

In the above example, the adherend surface is within the range of −45 degrees or more and +45 degrees or less, especially within the range of -30 degrees or more and +30 degrees or less, particularly -15 degrees or more and +15 degrees with respect to the vertical plane or the normal plane. It can be within the following range. In the case of the adherent surface, when the first adhesive layer on the surface of the first member and the second adhesive layer on the surface of the second member are bonded in the bonding step, shear stress is applied in the vertical direction or the normal direction. However, since the first adhesive layer and the second adhesive layer have desired adhesive strength and cohesive strength, respectively, the curing reaction due to the contact between the first adhesive layer and the second adhesive layer proceeds and sufficient adhesive strength is exhibited. Until then, the bonded state of the first member and the second member can be maintained, and the peeling of the members due to the application of shear stress can be suppressed. Further, even if the adhesive force decreases with time, the strong adhesive force developed by the progress of the curing reaction during that period makes it possible to firmly adhere and hold the first member and the second member. Further, by adjusting the adhesive strength of the first adhesive layer and the second adhesive layer, it is possible to reattach the first adhesive layer and the second adhesive layer after they are bonded before they are cured. Further, at least one of the first adhesive layer and the second adhesive layer is made weakly adhesive or medium adhesive, or at least one is made highly viscous or low viscosity, so that the adherend surface is adhered in a bonded state. On the other hand, it can be moved in parallel, and the position can be adjusted. The specific physical properties and combinations of the first adhesive layer and the second adhesive layer are as described above.

The second example of the construction example using the manufacturing method of the first embodiment is a construction example in which the adherend surface (adhesive surface) of the first member and the second member is a horizontal plane. In the example shown in FIG. 8, the adherend surface of the second member 2 is a horizontal plane. The reference numerals in FIG. 8 are the same as those in FIG.

In the above example, the adherend surface is within the range of −45 degrees or more and +45 degrees or less, particularly within the range of -30 degrees or more and +30 degrees or less, and particularly within the range of -15 degrees or more and +15 degrees or less. can do. In the case of the adherend surface, since the first adhesive layer and the second adhesive layer have desired adhesive force and cohesive force, respectively, until the curing reaction by contact between the first adhesive layer and the second adhesive layer proceeds. The bonded state of the first member and the second member can be maintained. Further, since the first member and the second member are firmly adhered to each other after curing, it is possible to prevent the first member and the second member from being displaced even if they are subjected to shear stress in the horizontal direction. Further, by adjusting the adhesive force between the first adhesive layer and the second adhesive layer, it is possible to reattach the first adhesive layer and the second adhesive layer after they are bonded before they are cured. Further, at least one of the first adhesive layer and the second adhesive layer is made weakly adhesive or medium adhesive, or at least one is made highly viscous or low viscosity, so that the adherend surface is adhered in a bonded state. On the other hand, it can be moved in parallel, and the position can be adjusted. The specific physical properties and combinations of the first adhesive layer and the second adhesive layer are as described above.

Hereinafter, each step in the manufacturing method of the first embodiment will be described.

1. 1. 1st Preparation Step and 2nd Preparation Step In the 1st preparation step in the manufacturing method of the 1st embodiment, one surface of the 1st adhesive layer of the 1st adhesive sheet having the 1st adhesive layer on the 1st member This is a step of preparing a member with a first adhesive sheet to which the members are bonded together. Further, in the second preparation step, a member with a second adhesive sheet is prepared in which one surface of the second adhesive layer of the second adhesive sheet having the second adhesive layer is bonded to the second member. It is a process to do. The first preparatory step and the second preparatory step can be performed in no particular order.

The member with an adhesive sheet may be one in which one member is bonded to one surface of the adhesive layer of the adhesive sheet, or a plurality of members are bonded to one surface of the adhesive layer of the adhesive sheet. It may be a member with a multi-sided adhesive sheet.

In the first preparatory step and the second preparatory step, a member with an adhesive sheet in which an adhesive sheet is preliminarily attached to the member may be prepared. This is because by using a ready-made member with an adhesive sheet, it is not necessary to manufacture the member with an adhesive sheet when manufacturing an article, and the time can be shortened.

Further, at least one of the first preparation step and the second preparation step uses an adhesive sheet having the separator and the adhesive layer provided on at least one surface side of the separator, and the separator of the adhesive layer is arranged. It may have an adhesive sheet bonding step of bonding the unfinished surface to the member.

When the first preparatory step includes the first adhesive sheet bonding step, the first adhesive layer of the first adhesive sheet has a cut portion for cutting the first adhesive layer in the thickness direction, and is defined by the cut portion. It may have a first adhesive portion. In this case, in the first adhesive sheet bonding step, the first member can be bonded to one surface of the first adhesive portion. In this case, the first adhesive layer of the first adhesive sheet may have one first adhesive portion, and a plurality of first adhesive portions 22a are provided as illustrated in FIGS. 2 (a) and 2 (b). You may have. When the first adhesive layer has a plurality of first adhesive portions, in the first adhesive sheet bonding step, as illustrated in FIG. 3A, a plurality of first adhesive portions 22a are formed on one surface of the plurality of first adhesive portions 22a. The first member 1 can be bonded to each other. In this case, for example, when the size of the first member is relatively small, a plurality of first members can be efficiently bonded to the first adhesive sheet, and the member with the first adhesive sheet can be managed. It will be easy.

Similarly, when the second preparation step includes the second adhesive sheet bonding step, the second adhesive layer of the second adhesive sheet has a cut portion for cutting the second adhesive layer in the thickness direction, and the cut portion has a cut portion. It may have a second adhesive portion defined by. When the second adhesive layer of the second adhesive sheet has a cut portion and has a second adhesive portion defined by the cut portion, the first adhesive layer of the first adhesive sheet described above has a cut portion. It can be the same as the case where it has a notch and has a first adhesive portion defined by the notch.

When the first preparatory step includes the first adhesive sheet bonding step, in the first adhesive sheet bonding step, a plurality of first members are bonded to one surface of the first adhesive layer to perform multi-imposition. 1 A member with an adhesive sheet may be manufactured.

Similarly, when the second preparatory step includes a second adhesive sheet bonding step, in the second adhesive sheet bonding step, a plurality of second members are bonded to one surface of the second adhesive layer for multi-imposition. A member with a second adhesive sheet may be manufactured.

Further, when the first preparation step includes the first adhesive sheet bonding step, the first adhesive layer of the first adhesive sheet may have a patterned first adhesive portion. In this case, in the first adhesive sheet bonding step, the first member can be bonded to one surface of the first adhesive portion. In this case, the first adhesive layer of the first adhesive sheet may have one first adhesive portion, and a plurality of first adhesive portions 22a are provided as illustrated in FIGS. 4A and 4B. You may have. When the first adhesive layer has a plurality of first adhesive portions, in the first adhesive sheet bonding step, as illustrated in FIG. 5A, a plurality of first adhesive portions 22a are formed on one surface of the plurality of first adhesive portions 22a. The first member 1 can be bonded to each other. In this case, for example, when the size of the first member is relatively small, a plurality of first members can be efficiently bonded to the first adhesive sheet, and the member with the first adhesive sheet can be managed. It will be easy.

Similarly, when the second preparatory step includes a second adhesive sheet bonding step, the second adhesive layer of the second adhesive sheet may have a patterned second adhesive portion. The case where the second adhesive layer of the second adhesive sheet has the patterned second adhesive portion is the same as the case where the first adhesive layer of the first adhesive sheet has the patterned first adhesive portion. can do.

The method of bonding the member and the adhesive sheet can be appropriately selected depending on the form of the adhesive sheet. When using an adhesive sheet in which a separator is arranged on one side of the adhesive layer, for example, a required amount is unwound from an adhesive sheet roll wound in a roll shape, the adhesive layer side is arranged on a member, and then cutting is performed. Can be pasted together. When using an adhesive sheet in which separators are arranged on both sides of the adhesive layer, one separator of the single-wafer adhesive sheet is peeled off to expose the adhesive layer, and a member is attached to the adhesive layer. Can be done.

In the adhesive sheet bonding step, the adhesive sheet may be bonded to the entire area of the adherend surface of the member, or may be bonded to the peripheral edge of the adherent surface of the member in a frame shape. When the adhesive sheets are bonded together, a squeegee or the like can be used to prevent air bubbles from entering the adhesive surface between the member and the adhesive layer of the adhesive sheet.

In the adhesive sheet bonding step, the adhesive sheet may be bonded by heat-bonding using an iron or the like, or may be pressed and bonded using a roller while giving light vibration. The adhesive layer easily enters the gap between the members, and the bonding strength between the adhesive sheet and the member can be increased.

Further, in the adhesive sheet bonding step, when the adhesive force of the adhesive layer is within the range of 0.05 N / inch or more and less than 5 N / inch, the adhesive sheet can be moved and bonded to the member. .. When the adhesive sheet is moved to a member and attached to a desired position, the adhesive layer is made weakly adhesive or medium adhesive so that the adhesive sheet can be placed on another adherend or another place. Even if it adheres, it can be easily peeled off and reattached, so that reworkability can be improved. In addition, the adhesive sheet does not easily adhere to the hands of the operator and is easy to handle, so that workability can be improved. At this time, the member can be a fixed member.

Further, when the adhesive layer is weakly adhesive or medium-adhesive, the adhesive sheet bonding step (for example, the first adhesive sheet bonding step) is performed on the other adhesive sheet-attached member (for example, the second adhesive sheet-attached member). It is possible to have a positioning step of determining the bonding position of the above. By making the adhesive layer weakly adhesive or medium-adhesive, the adhesive sheet is placed on the member in the preparatory step so that the bonding position of the other member with the adhesive sheet becomes a desired position when the bonding process is performed. This is because it can be re-pasted. For example, if the first adhesive layer of the first adhesive sheet exhibits a predetermined adhesive force, the first preparatory step includes a first adhesive sheet bonding step and a positioning step of determining the bonding position of the second adhesive sheet-attached member. , Both can be included. The same applies to the second preparatory step. At this time, the member can be a fixed member.

Further, in the adhesive sheet bonding step, one surface of the adhesive layer of the adhesive sheet may be bonded to the member while applying a shearing force to one surface of the adhesive layer. For example, when a liquid adhesive is applied onto a member, if a shearing force is applied to the coated surface of the liquid adhesive, the coating thickness of the liquid adhesive becomes non-uniform, and it is difficult to obtain good adhesive performance. Further, it is difficult to apply the liquid adhesive depending on the arrangement and form of the members, and the liquid adhesive may squeeze out from the adherend surface or drip. On the other hand, in the adhesive sheet, since the liquid material is preliminarily formed into a sheet, the thickness of the adhesive layer is unlikely to become uneven even if a shearing force is applied to the surface of the adhesive layer, and good adhesive performance can be obtained. In addition, the thickness of the adhesive sheet can be controlled, and it is possible to suppress the occurrence of problems such as protrusion from the adherend surface. Above all, for example, when the adhesive sheet is attached to the adherend surface of the member from diagonally above, the surface of the adhesive layer receives a shearing force, which is advantageous. Further, for example, as shown in FIG. 9A, the first member 1 has an internal space 1a and an opening 1b, and the first adhesive layer 22 of the first adhesive sheet 11 is provided inside the first member 1. In the case of bonding, it is advantageous because it is difficult to bond the adhesive sheet to the adherend surface of the first member from directly above. The same applies when the second member has an internal space and an opening.

In the above case, the adhesive strength of the adhesive layer can be in the range of 0.05 N / inch or more and less than 5 N / inch. That is, the adhesive layer can be weakly viscous or medium-adhesive. By making the adhesive layer weakly adhesive or medium-adhesive, the reworkability is improved, so that when a shearing force is applied to the surface of the adhesive layer, the thickness of the adhesive layer is less likely to become uneven. ..

One of the first member and the second member is fixed, and the adherend surface of the fixed member can be an inclined surface. The inclination angle of the inclined surface can be in the range of 30 degrees or more and 180 degrees or less, and in particular, in the range of 45 degrees or more and 180 degrees or less, particularly in the range of 90 degrees or more and 180 degrees or less. For example, when the adherend surface of the fixed member is an inclined surface, it is difficult to apply the liquid adhesive, and uneven coating, application leakage, squeeze out of the liquid adhesive from the adherend surface, and liquid dripping occur. It will occur. On the other hand, in the adhesive sheet, since the liquid material is made into a sheet in advance, the thickness can be controlled, and it is possible to suppress the occurrence of problems such as uneven thickness and protrusion from the adherend surface.

2. Laminating Step In the laminating step in the manufacturing method of the first embodiment, the other surface of the first adhesive layer of the first adhesive sheet-attached member and the other of the second adhesive layer of the second adhesive sheet-attached member. It is a process of bonding with the surface of. In this step, the first adhesive layer and the second adhesive layer are cured by contacting each other, and the cured adhesive layer formed by the contact curing can exhibit a strong adhesive force, and the members are bonded to each other. can do.

In the member with the first adhesive sheet and the member with the second adhesive sheet, the first separator is arranged on the side opposite to the side of the first member of the first adhesive layer, and / or the second member of the second adhesive layer. When the second separator is arranged on the side opposite to the side, the first separator and / or the second separator of the member with the second adhesive sheet is peeled off to expose the first adhesive layer. And the surface of the second adhesive layer are bonded together.

The method of bonding the first adhesive layer of the member with the first adhesive sheet and the second adhesive layer of the member with the second adhesive sheet is not particularly limited, and is, for example, the first adhesive layer of the member with the first adhesive sheet. , A method can be used in which the second adhesive layer of the member with the second adhesive sheet is faced with each other and bonded from directly above.

Further, as another bonding method, a method of moving the other member with an adhesive sheet to the one member with an adhesive sheet and bonding the other member can be mentioned. For example, when a liquid adhesive is used, it is very difficult to move and bond the members coated with the liquid adhesive. Further, when the member coated with the liquid adhesive is moved, the liquid adhesive squeezes out from the adherend surface and drips. On the other hand, in the adhesive sheet, since the liquid material is made into a sheet in advance, the member with the adhesive sheet can be moved and bonded. In addition, the thickness of the adhesive sheet can be controlled, and problems such as uneven thickness and protrusion from the adherend surface can be suppressed.

In the case of the above method, the adhesive strength of the adhesive layer of the moving member with the adhesive sheet can be in the range of 0.05 N / inch or more and less than 5 N / inch. That is, the adhesive layer of the moving adhesive sheet-attached member can be weakly viscous or medium-adhesive. By making the adhesive layer weakly adhesive or medium-adhesive, it can be easily peeled off and reattached.

Further, as another bonding method, one member is fixed, and a method of moving the other member with an adhesive sheet to the fixed member with an adhesive sheet and bonding the other member can be mentioned. .. The advantages of this method are as described above.

Further, as another bonding method, when at least one of the first adhesive layer and the second adhesive layer exhibits low viscosity or high viscosity, the first adhesive layer of the member with the first adhesive sheet and the second adhesive sheet are attached. Examples thereof include a method in which the second adhesive layer of the member is faced with each other and one is slid and moved in a direction parallel to the adherend surface of the other to be bonded. The above bonding method is suitable, for example, when the adhesive surfaces of the first member and the second member are within a predetermined range with respect to the horizontal plane.

Further, as another bonding method, the other surface of the first adhesive layer of the member with the first adhesive sheet is applied while applying a shearing force to the other surface of the first adhesive layer and the other surface of the second adhesive layer. A method of bonding the surface and the other surface of the second adhesive layer of the member with the second adhesive sheet can be mentioned. The advantages of this method are as described above. Above all, for example, when the other member with an adhesive sheet is attached to the adherend surface of one member with an adhesive sheet from an obliquely upward direction, the surface of the adhesive layer receives a shearing force, which is advantageous. Further, for example, as shown in FIGS. 9A to 9D, the first member 1 has an internal space 1a and an opening 1b, and a second adhesive sheet is inside the member 20 with the first adhesive sheet. When the attachment member 30 is fitted, the coating thickness of the liquid adhesive tends to be non-uniform, whereas the thickness of the adhesive layer of the adhesive sheet is unlikely to be non-uniform, which is advantageous. The same applies when the forms of the first member and the second member are reversed.

In the above case, the adhesive strength of the adhesive layer of at least one member with an adhesive sheet can be in the range of 0.05 N / inch or more and less than 5 N / inch. That is, the adhesive layer of at least one member with an adhesive sheet can be weakly viscous or medium-adhesive. By making the adhesive layer weakly adhesive or medium-adhesive, the reworkability is improved, so that when a shearing force is applied to the surface of the adhesive layer, the thickness of the adhesive layer is less likely to become uneven. ..

When the member with an adhesive sheet is a member with a multi-imposition adhesive sheet, a portion having one member can be cut out from the member with the multi-imposition adhesive sheet and bonded to the other member with an adhesive sheet.

Further, in the first preparation step, the separator 23 is arranged on one side of the first adhesive layer 22 as illustrated in FIGS. 2A and 2B, and the first adhesive layer 22 thickens the first adhesive layer 22. Using a first adhesive sheet 11 having a notch 25 for cutting in the direction and having a first adhesive 22a defined by the notch 25, the first adhesive 22a is illustrated in FIG. 3A. When the first adhesive sheet bonding step of bonding the first member 1 to the surface on which the first separator 21 is not arranged is provided, the bonding step is the first bonding as illustrated in FIG. 3 (b). From the first separator 21 of the sheet-attached member 20, the first adhesive portion 22a and the first adhesive portion-attached member 20a in which the first member 1 is laminated in this order are peeled off, and although not shown, the first adhesive portion-attached member 20a The surface of the first adhesive portion 22a can be attached to the member with the second adhesive sheet. In this case, the first adhesive layer of the first adhesive sheet may have one first adhesive portion or may have a plurality of first adhesive portions. The same can be applied to the member with the second adhesive sheet.

Further, in the first preparatory step, the first separator 21 is arranged on one side of the first adhesive layer 22 as illustrated in FIGS. 4A and 4B, and the first adhesive layer 22 is the first adhesive in a pattern. The first adhesive sheet 11 having the portion 22a is used, and the first member 1 is bonded to the surface of the first adhesive portion 22a where the first separator 21 is not arranged as illustrated in FIG. 5A. When the sheet bonding step is provided, in the bonding step, as illustrated in FIG. 5B, the first adhesive portion 22a and the first member 1 are sequentially arranged from the first separator 21 of the member 20 with the first adhesive sheet. The laminated member with the first adhesive portion 20a can be peeled off, and the surface of the first adhesive portion 22a of the member with the first adhesive portion 20a, which is not shown, can be attached to the member with the second adhesive sheet. In this case, the first adhesive layer of the first adhesive sheet may have one first adhesive portion or may have a plurality of first adhesive portions. The same can be applied to the member with the second adhesive sheet.

This step is a positioning step in which one of the members with the first adhesive sheet and the member with the second adhesive sheet is reattached and positioned according to the strength of the adhesive force of the first adhesive layer and the second adhesive layer. You may have. When the positioning step is provided, the first adhesive layer and the second adhesive layer can be a combination of adhesive strengths described in the above section "Combination for Good Reworkability".

The first adhesive layer and the second adhesive layer can cause a curing reaction by contact. The curing temperature of the first adhesive layer and the second adhesive layer can include room temperature, and can be set, for example, in the range of 5 ° C. or higher and 180 ° C. or lower. Since the curing temperature includes room temperature, it is possible to eliminate the need for heating and cooling, so that the production of the article can be simplified. The normal temperature means 23 ° C.

Further, the first adhesive layer and the second adhesive layer may be heated in a contact state. By heating the first adhesive layer and the second adhesive layer in contact with each other, the viscosities of the first adhesive layer and the second adhesive layer are lowered, and the adhesion between the first adhesive layer and the second adhesive layer is enhanced. This is because the components contained in the first adhesive layer and the second adhesive layer can be easily transferred and the curing reaction can be promoted. Further, even when the first adhesive layer and the second adhesive layer do not have adhesiveness or the adhesiveness is low, the first adhesive layer and the second adhesive layer are heated to develop adhesiveness or adhesiveness. Can be enhanced, and the adhesion between the first adhesive layer and the second adhesive layer can be enhanced. The heating temperature can be appropriately set according to the composition of the first adhesive layer and the second adhesive layer, and can be, for example, in the range of 30 ° C. or higher and 120 ° C. or lower, particularly 40 ° C. or higher and 80 ° C. or lower. Can be within the range of. If the heating temperature is too high, the flowability of the first adhesive layer and the second adhesive layer will increase, and the adhesive will squeeze out from the adherend surface. Because there is. Further, depending on the components contained in the first adhesive layer and the second adhesive layer such as a low-molecular-weight monomer component, an odor is generated at a high temperature. On the other hand, if the heating temperature is too low, the curing promoting effect cannot be obtained so much, and it may be difficult to shorten the process time.

Further, the first adhesive layer and the second adhesive layer may be pressed in a contact state. By pressing the first adhesive layer and the second adhesive layer in contact with each other, the first adhesive layer and the second adhesive layer are brought into close contact with each other, and the components contained in the first adhesive layer and the second adhesive layer can be easily transferred. This is because the curing reaction can be promoted. Examples of the pressing method include a method of pressing using a roller and the like.

Further, the first adhesive layer and the second adhesive layer may be irradiated with light in a contact state. For example, when at least one of the first adhesive layer and the second adhesive layer has a component activated by light, irradiation is performed with the first adhesive layer and the second adhesive layer in contact with each other. Therefore, the curing reaction can be promoted. Further, in the above case, even when the first adhesive layer and the second adhesive layer do not have adhesiveness or the adhesiveness is low, by irradiating the first adhesive layer and the second adhesive layer with light. , The adhesiveness can be developed or the adhesiveness can be enhanced, and the adhesiveness of the first adhesive layer and the second adhesive layer can be enhanced. The light to be irradiated is not particularly limited as long as it can enhance the reactivity, and examples thereof include ultraviolet light.

Further, the above heating, pressing and light irradiation may be performed individually or in combination. For example, when heating and pressing, a method of heat-pressing using an iron or the like can be used.

Further, the first adhesive layer and the second adhesive layer can be cured for a desired time after being bonded. This is because the components contained in the first adhesive layer and the components contained in the second adhesive layer are diffused, and when they are sufficiently cured, a strong adhesive force can be exhibited. The curing time can be appropriately set according to the composition of the first adhesive layer and the second adhesive layer, and can be, for example, in the range of 0.5 hours or more and 72 hours or less. If the curing time is too short, it will not be possible to redo the bonding, while if the curing time is too long, the process time will increase.

The first adhesive layer and the second adhesive layer become a cured adhesive layer when the curing reaction by contact is completed. The cured adhesive layer is a cured product layer formed by reacting and curing the first adhesive component contained in the first adhesive layer and the second adhesive component contained in the second adhesive layer. The cured adhesive layer may be a single layer, or the contact interface between the first adhesive layer and the second adhesive layer may remain.

The hardened adhesive layer can firmly bond the first member and the second member with its strong adhesive force, and can have an adhesive force capable of holding the state for a long time. Among them, the tensile shear strength is high. can do. This is because even when shear stress is applied over time, the first member and the second member can be held fixed for a long period of time, and peeling of the members can be suppressed. The tensile shear strength of the hardened adhesive layer has been described in the section "Combination with good reactivity" in the above-mentioned "Combination of adhesive strength of the first adhesive layer and the second adhesive layer". Omit.

C. Second Embodiment of the Article Manufacturing Method The second embodiment of the article manufacturing method of the present disclosure (hereinafter, may be abbreviated as the manufacturing method of the second embodiment) is cured and adhered by contacting with each other. A method for manufacturing an article in which a first member and a second member are bonded together using a first adhesive layer and a second adhesive layer, wherein the first member has the first adhesive layer. The preparatory step of preparing the member with the first adhesive sheet to which one surface of the first adhesive layer of the adhesive sheet is bonded, and the other surface of the first adhesive layer of the member with the first adhesive sheet. The second adhesive sheet bonding step of bonding one surface of the second adhesive layer of the second adhesive sheet having the second adhesive layer to form a member with a multi-layer adhesive sheet, and the member with the multi-layer adhesive sheet. It has a second member bonding step of bonding the second member to the other surface of the second adhesive layer.

FIG. 10 is a process diagram showing an example of the manufacturing method of the second embodiment. As illustrated in FIG. 10, first, with a first adhesive sheet, one surface of the first adhesive layer 22 of the first adhesive sheet 11 having the first adhesive layer 22 is bonded to the first member 1. The member 20 is prepared (FIG. 10 (a), preparation step). As shown in FIG. 10A, the first adhesive sheet 11 has a first separator 21 arranged on the other surface (the surface opposite to the first member side) of the first adhesive layer 22. You may. Next, one surface of the second adhesive layer 24 of the second adhesive sheet 12 having the second adhesive layer 24 is bonded to the other surface of the first adhesive layer 22 of the member 20 with the first adhesive sheet to form a multilayer. The member 50 with an adhesive sheet is used (FIG. 10 (b), second adhesive sheet bonding step). When the first separator 21 is arranged on the other surface of the first adhesive layer 22, the first separator 21 is peeled off. As shown in FIG. 10B, the second adhesive sheet 12 has a second separator 23 arranged on the other surface (the surface opposite to the first member side) of the second adhesive layer 24. You may. The first adhesive layer 22 and the second adhesive layer 24 can be cured by coming into contact with each other. Next, the second member 2 is bonded to the other surface of the second adhesive layer 24 of the member 50 with the multilayer adhesive sheet (FIG. 10 (c), second member bonding step). When the second separator 23 is arranged on the other surface of the second adhesive layer 24, the second separator 23 is peeled off. In the second member bonding step, the first adhesive layer 22 and the second adhesive layer 24 become a cured adhesive layer 3 that exhibits a strong adhesive force by completing the curing reaction by contact, and becomes a cured adhesive layer 3 via the cured adhesive layer 3. The 1st member 1 and the 2nd member 2 can be firmly bonded to each other. As a result, the article 10 having the first member 1, the cured adhesive layer 3 and the second member 2 can be obtained. Note that P in FIG. 10C indicates a region (cured region) cured by contact between the first adhesive layer 22 and the second adhesive layer 24.

According to the manufacturing method of the second embodiment, by adhering the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet on the first member, the curing reaction proceeds by contact, and the curing reaction proceeds. The members can be bonded to each other with the strong adhesive force developed by curing. Further, since the first adhesive sheet and the second adhesive sheet are laminated on the first member by laminating them, it is not necessary to mix the two liquids unlike the two-component adhesive, and the laminating is easy. It is possible to do. In addition, since the adhesive sheet is used, it is possible to control the thickness of the adhesive layer, and it is possible to suppress the occurrence of problems such as uneven application of the adhesive, forgetting to apply the adhesive, and protrusion from the adherend surface. Furthermore, since the adhesive layer is not provided on the second member side, the second member can be easily handled. In this way, by forming two types of liquid materials of the two-component separate coating type adhesive into a sheet, it is possible to simplify the production of an article as compared with the coating bonding method.

The manufacturing method of the second embodiment includes the types of the first member and the second member, the direction of the adherend surface (adhesive surface) when the members are bonded to each other, and the adhesive force of the first adhesive layer and the second adhesive layer. Construction is possible according to the degree of.

Hereinafter, each step in the manufacturing method of the second embodiment will be described.

1. 1. Preparation Step In the preparation step in the manufacturing method of the second embodiment, one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer is bonded to the first member. This is a process of preparing a member with an adhesive sheet. The preparatory step can be the same as the first preparatory step of the method for manufacturing the article of the first embodiment.

2. Second Adhesive Sheet Bonding Step The second adhesive sheet bonding step in the manufacturing method of the second embodiment has the second adhesive layer on the other surface of the first adhesive layer of the member with the first adhesive sheet. This is a step of bonding one surface of the second adhesive layer of the second adhesive sheet.

The second adhesive sheet can have a second separator and a second adhesive layer provided on at least one surface side of the second separator. That is, in this step, the first separator of the member with the first adhesive sheet is peeled off, and the second separator of the second adhesive sheet is not arranged on the surface of the first adhesive layer exposed by peeling off the first separator. It can be a step of laminating the surfaces.

The method of bonding one surface of the second adhesive layer of the second adhesive sheet to the other surface of the first adhesive layer of the member with the first adhesive sheet is not particularly limited. For example, a second separator is arranged on one side of the second adhesive layer, and a required amount is unwound from the second adhesive sheet roll using a second adhesive sheet roll wound in a roll shape with the second adhesive layer as a winding inner surface. Therefore, a method of bonding the second adhesive layer and the first adhesive and then cutting the adhesive can be used. Further, using a single-wafered second adhesive sheet in which the second separators are arranged on both sides of the second adhesive layer, one second separator of the second adhesive sheet is peeled off to expose the second adhesive layer and the first. A method of bonding with an adhesive layer can be used.

The method of bonding the first adhesive layer of the member with the first adhesive sheet and the second adhesive layer of the second adhesive sheet is not particularly limited, and for example, the first adhesive layer of the member with the first adhesive sheet and the first adhesive layer. 2 A method can be used in which the second adhesive layer of the adhesive sheet is faced with each other and bonded from directly above.

As another bonding method, when the adhesive strength of the first adhesive layer is at least within the range of 0.05 N / inch or more and less than 5 N / inch, one surface of the second adhesive layer of the second adhesive sheet. On the other hand, a method of moving and bonding the members with the first adhesive sheet can be mentioned. By making the first adhesive layer weakly adhesive or medium-adhesive, the reworkability can be improved. At this time, the first member can be a fixing member.

Further, as another bonding method, when the adhesive strength of the second adhesive layer is at least within the range of 0.05 N / inch or more and less than 5 N / inch, the other of the first adhesive layer of the member with the first adhesive sheet. A method of moving the second adhesive sheet and sticking it to the surface of the above can be mentioned. By making the second adhesive layer weakly adhesive or medium-adhesive, the reworkability can be improved. At this time, the first member can be a fixing member.

Further, as another bonding method, a method of moving the member with the first adhesive sheet to the second adhesive sheet and bonding the members can be mentioned. The advantages of this method are as described in the section of the manufacturing method of the first embodiment described above.

Further, as another bonding method, when the first adhesive layer exhibits low viscosity or high viscosity, the second adhesive sheet is parallel to the adherend surface of the first adhesive layer of the member with the first adhesive sheet. Can be mentioned as a method of sliding and pasting together.

Further, as another bonding method, while applying a shearing force to the other surface of the first adhesive layer and one surface of the second adhesive layer, the other surface of the first adhesive layer of the member with the first adhesive sheet is applied. A method of bonding the surface and one surface of the second adhesive layer of the second adhesive sheet can be mentioned. The advantages of this method are as described in the section of the manufacturing method of the first embodiment described above. Above all, for example, when the second adhesive sheet is attached to the adherend surface of the member with the first adhesive sheet from an obliquely upward direction, the surface of the adhesive layer receives a shearing force, which is advantageous.

In the above case, the adhesive strength of the first adhesive layer of the moving member with the first adhesive sheet can be in the range of 0.05 N / inch or more and less than 5 N / inch. That is, the first adhesive layer of the moving member with the first adhesive sheet can be weakly viscous or medium adhesive. By making the first adhesive layer weakly adhesive or medium-adhesive, the reworkability is improved. Therefore, when a shearing force is applied to the surface of the adhesive layer, the thickness of the adhesive layer is less likely to become uneven. Can be done.

When the member with the first adhesive sheet is a member with the first adhesive sheet for multi-imposition, a portion having one first member is cut out from the member with the first adhesive sheet for multi-imposition and bonded to the second adhesive sheet. be able to.

Further, in the first preparation step, the separator 23 is arranged on one side of the first adhesive layer 22 as illustrated in FIGS. 2A and 2B, and the first adhesive layer 22 thickens the first adhesive layer 22. Using a first adhesive sheet 11 having a notch 25 for cutting in the direction and having a first adhesive 22a defined by the notch 25, the first adhesive 22a is illustrated in FIG. 3A. When the first adhesive sheet bonding step of bonding the first member 1 to the surface on which the first separator 21 is not arranged is provided, the second adhesive sheet bonding step is as illustrated in FIG. 3 (b). , The first adhesive portion 20a in which the first adhesive portion 22a and the first member 1 are laminated in this order is peeled off from the first separator 21 of the first adhesive sheet attached member 20, and although not shown, the first adhesive portion is attached. The surface of the first adhesive portion 22a of the attachment member 20a can be bonded to the second adhesive sheet. In this case, the first adhesive layer of the first adhesive sheet may have one first adhesive portion or may have a plurality of first adhesive portions.

Further, in the first preparatory step, the first separator 21 is arranged on one side of the first adhesive layer 22 as illustrated in FIGS. 4A and 4B, and the first adhesive layer 22 is the first adhesive in a pattern. The first adhesive sheet 11 having the portion 22a is used, and the first member 1 is bonded to the surface of the first adhesive portion 22a where the first separator 21 is not arranged as illustrated in FIG. 5A. When the sheet bonding step is provided, in the second adhesive sheet bonding step, as illustrated in FIG. 5B, the first separator 21 of the first adhesive sheet-attached member 20 to the first adhesive portion 22a and the first adhesive sheet are attached. The first adhesive portion 20a on which the members 1 are laminated in order can be peeled off, and the surface of the first adhesive portion 22a of the first adhesive portion 20a, which is not shown, can be bonded to the second adhesive sheet. .. In this case, the first adhesive layer of the first adhesive sheet may have one first adhesive portion or may have a plurality of first adhesive portions.

By adjusting the adhesive strength of the first adhesive layer and the second adhesive layer, the members with the first adhesive sheet and the second adhesive sheet can be reattached and their positions can be adjusted. The first adhesive layer and the second adhesive layer can be a combination of adhesive strengths described in the above section "Combination that improves reworkability".

Further, in this step, the first adhesive layer and the second adhesive layer may be in contact with each other and may be heated, pressed, or irradiated with light. The heating, pressing, and light irradiation can be the same as the manufacturing method of the first embodiment described above.

In this step, the first adhesive layer and the second adhesive layer undergo a curing reaction upon contact, but the curing can be prevented from being completed before the second member bonding step described later. This is because it becomes difficult to attach the second member to the second adhesive layer.

3. 3. Second member bonding step The second member bonding step in the manufacturing method of the second embodiment is a step of bonding the second member to the other surface of the second adhesive layer of the member with the multilayer adhesive sheet. ..

The method of bonding the other surface of the second adhesive layer of the member with the multilayer adhesive sheet and the second member is not particularly limited. For example, a method can be used in which the second adhesive layer of the member with the multilayer adhesive sheet and the second member face each other and are bonded from directly above.

Further, as another bonding method, when the adhesive strength of the second adhesive layer is at least within the range of 0.05 N / inch or more and less than 5 N / inch, one of the member with the multilayer adhesive sheet and the second member. On the other hand, a method of moving the other side and pasting them together can be mentioned. By making the second adhesive layer weakly adhesive or medium-adhesive, the reworkability can be improved.

Further, as another bonding method, a method of moving the member with the multilayer adhesive sheet to the second member and bonding the members can be mentioned. The advantages of this method are as described in the section of the manufacturing method of the first embodiment described above.

In the case of the above method, the adhesive strength of the second adhesive layer of the moving member with the multilayer adhesive sheet can be in the range of 0.05 N / inch or more and less than 5 N / inch. That is, the second adhesive layer of the moving member with the multilayer adhesive sheet can be weakly viscous or medium adhesive. This is because the reworkability can be improved by making the second adhesive layer weakly adhesive or medium-adhesive.

Further, as another bonding method, one of the first member and the second member is fixed, and the other of the member with the multilayer adhesive sheet and the second member is moved with respect to the fixed one. The method of letting them stick together can be mentioned. The advantages of this method are as described in the section of the manufacturing method of the first embodiment described above.

As another bonding method, when the second adhesive layer exhibits low viscosity or high viscosity, the second adhesive layer of the member with the multilayer adhesive sheet and the second member face each other, and one of them is covered with the other. Examples thereof include a method of sliding and adhering in a direction parallel to the landing surface. The above bonding method is suitable, for example, when the adhesive surfaces of the first member and the second member are within a predetermined range with respect to the horizontal plane.

Further, as another bonding method, the other surface of the second adhesive layer of the member with the multilayer adhesive sheet and the second member are bonded while applying a shearing force to the other surface of the second adhesive layer. The method can be mentioned. The advantages of this method are as described in the section of the manufacturing method of the first embodiment described above. Above all, for example, when the second member is attached to the adherend surface of the member with the multilayer adhesive sheet from an obliquely upward direction, the surface of the adhesive layer receives a shearing force, which is advantageous. Further, for example, as shown in FIGS. 11A to 11D, the second member 2 has an internal space 2a and an opening 2b, and a member 50 with a multilayer adhesive sheet is provided inside the second member 2. In the case of fitting, the coating thickness of the liquid adhesive tends to be non-uniform, whereas the thickness of the adhesive layer of the adhesive sheet is unlikely to be non-uniform, which is advantageous.

In the above case, the adhesive strength of the second adhesive layer of the member with the multilayer adhesive sheet can be in the range of 0.05 N / inch or more and less than 5 N / inch. That is, the second adhesive layer of the member with the multilayer adhesive sheet can be weakly viscous or medium adhesive. By making the second adhesive layer weakly adhesive or medium-adhesive, the reworkability is improved. Therefore, when a shearing force is applied to the surface of the adhesive layer, the thickness of the adhesive layer is less likely to become uneven. Can be done.

By adjusting the adhesive force of the second adhesive layer, the member with the multilayer adhesive sheet and the second member can be reattached and the position can be adjusted.

This step is performed within the curing time after the first adhesive layer and the second adhesive layer are bonded in the second adhesive sheet bonding step, so that the curing reaction due to the contact between the first adhesive layer and the second adhesive layer is carried out. Until the completion, the second member can be fixed by the adhesiveness of the second adhesive layer. Further, when the curing reaction is completed, the second member can be firmly fixed. In addition, the worker can perform other constructions during curing. Above all, this step can be performed within 0.5 hours after the first adhesive layer and the second adhesive layer come into contact with each other. This is because there is a concern that the adhesive strength to the second member will decrease as the curing progresses. The curing time and curing temperature are the same as those of the production method of the first embodiment described above.

In addition, when heating, pressing, and light irradiation are not performed in the second adhesive sheet bonding step, heating may be performed in this step with the first adhesive layer and the second adhesive layer in contact with each other. , You may press it, or you may irradiate it with light. The heating, pressing, and light irradiation can be the same as the manufacturing method of the first embodiment described above.

In this step, when the curing reaction by the contact between the first adhesive layer and the second adhesive layer is completed, the first adhesive layer and the second adhesive layer are firmly adhered to each other, and between the first member and the second member. A cured adhesive layer is formed on the surface.

The details of the cured adhesive layer and the contents not described in the production method of this embodiment are the same as those of the production method of the first embodiment described above.

D. Third Embodiment of the Article Manufacturing Method The third embodiment of the article manufacturing method of the present disclosure (hereinafter, may be abbreviated as the manufacturing method of the third embodiment) is cured and adhered by contacting with each other. A method for manufacturing an article in which a first member and a second member are bonded together using a first adhesive layer and a second adhesive layer, which is the first adhesive sheet having the first adhesive layer. A preparatory step for preparing a multi-layer adhesive sheet in which one surface of the adhesive layer and one surface of the second adhesive layer of the second adhesive sheet having the second adhesive layer are bonded to each other, and the multi-layer adhesive sheet. The first member bonding step of bonding the first member to the other surface of the first adhesive layer to form a member with a multilayer adhesive sheet, and the other of the second adhesive layer of the member with a multilayer adhesive sheet. It has a second member bonding step of bonding the second member to the surface of the above.

FIG. 12 is a process diagram showing an example of the manufacturing method of the third embodiment. As illustrated in FIG. 12, first, one surface of the first adhesive layer 22 of the first adhesive sheet 11 having the first adhesive layer 22 and the second adhesive of the second adhesive sheet 12 having the second adhesive layer 24 are bonded. A multilayer adhesive sheet 40 formed by laminating one surface of the layer 24 is prepared (FIG. 12 (a), preparation step). As shown in FIG. 12A, the first adhesive sheet 11 is a first separator 21 arranged on the other surface of the first adhesive layer 22 (the surface opposite to the surface to be bonded to the second adhesive layer 24). May have. Further, the second adhesive sheet 12 may have a second separator 23 arranged on the other surface of the second adhesive layer 24 (the surface opposite to the surface to be bonded to the first adhesive layer 22). Further, in the multilayer adhesive sheet 40, the first separator 21 and the second separator 23 may be arranged on the other surfaces of the first adhesive layer 22 and the second adhesive layer 24, respectively. Next, the first member 1 is bonded to the other surface of the first adhesive layer 22 of the multi-layer adhesive sheet 40 to form a member 50 with a multi-layer adhesive sheet (FIG. 12 (b), first member bonding step). .. Further, the second member 2 is bonded to the other surface of the second adhesive layer 24 of the member 50 with the multilayer adhesive sheet (FIG. 12 (c), second member bonding step). When the first separator 21 is arranged on the other surface of the first adhesive layer 22 of the multilayer adhesive sheet 40, the first separator 21 is peeled off. Similarly, when the second separator 23 is arranged on the other surface of the second adhesive layer 24 of the multilayer adhesive sheet 40, the second separator 23 is peeled off. In the multilayer adhesive sheet 40, the first adhesive layer 22 and the second adhesive layer 24 are in contact with each other, and during the first member bonding step and the second member bonding step, the first adhesive layer 22 and the second adhesive layer 24 are in contact with each other. The components in the second adhesive layer 24 are diffused to cause a curing reaction, and a strong adhesive force can be exhibited. The first adhesive layer 22 and the second adhesive layer 24 become the cured adhesive layer 3 when the curing reaction is completed (FIG. 12 (c)), and firmly secure the first member 1 and the second member 2 via the cured adhesive layer 3. Can be pasted together. As a result, the article 10 having the first member 1, the cured adhesive layer 3, and the second member 2 is obtained. Note that P in FIGS. 12 (b) and 12 (c) indicates a region (cured region) cured by contact between the first adhesive layer 22 and the second adhesive layer 24.

The preparatory step illustrated in FIG. 12A includes a multi-layer adhesive sheet forming step of laminating the first adhesive sheet 11 and the second adhesive sheet 12 to form the multi-layer adhesive sheet 40. The multi-layer adhesive sheet forming step will be described later.

According to the manufacturing method of the third embodiment, a multilayer adhesive sheet in which the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet are laminated in advance is used for the multilayer adhesive sheet. By laminating each member, it is possible to shorten the laminating time between the members, and it is possible to laminate the members with a strong adhesive force developed by curing. Further, since the above-mentioned multi-layer adhesive sheet is used, it is not necessary to mix two liquids such as a two-component adhesive, and it is possible to easily bond the members to each other. In addition, the thickness of the adhesive layer can be controlled, and problems such as uneven application of the adhesive, forgetting to apply the adhesive, and protrusion from the adherend surface can be suppressed. In this way, by forming two types of liquid materials of the two-component separate coating type adhesive into a sheet, it is possible to simplify the production of an article as compared with the coating bonding method.

Hereinafter, each step of the manufacturing method of the third embodiment will be described in detail.

1. 1. Preparation Step In the preparation step in the manufacturing method of the third embodiment, one surface of the first adhesive layer having the first adhesive layer and the second adhesive sheet having the second adhesive layer are described. This is a step of preparing a multi-layer adhesive sheet in which one surface of the adhesive layer is bonded to each other.

The multilayer adhesive sheet may have a first separator on the surface of the first adhesive layer opposite to the second adhesive layer side, and may have a first separator on the surface of the second adhesive layer opposite to the first adhesive layer side. It may have a second separator. Therefore, the multilayer adhesive sheet includes the first adhesive layer of the first adhesive sheet having the first adhesive layer provided on at least one surface side of the first separator and the first separator, the second separator, and the second separator. It is possible to form a multilayer body in which the second adhesive layer of the second adhesive sheet having the second adhesive layer provided on at least one surface side of the above is bonded to each other.

The multilayer adhesive sheet may have a cured region at the adhesive interface between the first adhesive layer and the second adhesive layer. The cured region refers to a region in which the components contained in each of the first adhesive layer and the second adhesive layer are diffused and cured.

In this step, a multilayer adhesive sheet in which the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet are previously bonded may be prepared in a separate step.

Further, in this step, the first adhesive layer of the first adhesive sheet having the first adhesive layer provided on at least one surface side of the first separator and the first separator, and the second separator and the second separator are used. It may have a multilayer adhesive sheet forming step of forming a multilayer adhesive sheet by bonding the second adhesive layer of the second adhesive sheet having the second adhesive layer provided on at least one surface side.

In the multi-layer adhesive sheet forming step, for example, a first adhesive sheet having first separators on both sides of the first adhesive layer and a second adhesive sheet having second separators on both sides of the second adhesive layer are prepared and described above. The first separator on one side of the first adhesive sheet and the second separator on one side of the second adhesive sheet are peeled off, and the exposed first adhesive layer and the second adhesive layer are bonded to each other to form a multilayer adhesive sheet. Can be prepared.

The method of bonding the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet is not particularly limited, and for example, of the first adhesive layer of the first adhesive sheet and the second adhesive sheet. A method can be used in which the second adhesive layer is faced with each other and bonded from directly above.

Further, as another bonding method, the adhesive strength of the first adhesive layer is at least within the range of 0.05 N / inch or more and less than 5 N / inch, and it is applied to one surface of the second adhesive layer of the second adhesive sheet. On the other hand, a method of moving and bonding the first adhesive sheet can be mentioned. Further, the adhesive strength of the second adhesive layer is at least within the range of 0.05 N / inch or more and less than 5 N / inch, and the second adhesive sheet is applied to one surface of the first adhesive layer of the first adhesive sheet. A method of moving and pasting them together can be mentioned. By making at least one of the first adhesive layer and the second adhesive layer weakly adhesive or medium-adhesive, the reworkability can be improved.

Further, as another bonding method, while applying a shearing force to one surface of the first adhesive layer and one surface of the second adhesive layer, the bonding force is applied to one surface of the first adhesive layer of the first adhesive sheet. , A method of bonding to one surface of the second adhesive layer of the second adhesive sheet can be mentioned. The advantages of this method are as described in the section of the manufacturing method of the first embodiment described above.

In the above case, the adhesive strength of at least one of the first adhesive layer and the second adhesive layer can be in the range of 0.05 N / inch or more and less than 5 N / inch. That is, at least one of the first adhesive layer and the second adhesive layer can be weakly viscous or medium-adhesive. By making at least one of the adhesive layers weakly adhesive or medium-adhesive, the reworkability is improved, so that when a shearing force is applied to the surface of the adhesive layer, the thickness of the adhesive layer is less likely to become uneven. be able to.

Further, in the multi-layer adhesive sheet forming step, for example, a first adhesive sheet roll having a first separator on one surface of the first adhesive layer and being wound in a roll shape with the first adhesive layer as a winding inner surface is used. A second adhesive sheet roll having a second separator on one surface of the second adhesive layer and being wound in a roll shape with the second adhesive layer as a winding inner surface is prepared, and each is unwound to obtain the second adhesive layer. 1 The first adhesive layer of the adhesive sheet and the second adhesive layer of the second adhesive sheet can be bonded and cut into a desired shape to prepare a multilayer adhesive sheet.

The first adhesive sheet and the second adhesive sheet may be attached manually by an operator, and may be mechanically and continuously performed using a roll laminator (for example, Lamipacker LPP4513 manufactured by Fujipla Co., Ltd.) or the like. May be good. The same applies to the other aspects described above.

Further, in this step, the first adhesive layer and the second adhesive layer may be in contact with each other and may be heated, pressed, or irradiated with light. The heating, pressing, and light irradiation can be the same as the manufacturing method of the first embodiment described above.

If the laminating step described later is not performed immediately after preparing the multi-layer adhesive sheet, the multi-layer adhesive sheet is stored in a low temperature environment so that the curing reaction due to contact between the first adhesive layer and the second adhesive layer does not proceed. can do. The above-mentioned low temperature environment refers to an environment of 5 ° C. or lower, and the multilayer adhesive sheet can be stored in a refrigerator or freezer at −20 ° C. or higher and 5 ° C. or lower.

(B) First member bonding step and second member bonding step The first member bonding step in the manufacturing method of the third embodiment is performed on the other surface of the first adhesive layer of the multilayer adhesive sheet. This is a process of laminating one member to form a member with a multi-layer adhesive sheet. Further, the second member bonding step in the manufacturing method of the third embodiment is a step of bonding the second member to the other surface of the second adhesive layer of the member with the multilayer adhesive sheet.

In the multilayer adhesive sheet, when the first separator is arranged on the other surface of the first adhesive layer, the first member can be bonded to the exposed first adhesive layer by peeling off the first separator. .. Further, in the member with a multilayer adhesive sheet, when the second separator is arranged on the other surface of the second adhesive layer, the second member is bonded to the exposed second adhesive layer by peeling off the second separator. can do.

The method of bonding the first adhesive layer and the first member of the multilayer adhesive sheet is not particularly limited, and for example, the first adhesive layer of the multilayer adhesive sheet and the first member are opposed to each other and bonded from directly above. A matching method can be used.

Further, as another bonding method, when the adhesive strength of the first adhesive layer is at least within the range of 0.05 N / inch or more and less than 5 N / inch, one of the first member and the multilayer adhesive sheet is attached. Then, a method of moving the other side and pasting them together can be mentioned. Reworkability can be improved by making at least the first adhesive layer weakly adhesive or medium-adhesive.

Further, as another bonding method, a method of bonding the other surface of the first adhesive layer of the multilayer adhesive sheet and the first member while applying a shearing force to the other surface of the first adhesive layer is used. Can be mentioned. The advantages of this method are as described in the section of the manufacturing method of the first embodiment described above.

In the above case, the adhesive strength of at least the first adhesive layer can be in the range of 0.05 N / inch or more and less than 5 N / inch. That is, at least the first adhesive layer can be weakly viscous or medium-adhesive. By making the first adhesive layer weakly adhesive or medium-adhesive, the reworkability is improved. Therefore, when a shearing force is applied to the surface of the first adhesive layer, the thickness of the first adhesive layer becomes more uneven. It can be made difficult to become.

The method of bonding the second adhesive layer and the second member of the member with the multi-layer adhesive sheet is not particularly limited, and for example, the second adhesive layer of the member with the multi-layer adhesive sheet and the second member face each other. A method of bonding from directly above can be used.

Further, as another bonding method, the adhesive strength of the second adhesive layer is at least within the range of 0.05 N / inch or more and less than 5 N / inch, and one of the member with the multilayer adhesive sheet and the second member On the other hand, a method of moving the other side and pasting them together can be mentioned. Reworkability can be improved by making at least the second adhesive layer weakly adhesive or medium-adhesive.

Further, as another bonding method, a method of moving the member with the multilayer adhesive sheet to the second member and bonding the members can be mentioned. The advantages of this method are as described in the section of the manufacturing method of the first embodiment described above.

Further, as another bonding method, one of the first member and the second member is fixed, and the other of the member with the multilayer adhesive sheet and the second member is moved with respect to the fixed one. The method of letting them stick together can be mentioned. The advantages of this method are as described in the section of the manufacturing method of the first embodiment described above.

Further, as another bonding method, the other surface of the second adhesive layer of the member with the multilayer adhesive sheet and the second member are bonded while applying a shearing force to the other surface of the second adhesive layer. The method can be mentioned. The advantages of this method are as described in the method for manufacturing the article of the first embodiment described above. Further, this method can be the same as the manufacturing method of the second embodiment described above.

In the above case, the adhesive strength of at least the second adhesive layer can be in the range of 0.05 N / inch or more and less than 5 N / inch. That is, at least the second adhesive layer can be weakly viscous or medium-adhesive. By making the second adhesive layer weakly adhesive or medium-adhesive, the reworkability is improved. Therefore, when a shearing force is applied to the surface of the adhesive layer, the thickness of the adhesive layer is less likely to become uneven. Can be done.

The first member bonding step and the second member bonding step can be performed from the preparation step to the completion of the curing reaction by the contact of the first adhesive layer and the second adhesive layer. This is because as the curing of the first adhesive layer and the second adhesive layer progresses, it may become difficult to bond the members together. In the preparatory step, when the multilayer adhesive sheet is not stored in a low temperature environment, it can be performed within 0.5 hours after the first adhesive layer and the second adhesive layer come into contact with each other. Further, in the preparatory step, when the multilayer adhesive sheet is stored in a low temperature environment, it can be performed during the curing time after being released from the low temperature environment. The curing time can be the same as the production method of the first embodiment described above.

When heating, pressing, and light irradiation are not performed in the above preparation step, in this step, the first adhesive layer and the second adhesive layer may be heated or pressed in contact with each other. Well, you may irradiate with light. The heating, pressing, and light irradiation can be the same as the manufacturing method of the first embodiment described above.

3. 3. In addition, the third implementation includes a bonding method utilizing the physical properties of the adhesive layer, arrangement of the first member and the second member, and a cured adhesive layer formed by the contact curing reaction of the first adhesive layer and the second adhesive layer. The contents not described in the manufacturing method of the embodiment can be the same as the manufacturing method of the first embodiment and the manufacturing method of the second embodiment described above.

E. Fourth Embodiment of the Article Manufacturing Method The fourth embodiment of the article manufacturing method of the present disclosure (hereinafter, may be abbreviated as the manufacturing method of the fourth embodiment) is cured and adhered by contacting with each other. A method for manufacturing an article using the first adhesive layer and the second adhesive layer, which is one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer on the first member. A second adhesive sheet having the second adhesive layer on the other surface of the first adhesive layer of the member with the first adhesive sheet and the preparatory step of preparing the member with the first adhesive sheet to which the members are bonded together. It has a second adhesive sheet bonding step of bonding one surface of the second adhesive layer.

FIG. 13 is a process diagram showing an example of the manufacturing method of the fourth embodiment. The manufacturing method of the fourth embodiment includes a preparation step (FIG. 13 (a)) and a second adhesive sheet bonding step (FIG. 13 (b)). 13 (a) and 13 (b) are the same as those of FIGS. 10 (a) and 10 (b) described above. The first adhesive layer 22 and the second adhesive layer 24 become the cured adhesive layer 3 when the curing reaction is completed (FIG. 13 (c)). As shown in FIG. 13C, after the second adhesive sheet bonding step, the second separator 23 of the second adhesive sheet 12 is arranged on the surface of the cured adhesive layer 3 opposite to the first member 1. If so, the second separator 23 may be peeled off. As a result, the article 10 having at least the first member 1 and the cured adhesive layer 3 can be obtained.

According to the manufacturing method of the fourth embodiment, by adhering the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet on the first member, the curing reaction proceeds by contact, and the curing reaction proceeds. The first member and the adhesive layer can be integrated with the strong adhesive force developed by curing. Further, since the first adhesive sheet and the second adhesive sheet are laminated on the first member by laminating them, it is not necessary to mix the two liquids unlike the two-component adhesive, and the laminating is easy. It is possible to do. In addition, since the adhesive sheet is used, it is possible to control the thickness of the adhesive layer, and it is possible to suppress the occurrence of problems such as uneven application of the adhesive, forgetting to apply the adhesive, and protrusion from the adherend surface. Further, by including the other member in one adhesive layer or arranging the other member at the contact interface between the first adhesive layer and the second adhesive layer, the other member is held by the cured adhesive layer. It can be fixed, and the first member can be repaired or reinforced by the other members. In this way, by forming two types of liquid materials of the two-component separate coating type adhesive into a sheet, it is possible to simplify the production of an article as compared with the coating bonding method.

The manufacturing method of the fourth embodiment can be the same as the manufacturing method of the second embodiment described above, except that the second member bonding step is not performed. Hereinafter, each step of the method for manufacturing an article according to the fourth embodiment will be described.

1. 1. Preparation Step In the preparation step in the manufacturing method of the fourth embodiment, one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer is bonded to the first member, that is, the first adhesion. This is a process of preparing a member with a sheet. The preparatory step can be the same as the preparatory step of the manufacturing method of the second embodiment described above.

In the first adhesive sheet, another member may be arranged in advance on the surface of the first adhesive layer on the first member side or the surface on the opposite side thereof, and the first adhesive layer is impregnated with the other member. You may. This is because the contact curing of the first adhesive layer and the second adhesive layer makes it possible to include other members in the cured adhesive layer. In the article 10 illustrated in FIG. 14, another member 4 is included in the cured adhesive layer 3.

2. Second Adhesive Sheet Bonding Step The second adhesive sheet bonding step in the manufacturing method of the fourth embodiment has the second adhesive layer on the other surface of the first adhesive layer of the member with the first adhesive sheet. This is a step of bonding one surface of the second adhesive layer of the second adhesive sheet. The second adhesive sheet bonding step can be the same as the second adhesive sheet bonding step of the manufacturing method of the second embodiment described above.

In the second adhesive sheet, another member may be arranged on one surface of the second adhesive layer (the surface on the side of the first adhesive layer), and the second adhesive layer is impregnated with the other member. May be good. The reason is as described above.

The second adhesive sheet has a second separator on the other surface of the second adhesive layer (the surface opposite to the first adhesive layer side), and the surface of the second separator on the second adhesive layer side is a shaping surface. It may be. By using the surface of the second separator on the second adhesive layer side as the shaping surface, after contact curing with the first adhesive layer 22 and the second adhesive layer 24 as illustrated in FIGS. 13 (b) and 13 (c). By peeling off the second separator 23 arranged on the second adhesive layer 24, it is possible to obtain an article 10 in which the shape of the shaping surface of the second separator 23 is shaped on the surface of the cured adhesive layer 3. This is because the design can be imparted.

In this step, before attaching one surface of the second adhesive layer of the second adhesive sheet to the member with the first adhesive sheet, the other surface of the first adhesive layer of the member with the first adhesive sheet is attached to the other surface. It may have a step of arranging the members. The reason is the same as the reason described above.

3. 3. Others In the production method of the fourth embodiment, at least one of the first adhesive sheet and the second adhesive sheet can contain a pigment. When applying the manufacturing method of goods to the manufacturing method of infrastructure structures, it is possible to make it easy to see where the repaired part is from a distance, and by including pigment, the base to which the adhesive sheet is attached. This is because it can protect.

F. Fifth Embodiment of the Article Manufacturing Method The fifth embodiment of the article manufacturing method of the present disclosure (hereinafter, may be abbreviated as the manufacturing method of the fifth embodiment) is cured and adhered by contacting with each other. A method for manufacturing an article using a first adhesive layer and a second adhesive layer, wherein one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer and the second adhesive layer are used. A preparatory step of preparing a multi-layer adhesive sheet formed by laminating one surface of the second adhesive layer of the second adhesive sheet having an adhesive layer and the other surface of the first adhesive layer of the multi-layer adhesive sheet. , A first member bonding step of bonding the first member.

FIG. 15 is a process diagram showing an example of the manufacturing method of the fifth embodiment. The manufacturing method of the fifth embodiment includes a preparation step (FIG. 15 (a)) and a bonding step (FIG. 15 (b)). 15 (a) and 15 (b) are the same as those of FIGS. 12 (a) and 12 (b) described above. The first adhesive layer 22 and the second adhesive layer 24 become the cured adhesive layer 3 when the curing reaction is completed (FIG. 15 (c)). As shown in FIG. 15C, when the second separator 23 of the second adhesive sheet 12 is arranged on the surface of the cured adhesive layer 3 opposite to the first member 1 after the bonding step, when The second separator 23 may be peeled off. As a result, the article 10 having at least the first member 1 and the cured adhesive layer 3 can be obtained.

According to the manufacturing method of the fifth embodiment, a multilayer adhesive sheet in which the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet are laminated in advance is used for the multilayer adhesive sheet. By laminating the members, the laminating time can be shortened, and the first member and the adhesive layer can be integrated with the strong adhesive force developed by curing. Further, since the above-mentioned multilayer adhesive sheet is used, it is not necessary to mix the two liquids as in the case of the two-component adhesive, and the bonding can be easily performed. In addition, the thickness of the adhesive layer can be controlled, and problems such as uneven application of the adhesive, forgetting to apply the adhesive, and protrusion from the adherend surface can be suppressed. Further, by including the other member in one adhesive layer or arranging the other member at the contact interface between the first adhesive layer and the second adhesive layer, the other member is held by the cured adhesive layer. It can be fixed, and the first member can be repaired or reinforced by the other members. In this way, by forming two types of liquid materials of the two-component separate coating type adhesive into a sheet, it is possible to simplify the production of an article as compared with the coating bonding method.

The manufacturing method of the fifth embodiment can be the same as the manufacturing method of the third embodiment described above, except that the second member bonding step is not performed. Hereinafter, each step of the method for manufacturing an article according to the fifth embodiment will be described.

1. 1. Preparation Step In the preparation step in the manufacturing method of the fifth embodiment, one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer and the second adhesive sheet having the second adhesive layer are described. This is a step of preparing a multi-layer adhesive sheet in which one surface of the second adhesive layer is bonded to each other. The preparatory step can be the same as the preparatory step of the manufacturing method of the third embodiment described above.

In the first adhesive sheet, another member may be arranged in advance on one surface (the surface on the second adhesive layer side) of the first adhesive layer or the surface on the opposite side thereof, and the other member may be arranged in the first adhesive layer. The member may be impregnated. Further, in the second adhesive sheet, another member may be arranged in advance on one surface of the second adhesive layer (the surface on the side of the first adhesive layer), and the other member is impregnated in the second adhesive layer. May be. This is because the contact curing of the first adhesive layer and the second adhesive layer makes it possible to include other members in the cured adhesive layer.

The second adhesive sheet has a second separator on the other surface of the second adhesive layer (the surface opposite to the first adhesive layer side), and the surface of the second separator on the second adhesive layer side is a shaping surface. It may be. By using the surface of the second separator on the side of the second adhesive layer as a shaping surface, the second separator arranged on the second adhesive layer is peeled off after the contact curing of the first adhesive layer and the second adhesive layer. This is because it is possible to obtain an article in which the shape of the shaping surface of the second separator is shaped on the surface of the cured adhesive layer, and it is possible to impart designability.

2. Laminating Step The laminating step in the manufacturing method of the fifth embodiment is a step of laminating the first member to the other surface of the first adhesive layer of the multilayer adhesive sheet. The bonding step can be the same as the first member bonding step of the manufacturing method of the third embodiment described above.

In this step, before the first member is attached to the other surface of the first adhesive layer of the member with the multilayer adhesive sheet, another member is attached to the other surface of the first adhesive layer of the member with the first adhesive sheet. It may have a step of arranging. The reason is the same as the reason described above.

3. 3. Others In the production method of the fifth embodiment, at least one of the first adhesive sheet and the second adhesive sheet can contain a pigment. When applying the manufacturing method of goods to the manufacturing method of infrastructure structures, it is possible to make it easy to see where the repaired part is from a distance, and by including pigment, the base to which the adhesive sheet is attached. This is because it can protect.

G. Uses and Details The Methods for Manufacturing Articles of the Disclosure can be used for manufacturing methods for articles in various fields, and the uses thereof are not limited, but among them, they are used as methods for manufacturing articles that are difficult to heat or irradiate with light. Can be done. Specifically, the manufacturing method of the article of the present disclosure can be applied to a building article, an infrastructure structure, an automobile, and an electronic component.

1. 1. Building Articles As a method for manufacturing a building article, any method for manufacturing an article from the first embodiment to the third embodiment can be used.

Examples of building articles include building structures generally constructed in the building industry such as houses, buildings, buildings, and towers, and composite building materials used for these.

The first member and the second member are building materials constituting a building article, and are appropriately selected according to the type thereof. The form of the building material is not particularly limited as long as it has an adherend surface.

The building material may be composed of, for example, an inorganic material, an organic material, or a composite material or a laminated material in which these are combined. The materials of the first member and the second member may be the same or different, and can be appropriately selected and combined according to the usage environment, application, and the like.

Examples of the organic building material formed of the organic material include a wooden board and an organic material board. Examples of the wood board include a wood veneer composed of trees such as cedar, cypress, pine, lauan, and teak, wood plywood, particle board, and medium density fiberboard (MDF). Further, as the inorganic building material formed of an inorganic material, for example, a slate plate, a caucal plate, a gypsum board, a brick, concrete, a cement mortar, a metal material, a ceramic material or the like is used.

Examples of the above-mentioned building materials include those known in building construction, specifically, skeletons such as pillars, beams, ceilings, walls, and floors of existing building structures, and skeletons when newly constructing building structures. Examples thereof include building members such as floor boards, wall boards, and ceiling boards used for constructing the above, and surface covering materials used by adhering a skeleton or building members to the surface thereof as a base. Examples of the surface covering material include vinyl wallpaper, textile wallpaper, paper wallpaper, inorganic wallpaper, decorative film, tile, panel, decorative board and other wall covering materials, tile, linoleum, flooring block, flooring, cushion floor, flooring board and the like. Decorative flooring can be mentioned.

As a combination of the first member and the second member, for example, one may be a surface material and the other may be a skeleton of a building structure. Specifically, one of the first member and the second member may be a wall covering material and the other may be a wall of a building structure, one may be a decorative flooring material, and the other may be a floor of a building structure. There may be. Further, one of the first member and the second member can be used as a skeleton of a building structure, and the other can be used as a skeleton of another building structure. By bonding the two types of skeletons together via the first adhesive layer and the second adhesive layer, the hardened adhesive layer can be used as an alternative to welding or bolting.

2. Infrastructure structure As the infrastructure structure, the above-mentioned manufacturing method of articles can be used, and among them, the manufacturing method of the fourth embodiment can be used.

Infrastructure structures include, for example, bridges, pedestals, tunnels, slopes, road pavements, river management facilities, sabo dikes, sabo floor fixing, sewage pipes, sewage treatment plants, port facilities, airports, public housing, and apartment buildings. , General housing, city parks, government facilities, coastal levees, route signs, road signs, traffic lights, overhead lines, transmission equipment, power transmission equipment, etc.

For example, by attaching the second member, the first member can be repaired or reinforced to form an infrastructure structure. Further, the adhesive layer contains a repair or reinforcing member (hereinafter, abbreviated as repair / reinforcing member) without using the second member, or the repair / reinforcing member is arranged on the surface of the adhesive layer. Then, the first member can be repaired or reinforced as an infrastructure structure by the cured adhesive layer containing the repair / reinforcing member. Further, for example, a sensor device can be attached as a second member to the first member which is an infrastructure structure. Further, since the sensor device is included in the adhesive layer or the sensor device is arranged on the surface of the adhesive layer without using the second member, the cured adhesive layer containing the sensor device can be formed in the infrastructure structure. It can be attached to a first member.

The first member and the second member may be any members for infrastructure, and their forms are not particularly limited as long as they have an adherend surface. Examples of the infrastructure member include an infrastructure structure before repair or reinforcement, an infrastructure structure before installation of a sensor device (hereinafter referred to as a target infrastructure structure), a repair / reinforcement member, a sensor device, and the like. In the method of manufacturing an infrastructure structure, one of the first member and the second member, which are infrastructure members, is the target infrastructure structure, and the target infrastructure structure may be fixed.

As the repair / reinforcing member, a conventionally known member can be used, and examples thereof include a member that can be impregnated in the adhesive layer. Specifically, examples of reinforcing applications include aramid fibers, carbon fibers, vinylon fibers, PET fibers and the like. Further, examples of repair applications to which the function can be imparted include advertising signs, coating films, waterproof sheets, water absorbing sheets, ultraviolet resistant sheets, water retaining sheets, colored sheets and the like. Reinforcement includes repairs such as hiding cracks and erasing irregularities, and also includes those that provide functions such as strength improvement, water retention, surface protection, and decoration.

The sensor device is attached to an infrastructure member to detect a change in the state of the infrastructure member. Examples of the sensor device include a sensor unit and an RF tag. As the sensor unit, for example, a sensor unit capable of detecting physical quantities such as inertial force (acceleration, angular velocity), distortion, acoustic wave, ultrasonic wave, and electromagnetic wave is used. As the sensor unit, a conventionally known sensor unit can be used depending on the type and material of the infrastructure member to be attached. For example, an acceleration sensor, an angular velocity sensor, an acoustic sensor, a surface acoustic wave sensor, an ultrasonic sensor, and distortion. Sensors, GPS (global position system) sensors, distance sensors (distance measuring sensors) and the like can be used. Specifically, the sensor unit can detect changes such as vibration, peeling, cracking, misalignment, tilt, and distortion of the infrastructure structure. For example, the sensor device disclosed in Japanese Patent Application Laid-Open No. 2016-194441 can be used.

Further, the sensor device may be attached to, for example, a concrete infrastructure member to detect a change of state on the surface thereof. For example, those that detect the occurrence and growth of cracks on the concrete surface, changes in the water concentration on the concrete surface, and changes in the ion concentration such as salt are used. Specifically, conventionally known sensor devices such as a conductive wire rod, an optical fiber, a fiber-impregnated plastic film, and a commercially available crack detection sensor (KZCA-A manufactured by Tokyo Sokki Kenkyusho Co., Ltd.) can be used. Further, for example, the concrete abnormality detecting member disclosed in Japanese Patent Application Laid-Open No. 2015-087351 can also be used.

3. 3. Automobiles As the automobile manufacturing method, any one of the first to third embodiments of the above-mentioned article manufacturing method can be used.

In the method of manufacturing an automobile, the first member and the second member can be used as automobile members, and both can be bonded via the first adhesive composition and the first adhesive layer.

The first member and the second member may be automobile members, and their form is not particularly limited as long as they have an adherend surface. The automobile member refers to an automobile body and an automobile part attached to the automobile body, and may be either an interior material or an exterior material. The automobile parts are not particularly limited as long as they are parts generally used in automobiles, and examples thereof include decorative members such as emblems and structural members such as pillars.

The material of the automobile member can be appropriately selected depending on the part of the automobile, and examples thereof include an inorganic material, a metal material, a ceramic material, an organic material, or a composite material or a laminated material combining these. The materials of the first member and the second member may be the same or different, and can be appropriately selected and combined. Examples of the material combination of the first member and the second member include a combination of an organic material such as ABS and CFRP and a metal, a combination of dissimilar metals such as a combination of aluminum and titanium, and the like.

4. Electronic components As the electronic components, any one of the first to third embodiments of the above-described method for manufacturing an article can be used.

In electronic parts, the above-mentioned method for manufacturing an article can be applied to, for example, fixing electronic parts such as MEMS and chips, joining substrates to each other, and the like. Further, the adhesive sheet set can be used as a die bonding film.

5. Other cases in the manufacturing method of the article of the present disclosure, in which the adhesive layer and the member are bonded, the adhesive layer and the member with the adhesive sheet are bonded, or the adhesive layers are bonded to each other while applying a shearing force to the adhesive layer, among others. , Can be used as a method for manufacturing articles that are difficult to heat or irradiate with light. Specifically, it is applied to fixing racket grips, joining golf club shafts and grips, joining fishing rod seams and grips, joining cup-shaped steel plates and hat-shaped steel plates used for automobile members, etc. be able to.

II. Laminating device First, the laminating device of the present disclosure will be described. The laminating device of the present disclosure is a laminating device for laminating a first adhesive sheet provided with a first adhesive layer and a second adhesive sheet provided with a second adhesive layer, and the first adhesive layer and the above-mentioned first adhesive layer and the second adhesive sheet are laminated. The second adhesive layer can be cured and adhered by coming into contact with each other.

Here, when the first adhesive sheet and the second adhesive sheet are laminated, as shown in FIG. 16A, the first adhesive sheet 11 and the second adhesive sheet 12 are laminated so as to overlap each other in a plan view. Is required. In particular, since the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet can be cured and adhered by contacting each other, the first adhesive sheet and the second adhesive sheet overlap each other. It is required to bond them so that the area becomes wider. Assuming that the first adhesive sheet 11 and the second adhesive sheet 12 overlap only a part in a plan view as shown in FIG. 16 (b), both adhesive sheets are laminated as shown in FIG. 16 (a). was compared to the area R _a, will be narrowed region R _b where both adhesive sheet is laminated superposed as shown in FIG. 11 (b), it is difficult to express a given adhesive in a wider area.

If it is difficult to distinguish between the first adhesive sheet and the second adhesive sheet, which of the two adhesive sheets should be placed first, and then which adhesive sheet should be laminated. There is a risk that you will not know what you are doing.

On the other hand, in the present disclosure, the above-mentioned problems can be solved by providing the stacking device for stacking the first adhesive sheet and the second adhesive sheet with a predetermined configuration. It is possible to efficiently stack the 1 adhesive sheet and the 2nd adhesive sheet. Further, by using the laminating device, it is possible to secure the positional accuracy of laminating the first adhesive sheet and the second adhesive sheet.

The laminating device of the present disclosure has two aspects. Hereinafter, each aspect will be described.

A. First Aspect of Laminating Device A first aspect of the laminating device of the present disclosure is laminating for laminating a first adhesive sheet provided with a first adhesive layer and a second adhesive sheet provided with a second adhesive layer. In the device, the first adhesive layer and the second adhesive layer can be cured and adhered by contacting each other, and the first adhesive layer of the first adhesive sheet can be adhered to the adherend. The first discharge portion and the second adhesive layer of the second adhesive sheet can be attached to the first adhesive layer of the first adhesive sheet attached to the adherend. The direction in which the first adhesive sheet is discharged by the first discharge unit is the same as the direction in which the second adhesive sheet is discharged by the second discharge unit. The first discharge portion is arranged on the upstream side of the second discharge portion along the direction in which the first adhesive sheet and the second adhesive sheet are discharged.

FIG. 17 is a schematic view showing an example of the laminating device of this embodiment. As shown in FIG. 17, the layering apparatus 100 has a first discharge portion 102a that discharges the first adhesive layer of the first adhesive sheet so that it can be attached to an adherend, and a second adhesive layer of the second adhesive sheet. Is provided with a second discharge unit 102b that can be attached to the first adhesive layer of the first adhesive sheet attached to the adherend. In addition to the first discharge section 102a and the second discharge section 102b, the stacking device 100 shown in FIG. 17 has a first holding section that holds the first adhesive sheet wound in a roll shape so that it can be unwound. The 104a and the second holding portion 104b for holding the second adhesive sheet wound in a roll shape so as to be unwindable can be provided, and the first separator arranged on one side of the first adhesive layer can be wound. This is an example including a possible first winding portion 103a and a second winding portion 103b capable of winding a second separator arranged on one side of the second adhesive layer. Furthermore, the stacking device 100 shown in FIG. 17 has a first frame portion 120a and a second discharge portion 102b for supporting the first discharge portion 102a, the first holding portion 104a, the first winding portion 103a, and the like. , A second frame portion 120b for supporting the second holding portion 104b, the second winding portion 103b, etc., and a gear for synchronizing the first holding portion 104a and the first winding portion 103a. For connecting the second auxiliary portion 107b, the first frame portion 120a, and the second frame portion 120b, which are gears for synchronizing the first auxiliary portion 107a, the second holding portion 104b, and the second winding portion 103b. This is an example having a connecting portion 130.

FIG. 18 is a schematic view of the stacking device observed from the second surface, which is the back surface of the first surface, when the observation surface of the stacking device shown in FIG. 17 described above is the first surface. In the laminating device, the first adhesive sheet and the second adhesive sheet wound in a roll shape on the second surface side shown in FIG. 18 are held by the first holding portion 104a and the second holding portion 104b, respectively, in this way. Using the held first adhesive sheet and second adhesive sheet, sticking is performed as follows. In the stacking device 100, as shown by the solid line arrow in FIG. 18, the first adhesive sheet and the second adhesive sheet are charged from the first holding portion 104a and the second holding portion 104b to the first discharging portion 102a and the second discharging portion 102b. It is sent to each and attached to the adherend. After that, as shown by the dotted line arrow in FIG. 18, the first separator and the second separator are wound and collected by the first winding unit 103a and the second winding unit 103b.

In FIGS. 17 and 18, the first winding unit 103a is arranged on the first discharging unit 102a, the first holding unit 104a is arranged on the first winding unit 103a, and the second discharging unit 102b. An example is shown in which the second winding unit 103b is arranged above and the second holding portion 104b is arranged on the second winding unit 103b. The positions of the first winding unit 103a and the first holding unit 104a, the second winding unit 103b and the second holding unit 104b are not particularly limited, and it is sufficient that each configuration can exhibit a predetermined function. Therefore, for example, as shown in FIG. 19, the first holding portion 104a may be arranged on the first discharging portion 102a, and the first winding portion 103a may be arranged on the first holding portion 104a. The second holding portion 104b may be arranged on the discharging portion 102b, and the second winding portion 103b may be arranged on the second holding portion 104b. The reference numerals not described in FIG. 19 can be the same as those in FIGS. 17 and 18.

FIG. 20 is an explanatory diagram for explaining the laminating of the first adhesive sheet and the second adhesive sheet using the laminating device. As shown in FIG. 20, the first adhesive layer 22 of the first adhesive sheet 11 discharged by the first discharge unit 102a is attached to the adherend, and then the second adhesive is discharged by the second discharge unit 102b. The second adhesive layer 24 of the sheet 12 can be attached to the first adhesive layer 22 of the first adhesive sheet 11 attached to the adherend. In FIG. 20, the first adhesive sheet 11 has a first separator 21 arranged on one side of the first adhesive layer 22, and after the first adhesive sheet 11 is discharged by the first discharge unit 102a, The first separator 21 is recovered, and the second adhesive sheet 12 also has a second separator 23 arranged on one side of the second adhesive layer 24, and the second adhesive sheet 12 is discharged by the second discharge portion 102b. An example is shown in which the second separator 23 is recovered after the adhesive is removed.

In the laminating device, the direction in which the first adhesive sheet is discharged by the first discharge portion and the direction in which the second adhesive sheet is discharged by the second discharge portion are the same, and the first discharge portion is the first adhesive. The sheet and the second adhesive sheet are arranged on the upstream side of the second discharge portion along the discharge direction. As a result, when the stacking device is moved along the surface of the adherend, the second adhesive sheet is second-bonded so as to overlap the first adhesive layer of the first adhesive sheet attached to the adherend. Layers can be pasted.

Here, it is said that the first discharge portion is arranged on the upstream side of the second discharge portion along the direction in which the first adhesive sheet and the second adhesive sheet are discharged, for example, the first discharge shown in FIG. 20. When the parts 102a and the second discharge part 102b are observed from the Y direction, as shown in FIG. 21, the first discharge part 102a and the second discharge part 102b are arranged along the traveling direction indicated by the arrow, and , It means that the first discharge unit 102a is arranged on the upstream side of the second discharge unit 102b in this traveling direction. In FIG. 21, the width _{W 2a} of the first discharge portion 102a, a width _{W 2b} of the second discharge unit 102b are the same, and a first discharge portion 102a and the second discharge portion 102b is, along the traveling direction This is an example in which they are all arranged so as to overlap.

The laminating device of this aspect can be used in the second embodiment and the fourth embodiment of the above-mentioned method for manufacturing an article. Hereinafter, the laminating device of this embodiment will be described.

1. 1. First Discharge Unit The first discharge unit can discharge the first adhesive layer of the first adhesive sheet so as to be attached to the adherend. Further, the direction in which the first adhesive sheet is discharged by the first discharge part is the same as the direction in which the second adhesive sheet is discharged by the second discharge part, and the first discharge part is the first adhesive sheet and the first discharge part. 2 The adhesive sheet is arranged on the upstream side of the second discharge portion along the discharge direction.

The first discharge portion may be a member that can attach the first adhesive layer of the first adhesive sheet to the adherend and discharge the first adhesive layer. For example, the first adhesive layer of the first adhesive sheet may be attached to the adherend. It may be a member that can be attached to and guided to the adherend, or may be a member that can attach the first adhesive layer of the first adhesive sheet to the adherend. For example, in the stacking apparatus shown in FIGS. 17 to 20, the first discharge portion is a member capable of attaching the first adhesive layer of the first adhesive sheet to the adherend.

When the first discharge portion is a member capable of attaching the first adhesive layer of the first adhesive sheet to the adherend, the first adhesive layer of the first adhesive sheet can be attached to the adherend. Can have a shape. Examples of the shape include a roll shape and a spatula shape. Above all, as shown in FIGS. 17 to 20, the shape can be a roll shape. When the first discharge portion has a roll shape, the first adhesive layer of the first adhesive sheet can be attached to the adherend by the rotation of the first discharge portion. Since the first discharge unit is not normally interlocked with other members, the rotation of the first discharge unit is not controlled by other members or the like and operates independently.

When the first discharge portion has a roll shape, a predetermined friction can be generated at the contact surface between the first discharge portion and the first adhesive sheet. Here, the first discharge portion and the contact surface with the first adhesive sheet, for example, points to the space R _m surrounded by a dotted line in FIG. 20, the first adhesive sheet 11 is disposed on one side of the first adhesive layer 22 When the first separator 21 is provided, it refers to the contact surface between the first discharge unit 102a and the first separator 21. When a predetermined friction is generated on the contact surface between the first discharge portion and the first separator, the first separator is easily peeled off from the first adhesive layer.

As a method of generating friction on the contact surface between the first discharge portion and the first separator, for example, a predetermined material is used on the surface of the first discharge portion, that is, the surface of the first discharge portion that comes into contact with the first separator. The method can be mentioned. Examples of the material used for the surface of the first discharge portion include an inorganic material such as coated diamond and coated CBN (cubic boron nitride). Further, as another material used for the surface of the first discharge part, for example, a material in which particles are dispersed and embedded in an organic material can be mentioned. As the organic material, for example, urethane rubber, nitrile rubber, chloroprene rubber, ethylene rubber, propylene rubber, silicone rubber, butyl rubber, styrene rubber, hyperon rubber, fluororubber and the like can be used. Further, for the particles, for example, copper, nickel, silver, titanium, white alumina, crushed alumina, pink alumina, green silicon carbide, black silicon carbide and the like can be used.

The size of the first discharge portion can be appropriately adjusted according to the width and the like of the first adhesive sheet used, and is not particularly limited. The first discharge portion can be large enough to allow the first adhesive layer of the first adhesive sheet to be satisfactorily attached to the adherend.

2. Second Discharge Unit The second discharge unit can discharge the second adhesive layer of the second adhesive sheet to the first adhesive layer of the first adhesive sheet attached to the adherend so as to be attached. Further, the direction in which the second adhesive sheet is discharged by the second discharge part is the same as the direction in which the first adhesive sheet is discharged by the first discharge part, and the second discharge part is the first adhesive sheet and the first. 2 The adhesive sheet is arranged on the downstream side of the first discharge portion along the discharge direction.

The second discharge portion may be a member that can attach the second adhesive layer of the second adhesive sheet to the first adhesive layer of the first adhesive sheet attached to the adherend and discharge the second adhesive layer. For example, it may be a member capable of guiding the second adhesive layer of the second adhesive sheet to the first adhesive layer of the first adhesive sheet attached to the adherend so that it can be attached to the first adhesive layer. The second adhesive layer of the sheet may be a member that can be attached to the first adhesive layer of the first adhesive sheet attached to the adherend. For example, in the stacking apparatus shown in FIGS. 17 to 20, the second discharge unit attaches the second adhesive layer of the second adhesive sheet to the first adhesive layer of the first adhesive sheet attached to the adherend. It is a member that can be used.

When the second discharge portion is a member capable of attaching the second adhesive layer of the second adhesive sheet to the first adhesive layer of the first adhesive sheet attached to the adherend, the second adhesive sheet The second adhesive layer has a shape that can be attached to the first adhesive layer of the first adhesive sheet attached to the adherend. Examples of the shape include a roll shape and a spatula shape. Above all, as shown in FIGS. 17 to 20, the shape can be a roll shape. When the second discharge portion is in a roll shape, the rotation of the second discharge portion causes the second adhesive layer of the second adhesive sheet to be attached to the first adhesive layer of the first adhesive sheet attached to the adherend. be able to. Since the second discharge unit is not interlocked with other members, the rotation of the second discharge unit is not controlled by the other members or the like and operates independently.

In the present disclosure, the second adhesive layer of the second adhesive sheet can be attached so as to overlap with the first adhesive layer of the first adhesive sheet attached to the adherend by the second discharge unit. Therefore, when the stacking device is moved along the surface of the adherend, the second discharge unit is attached to the first adhesive layer of the first adhesive sheet attached to the adherend to the second adhesive sheet. The two adhesive layers can be arranged so as to overlap each other. Here, "overlapping" means that when the laminating and pasting device is moved along the surface of the adherend and the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet are adhered to each other. The second adhesive layer of the second adhesive sheet overlaps in a part of the area of the first adhesive layer of the first adhesive sheet, or covers the entire area of the first adhesive layer of the first adhesive sheet. Refers to overlapping. Above all, it can be the latter. This is because the first adhesive layer of the first adhesive sheet can be overlapped with the second adhesive layer of the second adhesive sheet in a wider area. The overlap of the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet can be confirmed, for example, by observing from the Y direction of FIG. 20.

Other explanations of the second discharge unit can be the same as those of the first discharge unit described above.

3. 3. The first holding portion and the second holding portion stacking device has a first holding portion that holds the first adhesive sheet wound in a roll shape so as to be unwound, and a second adhesive sheet wound in a roll shape. It can have a second holding portion that holds it so that it can be unwound. Since the first adhesive sheet and the second adhesive sheet are wound in a roll shape, they can be stored in a small space.

The first holding portion is a member capable of holding the first adhesive sheet and unwinding the first adhesive sheet to the first discharging portion. Further, the second holding portion is a member capable of holding the second adhesive sheet and unwinding the second adhesive sheet to the second discharging portion.

The first holding portion and the second holding portion may be in a roll shape, for example, as in the first holding portion 104a and the second holding portion 104b shown in FIG. This is because the first adhesive sheet and the second adhesive sheet can be unwound satisfactorily.

When the first holding portion has a roll shape, it can have a gear as shown in FIG. In the case where the laminating device has a first winding portion for winding the first separator from the first adhesive sheet and the first winding portion has a gear, the gear of the first holding portion is the first. When the gear of the winding portion is rotated, the first adhesive sheet can be satisfactorily attached for the following reasons. That is, by holding the first adhesive sheet wound in a roll shape on the first holding portion so that the gear and the axis of the first holding portion are the same, the first adhesive sheet from the first holding portion is held. And the winding of the first separator by the first winding unit can be performed in conjunction with each other. For this reason, it is possible to satisfactorily attach the first adhesive sheet. The winding of the first separator here can be performed by a roll held so that the gear and the axis of the first winding portion are the same.

When the first holding portion has a roll shape and has a gear, the first holding portion is a first adhesive sheet wound in a roll shape so that the axis of the first holding portion is the same as that of the gear. The size of the gear held by the first holding portion, specifically, the radius of the gear held by the first holding portion can be appropriately adjusted according to the unwinding amount of the first adhesive sheet. For example, when the laminating device has a first winding portion, the unwinding amount of the first adhesive sheet and the winding amount of the first separator can always be constant. Therefore, when the laminating device has the first winding portion, the radius of the first holding portion can be appropriately adjusted according to the radius of the gear possessed by the first winding portion. If the radius of the gear of the first take-up portion is larger than the radius of the gear of the first holding portion, the sticking of the first adhesive sheet becomes lighter, and the operation of the laminating sticking device can be lightened.

Further, when the second holding portion has a roll shape, it can have a gear as shown in FIG. The case where the second holding portion has a gear can be the same as the case where the first holding portion has a gear.

4. The first take-up section and the second take-up section The lap-pasting device may have a first take-up section capable of taking up the first separator from the first adhesive sheet. When the first adhesive sheet includes a first separator arranged on one side of the first adhesive layer and the second adhesive sheet includes a second separator arranged on one side of the second adhesive layer, the first separator By winding only the second adhesive sheet, the first adhesive sheet and the second adhesive sheet after being laminated by the second separator can be protected.

Further, the laminating and pasting device can have the first winding unit and the second winding unit capable of winding the second separator from the second adhesive sheet. When the first adhesive sheet includes a first separator arranged on one side of the first adhesive layer and the second adhesive sheet includes a second separator arranged on one side of the second adhesive layer, the first separator By winding both the second separator and the second separator, the work efficiency can be improved. Further, when the laminating device is used in the fourth embodiment of the above-mentioned method for manufacturing an article, it is possible to prevent forgetting to peel off the second separator.

The first winding unit has a gear like the first winding unit 103a shown in FIG. 17, and the roll can be held so that the axis is the same as the gear. Since the first winding portion can be synchronized with the first holding portion, the unwinding of the first adhesive sheet and the winding of the first separator are interlocked, and the first adhesive sheet and the second adhesive sheet are laminated. This is because it can be performed well.

When the first winding part has a gear and the roll is held so that the axis is the same as the gear, the size of the gear held by the first winding part, specifically, the first winding The radius of the gear held by the take-up portion can be appropriately adjusted according to the winding amount of the first separator wound by the roll held so that the axis is the same as that of the gear. For example, in the laminating apparatus, the unwinding amount of the first adhesive sheet and the winding amount of the first separator can always be constant. Therefore, the radius of the gear of the first take-up portion in the lap-pasting device can be appropriately adjusted according to the radius of the gear of the first holding portion. If the radius of the gear of the first take-up portion is larger than the radius of the gear of the first holding portion, the sticking of the first adhesive sheet becomes lighter, and the operation of the laminating sticking device can be lightened.

Further, the second winding unit has a gear like the second winding unit 103b shown in FIG. 17, and the roll can be held so that the axis is the same as the gear. The case where the second winding part has a gear can be the same as the case where the first winding part has a gear.

5. The pressing portion stacking device may have a pressing portion that presses the laminated first adhesive sheet and the second adhesive sheet. By pressing the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet in contact with each other, the first adhesive layer and the second adhesive layer can be brought into close contact with each other to accelerate the curing reaction. Because it can be done.

The pressing portion is a member that presses the laminated first adhesive sheet and the second adhesive sheet. Therefore, the pressing portion can be a member that presses the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet to such an extent that they are sufficiently adhered to each other. Here, the degree to which the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet are sufficiently adhered is, for example, the degree to which the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet are sufficiently adhered to each other. The degree to which air or the like does not enter between the adhesive layer and the first adhesive sheet and the second adhesive sheet are not cut, and is appropriately adjusted according to the type of the first adhesive sheet and the second adhesive sheet and the adherend. Therefore, it is not defined by specific pressure.

The pressing portion can have a shape capable of pressing the laminated first adhesive sheet and the second adhesive sheet. Examples of the shape include a roll shape and a spatula shape. Above all, the shape can be a roll shape. When the pressing portion has a roll shape, the overlapped first adhesive sheet and the second adhesive sheet can be pressed by the rotation of the pressing portion. Since the pressing portion is not normally interlocked with other members, the rotation of the pressing portion is not controlled by the other members or the like and operates independently.

The size of the pressing portion can be appropriately adjusted according to the widths of the first adhesive sheet and the second adhesive sheet used, and is not particularly limited. The pressing portion can be large enough to satisfactorily press the first adhesive sheet and the second adhesive sheet.

In the present disclosure, the second discharging portion may also serve as a pressing portion, and the pressing portion is arranged on the downstream side of the second discharging portion along the direction in which the first adhesive sheet and the second adhesive sheet are discharged. It may have been done.

6. Heating unit The stacking device may have a heating unit that heats the laminated first adhesive sheet and the second adhesive sheet. By heating the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet in contact with each other, the viscosities of the first adhesive layer and the second adhesive layer are lowered, and the first adhesive layer is formed. This is because the adhesion of the second adhesive layer can be enhanced and the curing reaction can be promoted. Further, even when the first adhesive layer and the second adhesive layer do not have adhesiveness or the adhesiveness is low, the first adhesive layer and the second adhesive layer are heated to develop adhesiveness or adhesiveness. Can be enhanced, and the adhesion between the first adhesive layer and the second adhesive layer can be enhanced.

The heating portion may be any member as long as it can heat the laminated first adhesive sheet and the second adhesive sheet. For example, a thermal head, a heat roll, a hot air heater, a hot stamp, a laser light source, and ultraviolet light. Examples include lamps, infrared light lamps, IH heaters, friction bonding heads, ultrasonic generators, electric heaters and the like. Above all, since the transferability to the adherend is good, the heating portion can be a heat roll.

The heating temperature in the heating unit can be the same as the heating temperature in the above-mentioned method for manufacturing an article. In the present disclosure, since the curing reaction may be promoted by heating, the heating conditions may be low temperature and short time as compared with, for example, a thermosetting adhesive.

The heating portion is arranged on the downstream side of the second discharge portion along the direction in which the first adhesive sheet and the second adhesive sheet are discharged.

7. Irradiation unit The stacking device may have an irradiation unit that irradiates the laminated first adhesive sheet and the second adhesive sheet with light. For example, when at least one of the first adhesive layer and the second adhesive layer has a component activated by light, the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet are brought into contact with each other. By irradiating light in this state, the curing reaction can be promoted. Further, in the above case, even when the first adhesive layer and the second adhesive layer do not have adhesiveness or the adhesiveness is low, by irradiating the first adhesive layer and the second adhesive layer with light. , The adhesiveness can be developed or the adhesiveness can be enhanced, and the adhesiveness of the first adhesive layer and the second adhesive layer can be enhanced.

The irradiation unit may be any member as long as it can irradiate the laminated first adhesive sheet and the second adhesive sheet with light. For example, an ultraviolet light lamp, a black light, a high-pressure mercury lamp, an LED light, a metal halide lamp, or the like. Can be mentioned.

The irradiation unit is arranged on the downstream side of the second discharge portion along the direction in which the first adhesive sheet and the second adhesive sheet are discharged.

8. The handle part stacking device attaches the first adhesive sheet and the second adhesive sheet by the first discharge part and the second discharge part by applying a force in the direction in which the first adhesive sheet and the second adhesive sheet are discharged. It is possible to have a handle portion arranged at a position where the first adhesive sheet and the second adhesive sheet can be laminated.

Since the laminating device has a handle portion, the laminating device can be manually used. Therefore, the first adhesive sheet and the second adhesive sheet can be applied to various adherend surfaces, such as when the adherend surface of the adherend is a horizontal plane, a vertical plane, a normal plane, or an inclined surface. The degree of freedom is improved compared to the desktop device.

Overlapping bonding apparatus, for example, the handle region R ₅ shown in FIG. 17, can be provided with a handle portion 105 shown in FIG. 22. Note that FIG. 23 is an actual photograph of the laminating device having the handle portion 105, and FIG. 24 is a photograph when the laminating device having the handle portion 105 is actually used. In FIG. 24, the stacking device is moved in the direction of the arrow to attach the first adhesive sheet and the second adhesive sheet.

The handle portion may have a handle portion 151, for example, as shown in FIGS. 25 (a) and 25 (b). As shown in FIG. 25A, when the handle portion 105 is provided with the handle portion 151, the handle portion 151 can be grasped by a hand to move the stacking device. Further, as shown in FIG. 25B, when the handle portion 105 is provided with the handle portion 151, it can exert a function as a stopper so that the hand holding the handle portion 105 does not come off. it can. The handle portion provided on the handle portion can be provided at various angles, lengths, and shapes as needed, and is not particularly limited.

For example, as shown in FIG. 26, the handle portion 105 may be provided in a direction obliquely perpendicular to the adherend surface from the handle portion region. In this case, by increasing the length of the handle portion 105 and providing the handle portion 151 at the tip of the handle portion 105, the user using the stacking device holds the handle portion 151 by hand and stands up. The laminating device can be moved in the state. Therefore, the user can work in a comfortable posture, and the work efficiency can be improved.

The material used for the handle portion can be a material having enough strength to allow the laminating device to be moved by the handle portion. For example, wood, leather, aggregate, organic material, rubber material and the like can be mentioned. In addition, the handle portion may include a reinforcing material in order to increase the strength. Examples of the reinforcing material include organic materials and steel materials.

The size and shape of the handle portion can be appropriately adjusted according to the usage of the laminating device, and is not particularly limited as long as the laminating device can be moved.

Further, the material of the handle portion provided in the handle portion can be the same as the material of the handle portion described above. Further, the size and shape of the handle portion can be appropriately adjusted according to the usage of the stacking device, and is not particularly limited as long as the stacking device can be moved.

9. In the first cutting portion and the second cutting portion stacking apparatus, after the first adhesive sheet is attached, the first adhesive sheet, specifically, the first cut portion for cutting the first adhesive layer, and the second adhesive sheet. A second adhesive sheet, specifically, a second cutting portion for cutting the second adhesive layer can be provided after the second adhesive sheet is attached.

In the stacking device, for example, as shown in FIG. 17, a first cutting portion 106a on the downstream side of the first discharging portion 102a can be provided, and a second cutting portion 106b is provided on the downstream side of the second discharging portion 102b. be able to. By having the first cutting portion 106a and the second cutting portion 106b, only the first adhesive layer and the second adhesive layer can be cut with a cutter or the like after the first separator and the second separator are wound up. , Work efficiency can be improved.

The first cut portion and the second cut portion may be any member as long as they can cut the first adhesive layer and the second adhesive layer, and for example, steel material, stainless steel material, powder steel, clad material, ceramic, titanium and the like may be used. Can be mentioned. Examples of the shapes of the first cut portion and the second cut portion include a stepped shape, a clam shape, a main blade attachment shape, a single blade shape, and the like.

Examples of the method of cutting the first adhesive layer and the second adhesive layer by the first cut portion and the second cut portion include a push-cut method and a pull-cut method. As a specific example, like a commercially available cellophane tape cutter, the first cut portion and the second cut portion using steel as a material have a stepped shape, and the blades having a stepped shape have alternating peaks and valleys. There is a method of cutting and cutting from the mountain portion by arranging it in the first adhesive layer and pressing it against the first adhesive layer and the second adhesive layer.

10. Other members The laminating device may have other members, if necessary, in addition to the above-mentioned members. Other members include, for example, as shown in FIG. 17, a first frame portion 120a for supporting the first discharge portion 102a, the first holding portion 104a, the first winding portion 103a, and the like, and a second discharge portion. Examples thereof include a second frame portion 120b for supporting 102b, a second holding portion 104b, a second winding portion 103b, and the like. Further, in order to provide a distance between the first auxiliary portion 107a for providing a distance between the first holding portion 104a and the first winding portion 103a, and a distance between the second holding portion 104b and the second winding portion 103b. The second auxiliary part 107b of the above is mentioned. Further, a connecting portion 130 for connecting the first frame portion 120a and the second frame portion 120b can be mentioned.

The first frame portion is a member that supports each member such as the first discharge portion, the first holding portion, and the first winding portion. The second frame portion is a member that supports each member such as the second discharge portion, the second holding portion, and the second winding portion. Therefore, the materials of the first frame portion and the second frame portion are not particularly limited as long as they can support each of the above-mentioned members, and can be materials having a predetermined strength.

The first auxiliary portion is a member for providing a distance between the first holding portion and the first winding portion. Further, the second auxiliary portion is a member for providing a distance between the second holding portion and the second winding portion. Examples of the shape of the first auxiliary portion and the second auxiliary portion include a roll shape, and as shown in FIG. 17, a plurality of the first auxiliary portion 107a and the second auxiliary portion 107b can be provided. In the example shown in FIG. 17, the first auxiliary portion 107a and the second auxiliary portion 107b have a tooth profile around them like a gear, and the first auxiliary portion 107a has a first holding portion 104a and a first winding portion 103a. The second auxiliary unit 107b is rotating the second holding unit 104b and the second winding unit 103b.

The connecting portion is a member that connects the first frame portion and the second frame portion. Further, when the laminating device has a handle portion, the handle portion can be installed at the connecting portion. Here, as shown in FIG. 17, assuming that the point where the first frame portion 120a and the connecting portion 130 are joined is a joining point 131a, the joining point 131a is the center of the first discharge portion 102a and the first adhesive sheet. It can be located on a line perpendicular to the adherend surface. Similarly, assuming that the point where the second frame portion 120b and the connecting portion 130 are joined is the joining point 131b, the joining point 131b is perpendicular to the center of the second discharge portion 102b and the adherend surface of the second adhesive sheet. Can be located on the line. This is because when the handle portion is provided in the connecting portion, a predetermined pressure can be applied to the adherend surface from the first discharge portion and the second discharge portion by applying pressure from the handle portion to the adherend surface. At this time, in order to uniformly apply pressure to the first discharge portion and the second discharge portion, a handle portion can be provided at the center of the connecting portion.

The centers of the first discharging portion 102a, the first winding portion 103a, and the first holding portion 104a can be arranged so as to be in a straight line. Further, the centers of the second discharging portion 102b, the second winding portion 103b, and the second holding portion 104b can be arranged so as to be in a straight line. With such an arrangement, a predetermined pressure can be applied to the first discharge portion and the second discharge portion, and the first tape and the second tape can be satisfactorily attached.

11. 1st Adhesive Sheet and 2nd Adhesive Sheet The 1st adhesive sheet and the 2nd adhesive sheet can be the same as the 1st adhesive sheet and the 2nd adhesive sheet used in the above-mentioned method for manufacturing an article.

Above all, the first adhesive layer of the first adhesive sheet to be attached to the adherend side can be weakly adhesive or medium adhesive. This is because by making the first adhesive layer weakly adhesive or medium-adhesive, it can be easily peeled off and reattached.

Further, the second adhesive layer of the second adhesive sheet may be weakly adhesive or medium adhesive. By making the second adhesive layer weakly adhesive or medium-adhesive, for example, another adherend can be placed on the second adhesive sheet side of the adherend to which the first adhesive sheet and the second adhesive sheet are attached. In the case of bonding, another adherend may be moved and bonded to the surface of the adherend to which the first adhesive sheet and the second adhesive sheet are attached on the second adhesive layer side. The adherend to which the first adhesive sheet and the second adhesive sheet are attached can be moved and attached to the adherend.

B. Second Aspect of Laminating Device A second aspect of the laminating device of the present disclosure is laminating for laminating a first adhesive sheet provided with a first adhesive layer and a second adhesive sheet provided with a second adhesive layer. In the device, the first adhesive layer and the second adhesive layer can be cured and adhered by contacting each other, and the first adhesive layer and the second adhesive of the first adhesive sheet can be adhered to each other. The first adhesive sheet and the second adhesive sheet are overlapped so that the overlapping portion of the sheet on which the second adhesive layer is overlapped and the first adhesive layer of the first adhesive sheet are attached to the adherend. It has a discharge unit for discharging the adhesive sheet.

FIG. 27 is a schematic view showing an example of the laminating device of this embodiment. As shown in FIG. 27, the lap-pasting device 100 overlaps the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet with the overlapping portions 108a and 108b, and the first adhesive layer is overlapped with each other. The discharge unit 102 is provided so that the sheet and the second adhesive sheet can be attached to the adherend and discharged. In addition to the overlapping portions 108a and 108b and the discharging portion 102, the stacking apparatus 100 shown in FIG. 27 has a first holding portion 104a that holds the first adhesive sheet wound in a roll shape so that it can be unwound. , And a second holding portion 104b that holds the second adhesive sheet wound in a roll shape so that it can be unwound, and further, it is possible to wind the first separator arranged on one side of the first adhesive layer. This is an example including a first winding portion 103a and a second winding portion 103b capable of winding a second separator arranged on one side of the second adhesive layer. Furthermore, the stacking device 100 shown in FIG. 27 includes a stacking portion 108a, 108b, a discharge portion 102, a first holding portion 104a, a second holding portion 104b, a first winding portion 103a, a second winding portion 103b, and the like. The first auxiliary portion 107a, the second holding portion 104b, and the second winding, which are gears for synchronizing the first holding portion 104a and the first winding portion 103a, and having a frame portion 120 for supporting the first holding portion 104a and the first winding portion 103a. This is an example of having a second auxiliary portion 107b, which is a gear for synchronizing with the taking portion 103b. In the laminating device 100, the first adhesive sheet and the second adhesive sheet wound in a roll shape are held by the first holding portion 104a and the second holding portion 104b, respectively, and the first adhesive sheet and the second adhesive sheet held in this way are held. Using the second adhesive sheet, sticking is performed as follows. In the stacking device 100, as shown by the solid line arrow in FIG. 27, the first adhesive sheet and the second adhesive sheet are transferred from the first holding portion 104a and the second holding portion 104b to the overlapping portions 108a, 108b and the discharging portion 102. Is sent and attached to the adherend. After that, as shown by the dotted line arrow in FIG. 27, the first separator and the second separator are wound and collected by the first winding unit 103a and the second winding unit 103b.

In FIG. 27, the first winding portion 103a is arranged on the overlapping portions 108a and 108b, the first holding portion 104a is arranged on the first winding portion 103a, and the first winding portion 104a is arranged on the overlapping portions 108a and 108b. An example is shown in which the second winding unit 103b is arranged and the second holding unit 104b is arranged on the second winding unit 103b. The positions of the first winding portion and the first holding portion, and the second winding portion and the second holding portion are not particularly limited, and it is sufficient that each configuration can exhibit a predetermined function. Therefore, for example, the first holding portion may be arranged on the overlapping portion and the first winding portion may be arranged on the first holding portion, and the second holding portion may be arranged on the overlapping portion. 2 The second take-up portion may be arranged on the holding portion.

FIG. 28 is an explanatory diagram for explaining the laminating of the first adhesive sheet and the second adhesive sheet using the laminating device. As shown in FIG. 28, the first adhesive layer 22 of the first adhesive sheet 11 and the second adhesive layer 24 of the second adhesive sheet 12 are overlapped by the overlapping portions 108a and 108b, and the first adhesive layer is overlapped. The 22 and the second adhesive layer 24 are attached to the adherend so that the first adhesive layer 22 is on the adherend side. In FIG. 28, the first adhesive sheet 11 has a first separator 21 arranged on one side of the first adhesive layer 22, and the first adhesive sheet 11 is a second adhesive sheet due to the overlapping portions 108a and 108b. After being overlapped with 12, the first separator 21 is recovered, and the second adhesive sheet 12 also has a second separator 23 arranged on one side of the second adhesive layer 24, and the overlapping portion 108a, An example is shown in which the second separator 23 is recovered after the second adhesive sheet 12 is overlapped with the first adhesive sheet 11 by 108b.

The layering device of this embodiment can be used in the third and fifth embodiments of the above-mentioned method for manufacturing an article. Hereinafter, the laminating device of this embodiment will be described.

1. 1. Overlapping portion The overlapping portion can overlap the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet.

The overlapped portion can have a shape capable of superimposing the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet. Examples of the shape include a roll shape and a spatula shape. Above all, as shown in FIGS. 27 and 28, the shape can be a roll shape. When the overlapped portion has a roll shape, the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet can be overlapped by the rotation of the overlapped portion. Since the overlapping portion is not normally interlocked with other members, the rotation of the overlapping portion is not controlled by other members or the like and operates independently.

When the overlapped portion has a roll shape, a predetermined friction can be generated at the contact surface between the overlapped portion and the first adhesive sheet. Here, the overlapping portion and the contact surface with the first adhesive sheet, for example, points to the space R _m surrounded by a dotted line in FIG. 28, the first adhesive sheet 11 is disposed on one side of the first adhesive layer 22 When the first separator 21 is provided, it refers to the contact surface between the overlapping portion 108a and the first separator 21. When a predetermined friction is generated on the contact surface between the overlapped portion and the first separator, the first separator is easily peeled off from the first adhesive layer.

As a method of generating friction on the contact surface between the overlapping portion and the first separator, for example, a method of using a predetermined material on the surface of the overlapping portion, that is, the surface of the overlapping portion in contact with the first separator can be mentioned. Be done. The material used for the surface of the overlapping portion can be the same as the material used for the surface of the first discharging portion of the first aspect described above.

Further, when the overlapped portion has a roll shape, a predetermined friction can be generated on the contact surface between the overlapped portion and the second adhesive sheet. The case where friction occurs on the contact surface between the overlapped portion and the second adhesive sheet can be the same as the case where friction occurs on the contact surface between the overlapped portion and the first adhesive sheet.

The size of the overlapped portion can be appropriately adjusted according to the widths of the first adhesive sheet and the second adhesive sheet used, and is not particularly limited. The overlapped portion can be large enough to allow the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet to be satisfactorily overlapped.

2. Discharge section The discharge section can discharge the first adhesive sheet and the second adhesive sheet that have been overlapped so that the first adhesive layer of the first adhesive sheet is attached to the adherend.

The discharge portion may be any member as long as it can be attached to the adherend and can discharge the overlapped first adhesive sheet and the second adhesive sheet. For example, the overlapped first adhesive sheet and the second adhesive sheet can be discharged. It may be a member capable of guiding the adhesive sheet so as to be attached to the adherend, and is a member capable of adhering the overlapped first adhesive sheet and the second adhesive sheet to the adherend. May be good. For example, in the stacking apparatus shown in FIGS. 27 and 28, the discharge unit is a member capable of sticking the stacked first adhesive sheet and the second adhesive sheet to the adherend.

When the discharge portion is a member capable of attaching the overlapped first adhesive sheet and the second adhesive sheet to the adherend, the overlapped first adhesive sheet and the second adhesive sheet are attached to the adherend. It can have a shape that can be attached. Examples of the shape include a roll shape and a spatula shape. Above all, as shown in FIGS. 27 and 28, the shape can be a roll shape. When the discharge portion has a roll shape, the overlapped first adhesive sheet and the second adhesive sheet can be attached to the adherend by the rotation of the discharge portion. Since the discharge unit is not normally linked with other members, the rotation of the discharge unit is not controlled by the other members or the like and operates independently.

The size of the discharge portion can be appropriately adjusted according to the widths of the first adhesive sheet and the second adhesive sheet used, and is not particularly limited. The discharge portion can be large enough to allow the overlapped first adhesive sheet and the second adhesive sheet to be satisfactorily attached to the adherend.

3. 3. The first holding portion and the second holding portion stacking device has a first holding portion that holds the first adhesive sheet wound in a roll shape so as to be unwound, and a second adhesive sheet wound in a roll shape. It can have a second holding portion that holds it so that it can be unwound. The first holding portion and the second holding portion can be the same as those in the first aspect described above.

4. The first take-up section and the second take-up section The lap-pasting device may have a first take-up section capable of taking up the first separator from the first adhesive sheet. Further, the laminating and pasting device can have the first winding unit and the second winding unit capable of winding the second separator from the second adhesive sheet. The first winding section and the second winding section can be the same as those in the first aspect described above.

5. The pressing portion stacking device may have a pressing portion that presses the laminated first adhesive sheet and the second adhesive sheet. The pressing portion can be the same as in the first aspect described above.

In the present disclosure, the overlapping portion may also serve as a pressing portion, the discharging portion may also serve as a pressing portion, and the first adhesive sheet and the second adhesive sheet are discharged along the discharge direction. The pressing portion may be arranged on the downstream side of the portion.

6. Heating unit The stacking device may have a heating unit that heats the laminated first adhesive sheet and the second adhesive sheet. The heating unit can be the same as in the first aspect described above.

7. Irradiation unit The stacking device may have an irradiation unit that irradiates the laminated first adhesive sheet and the second adhesive sheet with light. The irradiation unit can be the same as in the first aspect described above.

8. The handle part stacking device can attach the first adhesive sheet and the second adhesive sheet by the discharging part by applying a force in the direction in which the first adhesive sheet and the second adhesive sheet are discharged, and the first adhesive sheet can be attached. It is possible to have a handle portion arranged at a position where the sheet and the second adhesive sheet can be laminated. The handle portion can be the same as that of the first aspect described above.

9. After the first adhesive sheet and the second adhesive sheet are attached, the cut portion layering apparatus has the first adhesive sheet, specifically, the first adhesive layer, and the second adhesive sheet, specifically, the second adhesive layer. It can have a cutting portion for cutting and. The cut portion can be the same as the first cut portion and the second cut portion of the first aspect described above.

10. Other members The laminating device may have other members, if necessary, in addition to the above-mentioned members. The other members may be the same as those in the first aspect described above.

The present invention is not limited to the above embodiment. The above embodiment is an example, and any one having substantially the same configuration as the technical idea described in the claims of the present invention and exhibiting the same effect and effect is the present invention. It is included in the technical scope of the invention.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

[material]
Table 1 shows the details of each component used in the first adhesive composition and the second adhesive composition.

[Examples 1 to 10]
1. 1. First preparation step A polyester film whose one side is peeled with a silicone-based release agent (film thickness: 38 μm, manufactured by Tohcello Corporation, trade name: SP-PET-03, hereinafter referred to as the first separator A). The first adhesive composition having the composition composition shown in Table 2 below was applied onto the peeling-treated surface using an applicator so that the thickness after coating was 75 μm, respectively, and 80 in a drying oven. It was dried at ° C. for 2 minutes to form a first adhesive layer.

Next, a polyester film (thickness: 38 μm, manufactured by Tohcello Co., Ltd., trade name: SP-PET-01, hereinafter referred to as the first separator B) obtained by peeling one side with a silicone-based release agent is applied. The peeled surface was overlapped with the first adhesive layer so as to face the first adhesive layer, and pressed with a 2 kg roller. As a result, a first adhesive sheet in which the first separators A and B were arranged on both sides of the first adhesive layer was obtained.

2. Second preparation step As the second separator B, the same one as the first separator B is used, and the thickness of the second adhesive composition having the composition composition shown in Table 2 below is 25 μm after coating on the peeling surface. It was applied using an applicator so as to be, and dried in a drying oven at 80 ° C. for 2 minutes to form a second adhesive layer. Next, as the second separator A, the same one as the first separator A was used, and the peeling-treated surface was overlapped so as to face the second adhesive layer and pressed with a 2 kg roller. As a result, a second adhesive sheet in which the second separators A and B were arranged on both sides of the second adhesive layer was obtained.

3. 3. Laminating process The first adhesive sheet is cut to a length of 25 mm and a width of 12.5 mm, the first separator B is peeled off to expose the first adhesive layer, and the first member (hot-dip galvanized steel sheet, JIS G3302 / SGCC) is exposed. A member with a first adhesive sheet was prepared by sticking it on the tip portion of a standard product (length 100 mm, width 25 mm, thickness 1.5 mm). Further, the second adhesive sheet is cut to the same size as the first adhesive sheet, the second separator B is peeled off to expose the second adhesive layer, and the second adhesive sheet is attached to the tip of the second member (same as the first member). A second member with an adhesive sheet was produced.

The other first separator and the second separator of the member with the first adhesive sheet and the member with the second adhesive sheet are peeled off to expose the first adhesive layer and the second adhesive layer, respectively, and the adhesive layers are lengthened to each other. They were bonded so as to have an adhesive area of 25 mm and a width of 12.5 mm. After the members with the adhesive sheets were temporarily fixed to each other, a load of 3 kg was applied to the temporarily fixed portion and cured at 23 ° C. in a 50% atmosphere for 7 days or 1 month to obtain an article. In addition, after temporarily fixing the members of each adhesive sheet, a sample for measuring strength when heat-cured by heating at 150 ° C. for 30 minutes with a load of 3 kg applied on the temporarily fixed portion. Was also prepared separately.

[Comparative Example 1]
An acrylic double-sided adhesive tape (trade name: Y-4180 manufactured by 3M Ltd., containing an acrylic adhesive) was attached to the first member, the separator on one side of the double-sided adhesive tape was peeled off, and the second member was attached. ..

[Evaluation 1]
(1) Adhesive strength (tensile shear strength)
Both ends of the obtained article were fixed to a Tencilon universal material tester (RTF-1350, manufactured by A & D Co., Ltd.) in an environment of 23 ° C. and 50% RH, and pulled at 10 mm / min to provide tensile shear strength. Was measured, and the value was taken as the adhesive strength (JIS K6850: 1999 (adhesive-rigid adherend tensile shear adhesive strength test method) compliant method). Specifically, the measurement was carried out by the method described in the section of the above-mentioned method for manufacturing an article.

(2) Curability After measuring the adhesive strength, the fracture surface was confirmed with the index finger, and if no tack remained, it was marked as ◯, and if it remained, it was marked as x.

(3) Adhesive The first adhesive sheet is cut into a size of 25.4 mm in length and 150 mm in width, the first separator B is peeled off, and a PET film (A4100 manufactured by Toyobo Co., Ltd.) is placed on the exposed first adhesive layer. Was bonded using a manual roller. After that, the first separator A is peeled off, and a SUS plate (304BA, adherent surface: polished surface, sample: 25.4 mm in length, 150 mm in width) is bonded to the exposed first adhesive layer using a manual roller. It was. After that, the first adhesive layer with the PET film was peeled off by hand from the SUS plate by about 20 mm, and using a tensile tester (manufactured by A & D Co., Ltd., model number: RTF-1150H), JIS Z0237: 2009. (Adhesive tape / adhesive sheet test method) and method 1 of adhesive strength test method (temperature 23 ° C, humidity 50%, test method of peeling tape and sheet 180 ° to stainless steel test plate) (tensile) The adhesive strength (N / inch) of the first adhesive layer to the SUS plate surface was measured at a speed: 300 mm / min, a peeling distance: 150 mm, and a peeling angle: 180 °). The adhesive strength of the second adhesive layer of the second adhesive sheet was also measured by the same method as described above. When the adhesive strength was 0.05 N / 25 mm or more, it was evaluated as ◯, and when it was less than 0.05 N / 25 mm, it was evaluated as x. The results are shown in Table 2.

[Evaluation 1 consideration]
From the results of Examples 1 to 10 and Comparative Example 1, it was suggested that the non-curable adhesive composition had a low cohesive force, so that the shear strength was low and could not withstand heating. In addition, the results of Examples 1 to 10 suggested the following. That is, when Examples 1 and 2 were compared, the larger the amount of the EA-BA-AN polymer (composition E), the higher the toughness and the stronger the tendency. Further, from the comparison of Examples 1, 3 and 4, when the amount of the solid (polymer) epoxy compound (composition H) decreases, the strength tends to decrease slightly because it becomes hard and brittle as a whole, but on the contrary, it is liquid. Even if the amount of the (low molecular weight) epoxy compound (composition A) is reduced, the components contained in the first adhesive layer and the second adhesive layer after bonding do not diffuse well, and the room temperature curability tends to decrease. It was. However, even in this case, heating promoted diffusion and increased the strength. Comparing Examples 5 to 10, by adding an acrylic triblock copolymer (composition C), compatibility and toughness are increased, and room temperature curability (especially, see the result of shear strength of curing after 7 days). Excellent for. At this time, as the amount of the acrylic triblock copolymer added is increased, the diffusibility of the components contained in the first adhesive layer and the second adhesive layer decreases, so that the room temperature curability tends to decrease, but the toughness tends to decrease. Is improved and the strength after heating is particularly improved.

[Example 11]
1. 1. First Preparation Step Using the same first separator A as in Example 1, apply the first adhesive composition having the composition shown in Table 3 below on the peeling surface so that the thickness after coating is 75 μm. And dried in a drying oven at 80 ° C. for 2 minutes to form a first adhesive layer, and a first adhesive sheet was obtained.

Using a plate material (MDF) having a thickness of 3 mm assuming a flooring material for a residence, the MDF and the first adhesive layer of the first adhesive sheet were overlapped so as to face each other, and pressed with a 2 kg roller. As a result, a building material with a first adhesive sheet in which the first adhesive sheet was arranged on one side of the MDF was obtained.

2. Second Preparation Step Using the same second separator A as in Example 1, apply the second adhesive composition having the composition shown in Table 3 below on the peeling surface so that the thickness after coating is 25 μm. And dried in a drying oven at 80 ° C. for 2 minutes to form a second adhesive layer. Next, using the same second separator A, the peeling surface is overlapped so as to face the second adhesive layer and pressed with a 2 kg roller, and the second separator A is arranged on both sides of the second adhesive layer. A second adhesive sheet was obtained.

Using an iron plate (hot-dip galvanized steel plate, 1.5 mm thick) that imitates a floor, one of the second separators A provided on the second adhesive sheet is peeled off to expose the second adhesive layer, and the second adhesive layer is exposed. And the above iron plate were glued together with fingers. As a result, a building material with a second adhesive sheet in which the second adhesive sheet was arranged on one side of the iron plate was obtained.

3. 3. Laminating process The first separator A and the second separator B of the building material with the first adhesive sheet and the building material with the second adhesive sheet are peeled off, and the first adhesive layer and the second adhesive layer are exposed and bonded, respectively, to form a building article. Got According to the method of Example 11, it was confirmed that the MDF and the iron plate can be easily bonded together.

[Comparative Example 3]
As the main agent, a silicone elastomer (trade name: KE-66 manufactured by Shin-Etsu Chemical Co., Ltd.) and a curing agent CAT-RC (manufactured by Shin-Etsu Chemical Co., Ltd.) are mixed in a weight ratio of main agent: curing agent = 100: 2. A one-component liquid-type moisture-curable adhesive (hereinafter, may be simply referred to as a one-component curable adhesive) was prepared. A one-component curable adhesive was applied on one side of the MDF used in Example 11, and the iron plate used in Example 1 was attached to the coated surface to obtain a building article. In Comparative Example 3, the mixed preparation of the one-component curable adhesive was complicated, and when the one-component curable adhesive was applied, it was confirmed that the liquid squeezed out from the MDF.

[Comparative Example 4]
The double-sided adhesive tape used in Comparative Example 1 was attached to the same iron plate as in Example 11, the separator on one side of the double-sided adhesive tape was peeled off, and the same MDF as in Example 11 was attached to obtain a building article. In Comparative Example 4, since each building material was simply bonded via the double-sided adhesive tape, the construction was easy.

[Evaluation 2]
1. 1. Tensile Shear Strength An evaluation sample was prepared by the following method, and the tensile shear strength was measured for each evaluation sample. The MDF used for preparing the evaluation sample was all the same as that used in Example 11. The tensile shear strength was performed under the same conditions as in Evaluation 1.

(Evaluation Example 1)
One of the second separators A of the second adhesive sheet produced in Example 11 was peeled off, the exposed second adhesive layer was attached to the MDF by hand, and the other second separator A was peeled off. On it, the first separator A of the first adhesive sheet produced in Example 1 is peeled off to expose the first adhesive layer, and the first adhesive layer and the second adhesive layer are bonded and bonded so as to adhere to each other. Another MDF was laminated on the first adhesive layer so that the area was 12.5 mm × 25 mm. Then, it was cured for 24 hours in an environment of 23 ° C. and 50% RH to obtain evaluation sample 1. The tensile shear strength of the evaluation sample 1 was 3.4 MPa.

(Evaluation sample 2)
The adhesive used in Comparative Example 2 was applied to the surface of the MDF in a liquid state, and another MDF was bonded onto the adhesive layer so as to have an adhesive area of 12.5 mm × 25 mm. Since the adhesive is liquid and cannot be fixed, it was fixed with Kapton tape so as not to be peeled off, and cured at 23 ° C. in a 50% RH environment for 24 hours to obtain Evaluation Sample 2. The tensile shear strength of the evaluation sample 2 was 1.2 MPa.

(Evaluation sample 3)
The double-sided adhesive tape used in Comparative Example 3 is attached onto the MDF, the separator on one side of the double-sided adhesive tape is peeled off, and another MDF has an adhesive area of 12.5 mm × 25 mm on the double-sided adhesive tape. Was pasted together. Then, it was cured for 24 hours in an environment of 23 ° C. and 50% RH to obtain an evaluation sample 3. The tensile shear strength of the evaluation sample 3 was 0.2 MPa.

[Evaluation 2 consideration]
In Comparative Example 2, since the curable organic compound contained in the adhesive was a silicone compound, it was soft even after curing and had a low tensile shear strength of 1.2 MPa. Further, in Comparative Example 3, since it was an adhesive, it showed almost no stress at the time of the tensile shear strength test, and the result was that it continued to grow, and the tensile shear strength was very low. On the other hand, Example 11 showed higher tensile shear strength as compared with Comparative Examples 2 and 3.

[Examples 12 to 15]
1. 1. Preparation of First Adhesive Sheet Using a polyester film (first separator A) that has been peeled with a silicone-based release agent on one side, the first adhesive having the composition shown in Table 4 below is used on the peeled surface. The compositions were each applied using an applicator so that the thickness after coating was 75 μm, and dried in a drying oven at 80 ° C. for 2 minutes to form a first adhesive layer.

Next, a polyester film (first separator B) that has been peeled with a silicone-based release agent on one side is used, and the peeled surface is overlapped so as to face the first adhesive layer, and a 2 kg roller is used. Pressed. As a result, a first adhesive sheet in which the first separators A and B were arranged on both sides of the first adhesive layer was obtained.

2. Preparation of Second Adhesive Sheet As the second separator B, the same one as the first separator B is used, and the thickness after coating of the second adhesive composition having the composition composition shown in Table 4 below is applied on the peeling surface. It was applied using an applicator so as to have a thickness of 25 μm, and dried in a drying oven at 80 ° C. for 2 minutes to form a second adhesive layer. Next, as the second separator A, the same one as the first separator A was used, and the peeling-treated surface was overlapped so as to face the second adhesive layer and pressed with a 2 kg roller. As a result, a second adhesive sheet in which the second separators A and B were arranged on both sides of the second adhesive layer was obtained.

3. 3. Adhesive sheet set An adhesive sheet set was obtained by combining the first adhesive sheet and the second adhesive sheet as shown in Table 4.

[Evaluation 3]
(1) Adhesiveness With respect to the adhesive sheet sets of Examples 12 to 15, the adhesive strengths of the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet were measured. The adhesive strength was measured by the same method as that described in the section of Evaluation 1 above. The results are shown in Table 4.

(2) Tensile Shear Strength The tensile shear strength of the adhesive sheet sets of Examples 12 to 15 was measured. The tensile shear strength was determined by the method described in the section "Combination of adhesive strengths of the first adhesive layer and the second adhesive layer" in the section of the above-mentioned method for manufacturing an article. The results are shown in Table 4.

(3) Storage Elastic Modulus The storage elastic modulus of the first adhesive layer and the second adhesive layer was measured for the adhesive sheet sets of Examples 12 to 15. The storage elastic modulus was determined by the method described in the section "Combination of Adhesive Forces of First Adhesive Layer and Second Adhesive Layer" in the section of the above-mentioned method for producing an article. The results are shown in Table 4.

(4) Holding characteristics The holding power of the adhesive sheet sets of Examples 12 to 15 was measured. The holding force was measured by the method described in the section "Combination of Adhesive Forces of First Adhesive Layer and Second Adhesive Layer" in the section of the above-mentioned method for manufacturing an article. The results are shown in Table 4.

(5) Reworkability The reworkability of the adhesive sheet sets of Examples 12 to 15 was measured. The reworkability was measured by the method described in the section "Combination of Adhesive Forces of First Adhesive Layer and Second Adhesive Layer" in the section of the above-mentioned method for manufacturing an article. The results are shown in Table 4.

[Evaluation 3 consideration]
From the results of Examples 12 to 15, the adhesive strength of the first adhesive layer containing the curable organic compound is made stronger than the adhesive strength of the second adhesive layer not containing the curable organic compound. By setting the adhesive strength to strong adhesiveness, the shear strength tended to be high regardless of the adhesive strength of the second adhesive layer. In addition, the reworkability tended to be good. At this time, the thickness of the first adhesive layer was larger than the thickness of the second adhesive layer. From these results, it was suggested that the reactivity and reworkability were improved by making the adhesive strength of one adhesive layer stronger than that of the other adhesive layer. It was also suggested that the same effect can be obtained by increasing the thickness of the adhesive layer containing the curable organic compound.

It was suggested that the holding power tends to be increased by making the adhesive force of one adhesive layer stronger than that of the other adhesive layer, and in particular, making the adhesive force of the one adhesive layer strong adhesive. It was also suggested that the same tendency can be obtained by increasing the thickness of the adhesive layer containing the curable organic compound (Examples 12 and 13). This is a layer having flexibility with low cohesive force on at least one of them, but at the same time, it is possible to increase the holding force by increasing the adhesive force by the thickness to facilitate the dispersion of stress as a whole. Is inferred. Furthermore, it was suggested that the holding power is increased even when both the first adhesive layer and the second adhesive layer are weakly adhesive (Example 15). This is because the first adhesive layer and the second adhesive layer are weakly adhesive, and both are hard layers with high cohesive force, so stress is not concentrated on either one and the force is received as a whole, and the yield strength in the shear direction is increased. It is estimated that it has become higher.

Example 14 had a lower holding power than Examples 12, 13 and 15. From the results in Table 4, it was suggested that the retention characteristics of at least one adhesive layer were improved by setting the storage elastic modulus within a predetermined range. Above all, it was suggested that the retention characteristics were further improved when both the first adhesive layer and the second adhesive layer had a storage elastic modulus within a predetermined range.

From the results of Examples 12 to 15, the first adhesive layer and the second adhesive layer are the combination shown in Example 13, that is, the first adhesive layer containing the curable organic compound is strongly adhesive and the curable organic compound. It was suggested that the combination in which the second adhesive layer containing no is weakly adhesive is the best in terms of reactivity, reworkability, and retention characteristics.

1 ... 1st member 2 ... 2nd member 10 ... Article 11 ... 1st adhesive sheet 12 ... 2nd adhesive sheet 20 ... 1st adhesive sheet member 21 ... 1st separator 23 ... 2nd separator 22 ... 1st adhesive layer 24 … Second adhesive layer 30… Member with second adhesive sheet 50… Adhesive sheet set

Claims (8)

A laminating device for laminating a first adhesive sheet provided with a first adhesive layer and a second adhesive sheet provided with a second adhesive layer.
The first adhesive layer and the second adhesive layer can be cured and adhered by contacting each other.
A first discharge portion that discharges the first adhesive layer of the first adhesive sheet so as to be attached to an adherend,
A second discharging portion for discharging the second adhesive layer of the second adhesive sheet to the first adhesive layer of the first adhesive sheet attached to the adherend, and a second discharging portion.
The direction in which the first adhesive sheet is discharged by the first discharging unit is the same as the direction in which the second adhesive sheet is discharged by the second discharging unit.
The first discharge unit is a stacking device arranged on the upstream side of the second discharge unit along the direction in which the first adhesive sheet and the second adhesive sheet are discharged. A laminating device for laminating a first adhesive sheet provided with a first adhesive layer and a second adhesive sheet provided with a second adhesive layer.
The first adhesive layer and the second adhesive layer can be cured and adhered by contacting each other.
An overlapping portion that overlaps the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet, and
A discharge portion that discharges the first adhesive sheet and the second adhesive sheet that are overlapped with each other so that the first adhesive layer of the first adhesive sheet is attached to the adherend.
A laminating device that has. A first holding portion that holds the first adhesive sheet wound in a roll shape so that it can be unwound, and a first holding portion.
A second holding portion that holds the second adhesive sheet wound in a roll shape so that it can be unwound,
The overlaying device according to claim 1 or 2, wherein the layering device according to claim 1 or 2. The first adhesive sheet includes a first separator arranged on one side of the first adhesive layer.
The second adhesive sheet includes a second separator arranged on one side of the second adhesive layer.
Claims 1 to 1, wherein the first winding portion is capable of winding the first separator from the first adhesive sheet, and the first holding portion and the first winding portion are synchronized with each other. The layering device according to any one of up to 3. The fourth aspect of the present invention, wherein the second winding portion is capable of winding the second separator from the second adhesive sheet, and the second holding portion and the second winding portion are synchronized with each other. Laminating device. The layering apparatus according to any one of claims 1 to 5, further comprising a pressing portion for pressing the first adhesive sheet and the second adhesive sheet that are overlapped with each other. The laminating apparatus according to any one of claims 1 to 6, further comprising a heating unit for heating the superposed first adhesive sheet and the second adhesive sheet. The layering apparatus according to any one of claims 1 to 7, further comprising an irradiation unit that irradiates the overlapped first adhesive sheet and the second adhesive sheet with light.

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