JP7077529B2 - How to manufacture adhesive sheet sets and articles - Google Patents

Description

The present disclosure relates to an adhesive sheet set and a method for manufacturing an article using the adhesive sheet set.

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, and 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 for adhering the members instead of the liquid adhesive (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 Japanese Unexamined Patent Publication No. 2010-37389 Japanese Unexamined Patent Publication No. 2006-312743 Japanese Unexamined Patent Publication No. 9-291260 Japanese Unexamined Patent Publication No. 2010-7023 Japanese Unexamined Patent Publication No. 2014-43099 Japanese Unexamined Patent Publication No. 2008-288601

However, when the members are bonded using a liquid adhesive, coating is difficult depending on the location and position of the members, and uneven coating, application leakage, adhesive squeeze out from the adhered 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, it is possible to simplify the bonding process. However, since the adhesive material is inferior in adhesive strength to the adhesive, the member 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 drops 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. Above all, 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 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, an adhesive sheet set having a pair of adhesive sheets each having an adhesive layer capable of being cured and adhered by contacting each other, and an article using the same. The main purpose is to provide a manufacturing method for the above.

The present disclosure is an adhesive sheet set having 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 on one side. Contains the first component, which is the latent curing agent, and the other contains the second component, which is the material that activates the latent curing agent, and either the first adhesive layer or the second adhesive layer. Contains a third component that is a curable material, so that the first adhesive sheet and the second adhesive sheet are cured and adhered by contacting the first adhesive layer and the second adhesive layer with each other. Provides an adhesive sheet set, which is configured in.

The present disclosure is an adhesive sheet set having 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 on one side. Contains the fifth component, which is a curable material, and the other contains the sixth component, which is a curable material. The first adhesive sheet and the second adhesive sheet are the first adhesive layer and the second adhesive. Provided is an adhesive sheet set that is configured to cure and adhere when the layers come into contact with each other.

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 preparation 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 preparation 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 adhesion. The first adhesive layer comprises 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 the second adhesive sheet. And the second adhesive layer contains a first component, one of which is a latent curing agent, and the other contains a second component, which is a material for activating the latent curing agent, and the first adhesive layer or the above. One of the second adhesive layers provides a method for producing an article, which contains a third component which is a curable material.

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 preparation 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 preparation 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 adhesion. The first adhesive layer comprises 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 the second adhesive sheet. And the second adhesive layer provides a method for producing an article, one of which contains a fifth component which is a curable material and the other of which contains a sixth component which is a curable material.

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 sheet bonding step of bonding 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, and the second adhesive sheet bonding step. It has a second member bonding step of bonding the second member to the other surface of the second adhesive layer of the adhesive sheet, and one of the first adhesive layer and the second adhesive layer has potential. It contains a first component that is a curing agent, the other contains a second component that is a material that activates the latent curing agent, and either the first adhesive layer or the second adhesive layer is cured. Provided is a method for producing an article containing a third component which is a sex material.

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 sheet bonding step of bonding 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, and the second adhesive sheet bonding step. It has a second member bonding step of bonding the second member to the other surface of the second adhesive layer of the adhesive sheet, and one of the first adhesive layer and the second adhesive layer is curable. Provided is a method for producing an article, which comprises a fifth component which is a material and a sixth component which is a curable material on the other hand.

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 bonding step of bonding the first member to the other surface of the first adhesive layer of the multilayer adhesive sheet, and a second bonding layer of the multilayer adhesive sheet. The other surface has a second bonding step of bonding the second member, and the first adhesive layer and the second adhesive layer contain a first component, one of which is a latent curing agent. The other contains a second component that is a material that activates the latent curing agent, and either the first adhesive layer or the second adhesive layer contains a third component that is a curable material. , Provide a method of manufacturing an article.

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. The preparatory step of preparing the adhesive sheet, the first bonding step of bonding the first member to the other surface of the first adhesive layer of the multilayer adhesive sheet, and the second adhesive layer of the multilayer adhesive sheet. The other surface has a second bonding step of bonding the second member, and the first adhesive layer and the second adhesive layer contain a fifth component, one of which is a curable material. Provided is a method for producing an article, which comprises a sixth component, the other of which is a curable material.

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. It also has 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, and has the first adhesive layer and the second adhesive layer. Contains the first component, which is a latent curing agent, and the second component, which is a material that activates the latent curing agent, of the first adhesive layer or the second adhesive layer. One of them provides a method for producing an article, which comprises a third component which is a curable material.

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. It also has 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, and has the first adhesive layer and the second adhesive layer. Provides a method for producing an article, one containing a fifth component which is a curable material and the other containing a sixth component which is a curable material.

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 is the above-mentioned first adhesive sheet having the first adhesive layer. A preparatory step for preparing a multilayer 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 multilayer layer. It has a bonding step of bonding the first member to the other surface of the first adhesive layer of the adhesive sheet, and one of the first adhesive layer and the second adhesive layer is a latent curing agent. One of the first adhesive layer and the second adhesive layer is a curable material, which contains a first component and the other contains a second component which is a material for activating the latent curing agent. Provided is a method for producing an article containing a third component.

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 is the above-mentioned first adhesive sheet having the first adhesive layer. A preparatory step for preparing a multilayer 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 multilayer layer. The first adhesive layer and the second adhesive layer have a bonding step of bonding the first member to the other surface of the first adhesive layer of the adhesive sheet, and one of the first adhesive layer and the second adhesive layer is a curable material. Provided is a method for producing an article, which contains 5 components and a 6th component in which the other is a curable material.

The present disclosure has the effect of being able to provide an adhesive sheet set having a pair of adhesive sheets each having an adhesive layer that can be cured and adhered by contacting each other, and a method for manufacturing an article using the same. Play.

It is a schematic diagram which shows an example of the adhesive sheet set 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 the other example of 1st Embodiment of the manufacturing method of the article of this disclosure. It is a process drawing which shows the other 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 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 a schematic sectional drawing which shows an example of the article obtained by 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.

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 that take advantage of them.

In the method for manufacturing an article using a two-component separate coating type adhesive, for example, as disclosed in Patent Documents 2 and 3, usually, two types of liquid materials are separately applied to the adherend surface of each member and then each. The members are bonded to each other by contacting the liquid material coated surfaces of the members and curing them at room temperature. However, the method of manufacturing an article by the coating adhesive 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 adhesive method, and the members could be firmly adhered. rice field. 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 material and expansion coefficient difference. 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 may 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.

Furthermore, as a result of repeated studies on the adhesive sheet set, the present inventor has found that the diffusion rate of the components in each adhesive layer of each adhesive sheet is very important in the adhesive method using the adhesive sheet set. did. In the case of the above-mentioned adhesive sheet set, for example, when each adhesive layer of each adhesive sheet comes into contact with each other, the components in each adhesive layer diffuse with each other and a curing reaction occurs. The curing rate is greatly affected by the degree of diffusion of the components in each adhesive layer. If the components in each adhesive layer are difficult to diffuse, curing will be slowed down, resulting in poor curing or the need for time and effort in the bonding process. Here, since the two-component separate coating type adhesive is usually used by contact-curing each other immediately after applying each of the two types of liquid materials, it is in a liquid state at the time of contact and has fluidity. It can be said that each liquid material is easy to mix. On the other hand, since the adhesive sheet of the above adhesive sheet set is made into a sheet, it has no or low fluidity, and compared with the coating adhesive method using a two-component separate coating type adhesive, each adhesive sheet is adhered at the time of contact. The components in the layer are difficult to diffuse with each other. Therefore, as a result of further studies, the present inventor has set the components contained in each adhesive layer of each adhesive sheet of the above adhesive sheet set to a predetermined combination to determine the curing speed when each adhesive layer comes into contact with each other. We found that it was possible to speed it up.

The adhesive sheet set of the present disclosure is based on these findings described above. Hereinafter, the adhesive sheet set 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. be. Further, the first member and the second member may be simply referred to as a member, and the first adhesive sheet-attached member and the second adhesive sheet-attached member may be simply referred to as an adhesive sheet-attached member.

I. Adhesive sheet set The adhesive sheet set of the present disclosure is roughly classified into two modes according to the structure of the adhesive layer. Hereinafter, each aspect will be described separately.

A. First Aspect of Adhesive Sheet Set The first aspect of the adhesive sheet set of the present disclosure is an adhesive sheet set having 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 contain a first component, one of which is a latent curing agent, and the other contains a second component, which is a material for activating the latent curing agent. Either the first adhesive layer or the second adhesive layer contains a third component which is a curable material, and the first adhesive sheet and the second adhesive sheet are the first adhesive layer and the first adhesive layer. The two adhesive layers are configured to be cured and adhered by coming into contact with each other.

1 (a) and 1 (b) are schematic views showing an example of the adhesive sheet set of the present disclosure. The adhesive sheet set 50 has a pair of the first adhesive sheet 11 and the second adhesive sheet 12. The first adhesive sheet 11 includes a first adhesive layer 22, and the second adhesive sheet 12 includes a second adhesive layer 24. One of the first adhesive layer 22 and the second adhesive layer 24 contains a first component which is a latent curing agent, and the other contains a second component which is a material for activating the latent curing agent. Either the 1 adhesive layer 22 or the 2nd adhesive layer 24 contains a third component which is a curable material. The first adhesive sheet 11 and the second adhesive sheet 12 are configured so that the first adhesive layer 22 and the second adhesive layer 24 are hardened by contact with each other to develop a strong adhesive force and can be firmly adhered. Has been done. 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 side 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).

FIG. 2 is a process diagram showing an example of an embodiment of an article manufacturing method using the adhesive sheet set of the present disclosure, and is an example of using the adhesive sheet set 50 shown in FIG. 1 (a). First, as shown in FIG. 2A, a member 20 with a first adhesive sheet is prepared, wherein one surface of the first adhesive layer 22 of the first adhesive sheet 11 is bonded to the first member 1. .. Separately, as shown in FIG. 2B, a member 30 with a second adhesive sheet, in which one surface of the second adhesive layer 24 of the second adhesive sheet 12 is bonded to the second member 2. prepare. Subsequently, as shown in FIGS. 2 (c) to 2 (d), the other surface of the first adhesive layer 22 of the first adhesive sheet-attached member 20 and the second adhesive layer 24 of the second adhesive sheet-attached member 30. The first separator 21 and the second separator 23 are peeled off and bonded to the other surface. 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 each other, and the first component is released. It is activated by the second component and causes a curing reaction of the curable material. Then, 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 as shown in FIG. 2 (d), and become a cured adhesive layer 3 via the cured adhesive layer 3. The first member 1 and the second member 2 can be firmly bonded to each other. As a result, the article 10 is obtained.

According to the adhesive sheet set of the present disclosure, the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet can be cured by contacting each other, and the strong adhesion developed by the curing can be achieved. It can be firmly adhered with force.

The adhesive sheet set composed of the first adhesive sheet and the second adhesive sheet includes an adhesive layer formed from one of two types of liquid materials of a two-component separate coating type adhesive, and an adhesive layer formed from the other. Is sorted into each adhesive sheet. By individually forming two types of liquid materials of the two-component separate coating type adhesive into a sheet in this way, the following effects can be obtained.

Normally, when two members are bonded together using a two-component separate coating type adhesive, it is necessary to apply each liquid material to each member. In addition, there is no need to mix liquid materials, and it is possible to prevent coating unevenness during coating, forgetting to apply, and protrusion from the adherend surface. Further, since the liquid material is made into a sheet, it is possible to control by the thickness, and by adhering the adhesive sheet to the member, the adhesive layer can be inevitably arranged on the member. Therefore, it is also excellent in terms of quality control at the time of manufacturing the article. Further, the above two types of liquid materials proceed with the curing reaction when they come into contact with each other. However, since the above liquid materials are separated and formed into a sheet, the curing reaction does not proceed during storage, so that the adhesive sheet alone is used. Can be stored for a long time. Therefore, the adhesive sheet set can be used according to the timing of manufacturing the article. In addition, the size of the adhesive sheet can be adjusted according to the size and shape of the adherend surface.

Here, the latent curing agent can induce or / or accelerate the curing reaction of the curable material in the presence of a material that activates the latent curing agent, or can cause a curing reaction with the curable material. Although it can occur, it is a substantially stable component for a period of time in the absence of a material that activates the latent hardener. Therefore, during the storage of the adhesive sheet, the curing reaction of the curable material or the curing reaction of the curable material and the latent curing agent does not substantially occur for a certain period of time, so that long-term storage is possible. Part or all of the temperature range in which the latent curing agent is at least substantially stable in the absence of a material that activates the latent curing agent (hereinafter referred to as "stable temperature range of the latent curing agent"). May be contained at −40 ° C. or higher and 80 ° C. or lower, or may be contained at −10 ° C. or higher and 30 ° C. or lower, from the viewpoint of facilitating storage of the adhesive sheet set. The adhesive sheet set may be stored while controlling environmental factors such as temperature, humidity, and light, if necessary. Since the stable temperature range of the latent curing agent includes normal temperature, it is possible to eliminate the need for heating and cooling during storage, which improves the convenience of the adhesive sheet set. The normal temperature means 23 ° C.

Further, the material that activates the latent curing agent is a component that can activate the latent curing agent. A part or all of the temperature range in which the material that activates the latent curing agent activates the latent curing agent is -40 ° C or more and 80 ° C or less from the viewpoint of suppressing the occurrence of warping or floating of the members to be bonded. It may be contained in -10 ° C or higher and 30 ° C or lower. The action of the above materials may be manifested and / or activated by heating or cooling, if desired. By including the normal temperature in the above temperature range, it is possible to eliminate the need for heating or cooling during use, which improves the convenience of the adhesive sheet set.

In this embodiment, the first component, which is a latent curing agent, and the second component, which is a material that activates the latent curing agent, are separately contained in the first adhesive layer and the second adhesive layer. The components contained in the first adhesive layer and the second adhesive layer are in a predetermined combination. In this embodiment, when the first adhesive layer and the second adhesive layer come into contact with each other, the components in the first adhesive layer and the components in the second adhesive layer diffuse with each other, so that the first component becomes the second component. The curing reaction of the curable material or the curing reaction of the curable material and the first component is started and progresses. At this time, the second component is used to activate the first component, and the first component is used to react the third component, or the second component is used to activate the first component, and the curable material and the first component are used. Since a continuous reaction is used by reacting with one component, the activation energy of the reaction can be lowered as compared with the case where a curable material is cured by using, for example, one catalyst, so that the curing rate can be reduced. It can be made faster. Furthermore, in general, since most of the first component and the second component have a small molecular weight, they are easy to diffuse, so that the curing reaction of the curable material or the curing reaction between the curable material and the first component can be efficiently promoted. Can be done.

Hereinafter, each configuration of the first aspect of the adhesive sheet set of the present disclosure 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. Further, the first adhesive layer and the second adhesive layer contain a first component, one of which is a latent curing agent, and the other contains a second component, which is a material for activating the latent curing agent. Either one of the first adhesive layer and the second adhesive layer contains a third component which is a curable material. Hereinafter, the materials and properties of the first adhesive layer and the second adhesive layer will be described.

(1) Material The first adhesive layer and the second adhesive layer contain a first component, one of which is a latent curing agent, and the other contains a second component, which is a material for activating the latent curing agent. , Either the first adhesive layer or the second adhesive layer contains a third component which is a curable material.

Further, one of the first adhesive layer and the second adhesive layer may contain the above-mentioned third component, and the other may contain a fourth component which is a curable material. In this case, the curable material is previously contained in the first adhesive layer and the second adhesive layer, respectively, and if the first component and the second component are diffused, the curing reaction is induced and / or promoted, so that the reaction is carried out. It is possible to improve the sex. For example, the curing speed can be dramatically increased as compared with the case where the curable material is contained in only one of the adhesive layers. Further, when the first adhesive layer and the second adhesive layer come into contact with each other, the first component and the second component diffuse to cause a curing reaction of the curable material or the curable material and the first component in each adhesive layer. Since the curing reaction of the curable material proceeds, it is not necessary to consider the ease of diffusion of the curable material into other adhesive layers, which is advantageous when the curable material has a large molecular weight and is difficult to diffuse. be. Further, since both the first adhesive layer and the second adhesive layer contain a curable material, substantially uniform curing is possible. Further, since both the first adhesive layer and the second adhesive layer contain a curable material, it is possible to reduce the variation in the mixed state of each component, so that the film strength and the glass transition temperature due to the decrease in the crosslink density can be reduced. It is possible to suppress the decrease and stabilize the physical properties of the adhesive layer after curing.

(A) First component The first component is a latent curing agent. The first component, which is a latent curing agent, can induce or / or accelerate the curing reaction of the curable material in the presence of the second component, which is a material that activates the latent curing agent. A curing reaction can occur with the curable material, but in the absence of the second component, it is a substantially stable component for a period of time.

The first component can induce or / or accelerate the curing reaction of the curable material in the presence of the second component, or can cause a curing reaction with the curable material. In the absence of the second component, a substantially stable curing agent can be used for a certain period of time, and can be appropriately selected depending on the type of the curing material. The first component may be one kind or two or more kinds. Further, when the first component is two or more kinds, for example, one of the first adhesive layer and the second adhesive layer contains a third component which is a curable material, and the other is a curable material. When the four components are contained, the latent curing agent for the third component and the latent curing agent for the fourth component may be the same or different.

Hereinafter, the case where the first component is a component capable of inducing or / or promoting the curing reaction of the curable material and the case where the first component is a component capable of causing a curing reaction with the curable material will be described separately. ..

(I) When the first component is a component capable of inducing or / or promoting the curing reaction of the curable material When the first component and the second component act as a catalyst, a small amount of the first component is used. However, if it is diffused, the second component is activated, and if even a small amount of the second component is diffused, the curing reaction of the curable material is induced or / and promoted, so that the reactivity can be improved.

When the first component is a component capable of inducing or / or promoting the curing reaction of the curable material, for example, a catalytic curing agent can be used.

As the first component, for example, an active species that promotes a curing reaction of a curable material, for example, a radical, a cation, an anion, an electrophile, or the like can be used in the presence of the second component, and specifically, a substance that generates an electrophile can be used. Examples include radical generators, base generators, acid generators and electrophile generators. Further, a reducing agent can also be used as the first component.

Further, the first component may be a catalytic curing agent to which a potential is imparted. Examples of the method for imparting potential to the first component include a method using molecular design or an environmental factor.

When the potential is given to the first component by the molecular design, examples of the molecular design include microencapsulation, inclusion and the like. That is, the first component may be a microencapsulated compound, an inclusion compound, or the like. Specific examples thereof include microcapsules containing a catalytic curing agent and inclusion compounds containing a catalytic curing agent.

When the first component is given potential by an environmental factor, examples of the environmental factor include temperature, humidity, and light. For example, a catalytic curing agent that exhibits activity by an external stimulus can be mentioned. Examples of the external stimulus include light such as heat, moisture, visible light, ultraviolet light, and infrared light. That is, a catalytic curing agent having thermal potential, water potential, photopotential and the like can be used.

When the curable material contains an acrylic compound, for example, a radical generator, a microencapsulated one, or a clathrate compound can be used as the first component. In this case, the radical generator is, for example, a peroxide as disclosed as a radical polymerization initiator in JP-A-2008-308531, and an oxidation of a redox-based catalyst as disclosed in JP-A-2008-81691. Examples thereof include agents, triethylborane, radicals such as an alkyl-boranamine complex, and organic metal compounds. Examples of the microencapsulated compound and the clathrate compound include microcapsules containing an amine-based catalyst and the like, and inclusion compounds containing an amine-based catalyst and the like.

When the curable material contains an epoxy compound, as the first component, for example, an electroelectron generator, a microencapsulated one, an inclusion compound, or a catalytic curing agent exhibiting activity by an external stimulus can be used. In this case, examples of the electrophile generator include blocked isocyanate compounds. Examples of the microencapsulated compound and the inclusion compound include microcapsules containing a catalytic curing agent such as an imidazole compound and an amine compound, and an inclusion compound containing a catalytic curing agent such as an imidazole compound and an amine compound. And so on.

When the curable material contains a silicone compound, for example, a reducing agent can be used as the first component, and examples thereof include a tin catalyst, a metal catalyst such as a titanium catalyst, and the like.

When the curable material contains a melamine compound, as the first component, for example, a microencapsulated one can be used, and examples thereof include microcapsules containing an epoxy compound.

From the viewpoint of enhancing the reactivity of the contact curing between the first adhesive layer and the second adhesive layer, the molecular weight of the first component can be reduced, specifically, within the range of 80 or more and 500 or less, particularly 90 or more and 300. It can be within the following range, particularly within the range of 90 or more and 200 or less. This is because if the molecular weight of the first component is small, the first component is likely to diffuse, so that the curing reaction is likely to proceed and the reactivity is improved.

The content of the first component can be such that the curable material can sufficiently react when the first adhesive layer and the second adhesive layer come into contact with each other, and the curable material and the first component can be sufficiently reacted. It can be appropriately set according to the combination and type of the second component. Above all, the content of the first component can be equal to or higher than the content of the second component, and in particular, can be higher than the content of the second component. For example, when the first adhesive layer contains the first component and the second adhesive layer contains the second component, the content of the first component in the first adhesive layer is 100 parts by mass of the second component. , 100 parts by mass or more and 1000 parts by mass or less, particularly 150 parts by mass or more and 500 parts by mass or less, particularly 200 parts by mass or more and 400 parts by mass or less. Further, for example, when the first adhesive layer contains a peroxide as a first component and an acrylic compound as a third component, and the second adhesive layer contains a metal catalyst as a second component and an acrylic compound as a fourth component, the first The content of peroxide in the adhesive layer is, for example, in the range of 0.5 parts by mass or more and 20 parts by mass or less, particularly in the range of 1 part by mass or more and 15 parts by mass or less, particularly with respect to 100 parts by mass of the acrylic compound. It can be within the range of 2 parts by mass or more and 10 parts by mass or less. If the content of the peroxide in the first adhesive layer is too high, the adhesion to the adherend may be weakened, while if the content is too low, it may cause poor curing. be. When each component is other than the above combination, the content of the first component does not deviate significantly from the general distribution at the time of two-component curing when using a general-purpose two-component curing type adhesive. There is no particular problem.

(Ii) When the first component is a component capable of causing a curing reaction with a curable material When the first component is a component capable of causing a curing reaction with a curable material, for example, an addition-type curing agent. Can be used.

The first component may be, for example, an addition-type curing agent having low reactivity with a curable material in the first place, or may be an addition-type curing agent to which potential is imparted. By imparting potential to the first component, the reactivity with the curable material can be reduced.

When the first component is an addition-type curing agent having low reactivity with the curable material, it can be appropriately selected depending on the type of the curable material.

When the first component is an addition-type curing agent to which the potential is imparted, examples of the method for imparting the potential to the first component include molecular design and environmental factor methods.

When the potential is given to the first component by the molecular design, examples of the molecular design include microencapsulation, inclusion and the like. That is, the first component may be a microencapsulated compound, an inclusion compound, or the like. Specifically, microcapsules containing an addition-type curing agent and inclusion compounds containing an addition-type curing agent can be used.

When the first component is given potential by an environmental factor, examples of the environmental factor include temperature, humidity, and light. For example, an addition curing agent that exhibits activity by an external stimulus can be mentioned. Examples of the external stimulus include light such as heat, moisture, visible light, ultraviolet light, and infrared light. That is, an addition-type curing agent having thermal potential, water potential, optical potential, and the like can be used.

When the curable material contains an epoxy compound, for example, an addition-type curing agent or an addition-type curing agent that exhibits activity by an external stimulus can be used as the first component. Examples of the addition type curing agent include thiol compounds, phenol compounds, amine compounds and the like. Examples of the addition-type curing agent that exhibits activity by an external stimulus include dicyandiamide and hydrazides.

From the viewpoint of enhancing the reactivity of the contact curing between the first adhesive layer and the second adhesive layer, the molecular weight of the first component can be reduced. Specifically, the molecular weight of the first component can be in the range of 50 or more and 1000 or less, particularly in the range of 100 or more and 900 or less, and particularly in the range of 200 or more and 800 or less. This is because if the molecular weight of the first component is small, the first component is likely to diffuse, so that the curing reaction is likely to proceed and the reactivity is improved.

The content of the first component can be an amount that allows the curable material and the first component to sufficiently react when the first adhesive layer and the second adhesive layer come into contact with each other, and the curable material. , The combination and type of the first component and the second component can be appropriately set. Above all, the content of the first component can be equal to or higher than the content of the second component, and in particular, can be higher than the content of the second component. For example, when the first adhesive layer contains the first component and the second adhesive layer contains the second component, the content of the first component in the first adhesive layer is 100 parts by mass of the second component. , 100 parts by mass or more and 1000 parts by mass or less, particularly 150 parts by mass or more and 500 parts by mass or less, particularly 200 parts by mass or more and 400 parts by mass or less. Further, for example, when the first adhesive layer contains a thiol compound as a first component, an epoxy compound as a third component, and the second adhesive layer contains a tertiary amine compound as a second component, the thiol compound in the first adhesive layer. The content of the epoxy compound depends on the epoxy equivalent of the epoxy compound, but for example, the epoxy equivalent is 190 g / eq. The epoxy compound may be in the range of 40 parts by mass or more and 150 parts by mass or less, particularly in the range of 50 parts by mass or more and 120 parts by mass or less, particularly in the range of 60 parts by mass or more and 90 parts by mass or less with respect to 100 parts by mass of the epoxy compound. can. This is because if the content of the thiol compound in the first adhesive layer is too high, the adhesion to the adherend may be weakened, while if the content is too low, it may cause poor curing. .. When each component is other than the above combination, the content of the first component does not deviate significantly from the general distribution at the time of two-component curing when using a general-purpose two-component curing type adhesive. There is no particular problem.

(B) Second component The second component is a material that activates the latent curing agent. As such a material, a material capable of activating the first component can be used, and can be appropriately selected depending on the type of the first component and the curable material. The above-mentioned material may be one kind or two or more kinds.

Hereinafter, the case where the first component is a component capable of inducing or / or promoting the curing reaction of the curable material and the case where the first component is a component capable of causing a curing reaction with the curable material will be described separately. ..

(I) When the first component is a component capable of inducing or / or promoting the curing reaction of the curable material The first component is a component capable of inducing or / or promoting the curing reaction of the curable material. If so, the second component is a component capable of activating the first component. The second component is appropriately selected according to the type of the first component.

For example, when the first component is a radical generator, a base generator, an acid generator, an electrophilic agent generator, or a reducing agent, a catalyst can be used as the second component.

When the first component is microencapsulated, for example, a catalyst, a material capable of dissolving the shell of the microcapsules, a material capable of promoting the destruction of the microcapsules, or the like may be used as the second component. can. Specific examples of the material capable of dissolving the shell of the microcapsules include a pH adjuster, a solvent, water and the like. Specific examples of the material capable of promoting the destruction of microcapsules include a compatibilizer.

When the first component is a clathrate compound, for example, a catalyst or a material capable of separating the host compound and the guest compound constituting the clathrate compound can be used as the second component. Specific examples of such a material include hydrogen bond inhibitors, solvents, water and the like.

Further, when the first component is a catalytic curing agent that exhibits activity by an external stimulus, a catalyst can be used as the second component.

When the curable material contains an acrylic compound and the first component is a radical generator and a peroxide, the second component includes, for example, amines, barium-based, copper-based, titanium-based, and manganese. Metal-based catalysts such as based, zinc-based, calcium-based, copper-based, iron-based, barium-based, and lithium-based, dimethylaniline, and quaternary ammonium salts can be used. When the first component is a radical generator and the oxidizing agent of the redox-based catalyst, a reducing agent of the redox-based catalyst can be used as the second component. When the first component is a radical generator and is a borane or an organometallic compound, for example, a tertiary amine or the like can be used as the second component. When the first component is an inclusion compound containing an amine-based catalyst or the like, for example, alcohol or the like can be used as the second component.

When the curable material contains an epoxy compound and the first component is an electrophile generator and a blocked isocyanate compound, for example, a dissociation catalyst can be used as the second component. When the first component is a microcapsule containing a catalytic curing agent such as an imidazole compound or an amine compound, for example, a pH adjuster, a shell-soluble monomer, a compatibilizer or the like is used as the second component. be able to. When the first component is an inclusion compound containing an imidazole compound, an amine compound, or the like, as the second component, for example, a hydrogen bond inhibitor such as an aqueous material can be used.

When the curable material contains a melamine compound, the first component is a microcapsule containing an epoxy compound, and the shell of the microcapsule is water-soluble, the second component is, for example, water. And so on.

From the viewpoint of enhancing the reactivity of the contact curing between the first adhesive layer and the second adhesive layer, the molecular weight of the second component can be reduced, specifically, within the range of 80 or more and 1000 or less, particularly 90 or more and 800. It can be within the following range, particularly within the range of 90 or more and 700 or less. This is because if the molecular weight of the second component is small, the second component is likely to diffuse, so that the curing reaction is likely to proceed and the reactivity is improved.

The content of the second component can be an amount capable of sufficiently activating the first component when the first adhesive layer and the second adhesive layer come into contact with each other, and the first component and the second component can be sufficiently activated. It can be appropriately set according to the combination and type of the component and the curable material. For example, when the first adhesive layer contains a peroxide as a first component and an acrylic compound as a third component, and the second adhesive layer contains a metal-based catalyst as a second component and an acrylic compound as a fourth component, the second adhesion is performed. The content of the metal-based catalyst in the layer is, for example, within the range of 0.05 parts by mass or more and 5 parts by mass or less, particularly 0.1 parts by mass or more and 3 parts by mass or less with respect to 100 parts by mass of the acrylic compound. In particular, it can be in the range of 0.2 parts by mass or more and 2 parts by mass or less. If the content of the metal-based catalyst in the second adhesive layer is too high, the adhesion to the adherend may be weakened, while if the content is too low, it may cause curing failure. be. When each component is other than the above combination, the content of the second component does not deviate significantly from the general distribution at the time of two-component curing when using a general-purpose two-component curing type adhesive. There is no particular problem.

(Ii) When the first component is a component capable of causing a curing reaction with the curable material When the first component is a component capable of causing a curing reaction with the curable material, the second component is the first component. A component capable of activating one component and inducing or / or promoting a curing reaction between the curable material and the first component. The second component is appropriately selected according to the type of the first component.

For example, when the first component is an addition-type curing agent having low reactivity with a curable material, a catalyst can be used as the second component.

When the first component is microencapsulated, for example, a catalyst, a material capable of dissolving the shell of the microcapsules, a material capable of promoting the destruction of the microcapsules, or the like may be used as the second component. can. Specific examples of the material capable of dissolving the shell of the microcapsules include a pH adjuster, a solvent, water and the like. Specific examples of the material capable of promoting the destruction of microcapsules include a compatibilizer.

When the first component is a clathrate compound, for example, a catalyst or a material capable of separating the host compound and the guest compound constituting the clathrate compound can be used as the second component. Specific examples of such a material include hydrogen bond inhibitors, solvents, water and the like.

Further, when the first component is an addition-type curing agent that exhibits activity by an external stimulus, a catalyst can be used as the second component.

When the curable material contains an epoxy compound, examples of the second component include tertiary amine compounds, aliphatic dimethylurea, aromatic dimethylurea, imidazole compounds, phosphorus-based catalysts, polyamines, metal chelate compounds and the like. Specifically, when the first component is a thiol compound, for example, a tertiary amine compound, an aliphatic dimethylurea, an aromatic dimethylurea, a phosphorus-based catalyst, polyamines and the like can be used as the second component. When the first component is a phenol compound, for example, an imidazole compound, polyamines, an aliphatic dimethylurea, an aromatic dimethylurea and the like can be used as the second component. When the first component is an amine compound, for example, an imidazole compound, a phosphorus-based catalyst, or the like can be used as the second component. When the first component is dicyandiamide or hydrazides, for example, aliphatic dimethylurea, aromatic dimethylurea, imidazole compound, polyamines, tertiary amine compound, metal chelate compound and the like can be used as the second component.

From the viewpoint of enhancing the reactivity of the contact curing between the first adhesive layer and the second adhesive layer, the molecular weight of the second component can be reduced, specifically, within the range of 30 or more and 600 or less, particularly 40 or more. It can be within the range of 500 or less, particularly within the range of 50 or more and 400 or less. This is because if the molecular weight of the second component is small, the second component is likely to diffuse, so that the curing reaction is likely to proceed and the reactivity is improved.

The content of the second component can be an amount that allows the curable material and the first component to sufficiently react when the first adhesive layer and the second adhesive layer come into contact with each other, and is curable. It can be appropriately set according to the material, the combination and type of the first component and the second component. For example, when the first adhesive layer contains a thiol compound as a first component and an epoxy compound as a third component, and the second adhesive layer contains a tertiary amine compound as a second component, the tertiary amine compound in the second adhesive layer As for the content of, for example, when the content of the component other than the second component in the second adhesive layer is 100 parts by mass, it is within the range of 10 parts by mass or more and 300 parts by mass or less, and more than 20 parts by mass or 250 parts by mass. It can be within the following range, particularly within the range of 30 parts by mass or more and 200 parts by mass or less. If the content of the tertiary amine compound in the second adhesive layer is too high, the adhesion to the adherend may be weakened, while if the content is too low, it may cause curing failure. Is. It should be noted that the content of the second component, in which each component is other than the above combination, does not deviate significantly from the general distribution at the time of two-component curing when a general-purpose two-component curing type adhesive is used. There is no problem.

(C) Third component The third component is a curable material. The third component is a component capable of causing a curing reaction by itself in the presence of the first component and the second component, or a component capable of causing a curing reaction with the first component. When a two-component separate coating type adhesive is used for the first adhesive layer and the second adhesive layer, the third component usually contains at least the main component of the two-component separate coating type adhesive. The curable material is a material that can be cured.

Examples of the third component include a curable organic compound and other materials used in combination with the curable organic compound.

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

When the third component contains an acrylic compound, the acrylic compound may be either an acrylic monomer or an acrylic polymer. Further, the acrylic polymer may be either a low acrylic polymer or a high acrylic polymer. For example, examples of the acrylic monomer include (meth) acrylic acid; methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, and isobutyl (meth) acrylate. , N-Hexyl (meth) acrylate, octyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, cyclohexyl (meth) acrylate, benzidyl (meth) acrylate and other (meth) acrylate monomers; 2-Hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, (meth) acrylamide, N-methylol acrylamide, n-butoxy-N-methylol (meth) acrylamide, 2- (meth) acrylamide-2-methyl -1-Soda propanesulfonic acid, diacetone (meth) acrylamide, glycidyl (meth) acrylate, dicyclopentenyloxyalkyl (meth) acrylate, polyethylene glycol (meth) acrylate, polypropylene glycol (meth) acrylate, dimethylaminoethyl (meth) Functional group-containing singles such as acrylates, polyethylene glycol di (meth) acrylates, 1,4-butanediol (meth) acrylates, epoxy (meth) acrylates, trimethylolpropanetri (meth) acrylates, and terminal (meth) acrylic-modified liquid polybutadienes. Quantum; can be mentioned. Further, it may be a low polymer, a homopolymer, or a copolymer obtained by polymerizing these acrylic monomers. Further, it may be a low polymer or a high polymer obtained by copolymerizing these acrylic monomers with other monomers. Examples of other monomers include monomers such as styrene, vinyl toluene, vinyl acetate, acrylonitrile, vinyl chloride, vinylidene chloride, ethyl vinyl ether, acrylamide, divinylbenzene, triallyl cyanurate, and triallyl isocyanurate. Can be done.

When the third 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 and 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, and an aromatic type 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 third 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, it can be liquid. Can be solid at room temperature.

The adhesive layer may contain at least one of a liquid epoxy compound and a solid epoxy compound, but may contain both. When the adhesive layer contains a liquid epoxy compound and a solid epoxy compound, the adhesiveness 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 the 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. Further, 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, the durability and adhesive strength of the adhesive layer 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 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, the durability and adhesive strength of the adhesive layer 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 the above range improves the cohesive force and film forming property of the adhesive layer and makes it stronger against shear stress. In addition, the durability and adhesive strength of the adhesive layer 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 (method for determining the epoxy equivalent of the epoxy compound).

When the 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 adhesiveness and cohesive force required for the adhesive layer. .. In order to obtain an adhesive layer having strong adhesiveness or low cohesive force, the content of the liquid epoxy compound is 50% by mass with respect to the total amount (100% by mass) of the liquid epoxy compound and the solid epoxy compound in the adhesive layer. As mentioned above, it can be 60% by mass or more, and 95% by mass or less, and 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 obtain an adhesive layer having weak adhesiveness or high cohesive force, the content of the liquid epoxy compound is 20 with respect to the total amount (100% by mass) of the liquid epoxy compound and the solid epoxy compound in the adhesive layer. It can be 70% 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 adhesive layer can be equal to or less than the content of the solid epoxy compound. In general, 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 hard layer.

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

(D) Fourth component The fourth component is a curable material. The fourth component is a component capable of causing a curing reaction by itself in the presence of the first component and the second component, or a component capable of causing a curing reaction with the first component. When a two-component separate coating type adhesive is used for the first adhesive layer and the second adhesive layer, the fourth component usually contains at least the main component of the two-component separate coating type adhesive.

Since the specific example of the fourth component is the same as that of the third component, the description thereof is omitted here.

The third component and the fourth component may be the same or different. When the third component and the fourth component are the same component, it is advantageous in terms of cost.

When the third component and the fourth component are different components, the third component and the fourth component are appropriately used depending on the material and properties of the adherend to which the first adhesive layer and the second adhesive layer are bonded. It is possible to select. In particular, it is effective when the materials and properties of the adherend to which the first adhesive layer and the second adhesive layer are bonded are different, that is, when different types of members are bonded using an adhesive sheet set. Further, as described in the fourth and fifth embodiments of the method for manufacturing an article described later, one adhesive layer is impregnated with another member, or the first adhesive layer and the second adhesive layer are brought into contact with each other. By arranging another member at the interface, when fixing another member to one member or repairing or reinforcing one member by another member, the material and properties of one member and the other member can be changed. It is effective even if they are different. Examples of different types of members include members made of different materials, members having different surface roughness such as smooth and rough surfaces, and members having different hardness.

When the third component and the fourth component are different components, the third component and the fourth component are appropriately selected according to the physical properties and functions required for the first adhesive layer and the second adhesive layer, respectively. be able to. For example, as described in the fourth and fifth embodiments of the method for manufacturing an article described later, when the first adhesive layer and the second adhesive layer are laminated on a member, one of the adhesives arranged on the member side is adhered. The layer is required to have adhesive performance with a member, and the other adhesive layer arranged on the outermost surface can have a protective function. In this case, the third component and the fourth component are appropriately selected so that the hardness of the outermost adhesive layer after curing is higher than the hardness of the adhesive layer arranged on the member side after curing. , It is possible to impart a hard coat property to the adhesive layer which is the outermost surface.

(E) Seventh component The seventh component is a polymer having compatibility with the components contained in the first adhesive layer. The first adhesive layer may further contain a seventh 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 them to 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 polymer 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 plasticizer, and therefore, the adhesive layer containing the components of each liquid material is more compatible. By adding the polymer, the entire adhesive layer is plasticized, and the adhesiveness and flexibility of the polymer are exhibited. This makes it possible to improve the adhesiveness before curing and the adhesiveness to the adherend, and also improve the toughness of the adhesive layer after curing and further enhance the adhesive strength.

Here, the fact that the polymer has compatibility with the components contained in the first adhesive layer means that the polymer has a good affinity with the components contained in the first adhesive layer and is contained in the first adhesive layer. It means that phase separation does not occur when mixed with and in an arbitrary ratio. In the first adhesive layer, the fact that the polymer is compatible with the components contained in the first adhesive layer means that, for example, the transparency of the first adhesive layer is high and the haze value of the first adhesive layer is high. Confirmed from the fact that it is low, and 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), no micron-sized islands are generated in the layer. can do. The same applies to the second adhesive layer described later.

The seventh component can have compatibility with the curable material contained in the first adhesive layer, particularly with respect to the curable organic compound.

In particular, when the first adhesive layer contains a curable organic compound of either an acrylic compound or an epoxy compound as a curable material, the effect of the seventh component can be more exerted. For example, when the curable organic compound is an acrylic compound, the crosslink density tends to be high, but by including the seventh component, the main chain of the acrylic compound can be lengthened, that is, the crosslink density can be lowered. 1 It is possible to impart flexibility to the adhesive layer. When the curable organic compound is an epoxy compound, the manifestation of the effect by the seventh component will be described later.

Further, the seventh component can have compatibility with the component contained in the second adhesive layer. Here, the fact that the seventh component has compatibility with the component contained in the second adhesive layer has a good affinity with the component contained in the second adhesive layer, and the first adhesive layer and the second adhesive layer are adhered to each other. It means that phase separation does not occur when the layers are in contact with each other and mixed with the components contained in the second adhesive layer at an arbitrary ratio.

The seventh component is not particularly limited as long as it contains a polymer having good compatibility with the curable material contained in the first adhesive layer. 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.

Among them, the seventh component can be a component containing an acrylic polymer, that is, an acrylic polymer-containing component.

The 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, and two kinds of the acrylic polymer. It is a copolymer of the above acrylic acid ester monomer, and may be a component containing one or more copolymers. Further, the acrylic polymer-containing component may be a mixed component of the homopolymer and the copolymer. The concept of methacrylic acid is also included in the "acrylic acid" of the acrylic acid ester monomer. Specifically, the acrylic polymer-containing component may be a mixture of a methacrylate polymer and an acrylate polymer, and is an acrylic acid ester composed of acrylate-acrylate, methacrylate-methacrylate, methacrylate-acrylate and the like. It may be a polymer. Among them, the acrylic polymer-containing component can include 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, butyl acrylate-acrylonitrile copolymer and the like. 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 further examples include acrylic block copolymers composed of methacrylate-acrylate. 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 having the above-mentioned polar group partially introduced therein. Since the modified product has further improved compatibility with the epoxy compound, the adhesive strength is further improved.

Among them, the seventh 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 (meth) acrylic. It can be an 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 strength. Because it can be done.

The expression of the above effects can be estimated as follows. In conventional adhesives, an acrylic polymer is 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 has 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 incompatible 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 an 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 moiety is the polymer block A and the incompatible moiety 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. -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. Or, 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 state of being compatible with each other. By developing 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 above (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.). You can ask.
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. Immergut, 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, but may be a homopolymer among them. 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 in which Tg is in a predetermined range, and may be, for example, acrylic. Acrylic acid ester monomers such as butyl 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 above (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. The temperature may be within the range of 40 ° C. or higher and 150 ° C. or lower.

Further, the second polymer portion contained in the above (meth) acrylic acid ester copolymer may be a homopolymer or a copolymer, but may be a homopolymer among them. .. The monomer component constituting the second polymer portion may be any monomer component as long as it can obtain 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.

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 seventh component can be appropriately set according to the adhesiveness and cohesive force required for the first adhesive layer, and above all, the mass average molecular weight of the other components contained in the first adhesive layer is higher than the mass average molecular weight of the other components. It can be made larger, and further can be made larger than the mass average molecular weight of the curable material contained in the first adhesive layer. This is because the film-forming property is left to the seventh component, and the curable material contained in the first adhesive layer needs to work as a plastic component. Further, it is desirable that the seventh component is compatible with the component contained in the second adhesive layer. Specifically, the mass average molecular weight of the seventh component can be in the range of 10,000 or more and 900,000 or less, and in particular, in the range of 30,000 or more and 500,000 or less. If the mass average molecular weight of the seventh 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 seventh 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 seventh component in the first adhesive layer is appropriately determined according to the type of the seventh component, the components contained in the first adhesive layer, the adhesiveness, cohesiveness, viscosity, etc. required for the first adhesive layer. It is possible to adjust. For example, when the first adhesive layer contains a curable organic compound such as an acrylic compound or an epoxy compound as a curable material and contains the above (meth) acrylic acid ester copolymer as a seventh component, the first adhesive layer is contained in the first adhesive layer. 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 100 parts by mass of the curable organic compound. When both are blended in 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 in the stage before contact curing, which is an 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 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 retention characteristics.

Further, for example, when the second adhesive layer contains the third component and the first adhesive layer does not contain the fourth component, the content of the seventh component in the first adhesive layer is the first component in the first adhesive layer. Alternatively, the content may be within the range of 10 parts by mass or more and 500 parts by mass or less with respect to 100 parts by mass of the second component. The suitable content varies depending on the average molecular weight of the seventh component, but can be approximately within the above range. If the content of the seventh 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, it may cause a decrease in the strength of the first adhesive layer. May be.

(F) Eighth component The eighth component is a polymer having compatibility with the components contained in the second adhesive layer. The second adhesive layer may further contain the eighth component. Further, the eighth component can have compatibility with the component contained in the first adhesive layer. The reason, the specific example of the eighth component, and the content of the eighth component are the same as those of the seventh 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 either an acrylic compound or an epoxy compound as a curable material, the effect of the eighth component can be more exerted.

The mass average molecular weight of the eighth component can be larger than the mass average molecular weight of the other components contained in the second adhesive layer, and further than the mass average molecular weight of the curable material contained in the second adhesive layer. Can be made larger. The reason, the specific range of the mass average molecular weight, and the measuring method thereof are the same as those of the above-mentioned seventh component, and thus the description thereof is omitted here.

The eighth component contained in the second adhesive layer and the seventh component contained in the first adhesive layer may be the same component or different components. When the 7th component and the 8th component are the same component, the same component is most likely to cause phase diffusion, which is advantageous in terms of reaction rate. It is also advantageous in terms of cost. Further, when the 7th component and the 8th 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 in particular, 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 described in the section of the seventh component above.

When the 7th component and the 8th component are different components, the 7th component and the 8th component are appropriately used depending on the material and properties of the adherend to which the first adhesive layer and the second adhesive layer are bonded. It is possible to select. In particular, it is effective when the materials and properties of the adherend to which the first adhesive layer and the second adhesive layer are bonded are different, that is, when different types of members are bonded using an adhesive sheet set. Further, as described in the fourth and fifth embodiments of the method for manufacturing an article described later, one adhesive layer is impregnated with another member, or the first adhesive layer and the second adhesive layer are brought into contact with each other. By arranging another member at the interface, when fixing another member to one member or repairing or reinforcing one member by another member, the material and properties of one member and the other member can be changed. It is effective even if they are different. Since different types of members have been described in the section of the fourth component described above, the description thereof is omitted here.

When the 7th component and the 8th component are different components, the 7th component and the 8th component are appropriately selected according to the physical properties and functions required for the first adhesive layer and the second adhesive layer, respectively. be able to. For example, as described in the fourth and fifth embodiments of the method for manufacturing an article described later, when the first adhesive layer and the second adhesive layer are laminated on a member, one of the adhesive layers on the outermost surface is used. By appropriately selecting the 7th component and the 8th component so that the hardness after curing is harder than the hardness after curing of the other adhesive layer arranged on the member side, the adhesive layer to be the outermost surface can be obtained. Hard coat property can be imparted.

(G) Other components The first adhesive layer and the second adhesive layer are, for example, a liquid material (Liquid A) containing the first component and the third component, and a liquid material containing the second component and the fourth component (the liquid material A). It can be formed by using each liquid material of a two-liquid separate coating type adhesive composed of two types of liquid B). 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 redox-based catalyst reducing agent, an acrylic compound, and the like. Examples thereof include a two-component main agent type acrylic adhesive (SGA) composed of a liquid A containing a radical polymerization initiator, a liquid B containing an acrylic compound and a redox-based catalyst reducing agent, and a liquid B. The two-component separate coating type adhesive is not limited to this, and can be appropriately selected depending on the material of the adherend and the like.

The first adhesive layer and the second adhesive layer also include inorganic particles such as silica and glass beads, a chain transfer agent, a curing accelerator, a flame retardant, a thickener, a heat radiating agent, an insulating agent, a conductive agent, and a strength improving agent. It may contain any component such as a fiber (particularly chopped fiber), a tackifier such as a silicone compound, an antioxidant, and a reaction inhibitor.

The first adhesive layer and the second adhesive layer may contain a colorant. When one of the colored layers contains a colorant, by coloring one of the adhesive layers, it is possible to easily distinguish it from the adhesive sheet having the other adhesive layer, and it is possible to prevent work mistakes during construction. Can be done. When both adhesive layers contain a colorant, the colorant contained in one adhesive layer is different in color from the colorant contained in the other colorant from the viewpoint of facilitating the identification of the adhesive sheet. be able to. That is, the first adhesive layer and the second adhesive layer can have different colors. Further, as described in the fourth and fifth embodiments of the method for manufacturing an article described later, when the first adhesive layer and the second adhesive layer are laminated on the member, the first adhesive layer and the second adhesive layer are laminated. By containing a colorant in at least one of the adhesive sheets, the visibility of the adhesive sheet can be enhanced, the location where the adhesive sheet is attached can be easily confirmed, 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 adhesive layer can contain a pigment. This is because by including the pigment as the colorant, the pigment can absorb ultraviolet rays and prevent the deterioration of the members by ultraviolet rays.

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

(2) Properties The first adhesive layer and the second 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 can exhibit desired functions such as adhesiveness.

The thicknesses of the first adhesive layer and the second adhesive layer can be appropriately set according to the type of adherend and the like, and the amounts required for the curing reaction due to the contact between the first adhesive layer and the second adhesive layer are each. It suffices if it is possible to contain an ingredient.

The thickness of one adhesive layer containing the first component can be made larger than the thickness of the other adhesive layer containing the second component. As described above, the content of the first component in one adhesive layer can be higher than the content of the second component in the other adhesive layer. Therefore, for example, when one adhesive layer contains the first component and the third component and the other adhesive layer contains the second component and the fourth component, or when one adhesive layer contains the first component and the third component. When it is contained and the other adhesive layer contains the second component and does not contain the fourth component, the content of the first component in one adhesive layer is the content of the second component in the other adhesive layer. By increasing the amount, the thickness of one of the adhesive layers containing the first component can be increased. Further, since the second component acts as a catalyst even in a small amount, the adhesive layer containing the second component can be made thin.

Further, in general, the thickness and the strength of the adhesive force are in a proportional relationship, and the adhesive layer having a large thickness has a strong adhesive force and becomes a soft layer, and the adhesive layer having a small thickness has a weak adhesive force and becomes a hard layer. When the first adhesive layer and the second adhesive layer have the above-mentioned thickness relationship, that is, when combining adhesive layers having different flexibility, even if they are bonded once, if the curing reaction is not completed, The adhesive surface between the first adhesive layer and the second adhesive layer can be peeled off and reattached, and the reworkability can be improved. Further, since the first adhesive layer and the second adhesive layer have the above-mentioned thickness relationship, the adhesive layer having a large thickness has a strong adhesive force and becomes a soft layer, so that the stress can be easily dispersed as a whole. It is possible to increase the holding force when the first adhesive layer and the second adhesive layer are bonded so as to be in contact with each other. By increasing the holding power between the first adhesive layer and the second adhesive layer, the bonded state is maintained by the adhesive strength of both until the contact curing of the first adhesive layer and the second adhesive layer is completed. Can be done. Above all, when the adhesive surface between the first adhesive layer and the second adhesive layer becomes a vertical surface or a normal surface, it is possible to prevent peeling from occurring on the adhesive surface due to its own weight until the contact curing is completed. .. Further, for example, when the first adhesive layer contains the first component and the third component, the second adhesive layer contains the second component, and the fourth component is not contained, the thickness of the first adhesive layer is the first. When the thickness is larger than the thickness of the two adhesive layers, the first adhesive layer having a strong adhesive force easily adheres to the second adhesive layer having a weak adhesive force, and the component contained in the second adhesive layer having a weak adhesive force has an adhesive force. Since it is easy to move to the strong first adhesive layer, the curing reaction by contact is easy to proceed.

The thickness of the adhesive layer containing the first component is not particularly limited as long as it can exert its function, and is appropriately selected according to the component contained in the adhesive layer. For example, when one adhesive layer contains the first component and the third component and the other adhesive layer contains the second component and the fourth component, or when one adhesive layer contains the first component and the third component. However, when the other adhesive layer contains the second component and does not contain the fourth component, the thicker the thickness of the one adhesive layer containing the first component, the stronger the adhesiveness can be exhibited. The adhesive strength can be made stronger than that of the other adhesive layer containing two components. Further, for example, when one of the adhesive layers containing the first component does not contain either the third component and the fourth component, the reactivity of contact curing with the other adhesive layer containing the second component and the third component is determined. From the viewpoint of increasing, the thickness may be small. This is because when the first component comes into contact with the other adhesive layer, the first component is likely to move to the other adhesive layer, so that the curing reaction is likely to proceed and the reactivity is improved. Since the first component can act as a catalyst even in a small amount, one adhesive layer containing the first component can be made thinner than the other adhesive layer, and the adhesive strength can be weakened. Specifically, the thickness of the adhesive layer containing the first component can be 2 μm or more, particularly 5 μm or more, particularly 10 μm, or even 20 μm or more. Further, the thickness can be 200 μm or less, particularly 150 μm or less, particularly 100 μm or less.

The thickness of the adhesive layer containing the second component is not particularly limited as long as it can exert its function, and is appropriately selected according to the component contained in the adhesive layer. For example, when one adhesive layer contains the second component and the third component and the other adhesive layer contains the first component and the fourth component, or when one adhesive layer contains the second component and the third component. However, when the other adhesive layer contains the first component and does not contain the fourth component, one adhesive layer containing the second component can exhibit stronger adhesiveness as the thickness increases. The adhesive strength can be made stronger than that of the other adhesive layer containing one component. Further, for example, when one adhesive layer containing the second component does not contain either the third component and the fourth component, the reactivity of contact curing with the other adhesive layer containing the first component and the third component is determined. From the viewpoint of increasing, the thickness may be small. This is because when the second component comes into contact with the other adhesive layer, the second component is likely to move to the other adhesive layer, so that the curing reaction is likely to proceed and the reactivity is improved. Since the second component can act as a catalyst even in a small amount, one adhesive layer containing the second component can be made thinner than the other adhesive layer, and the adhesive strength can be weakened. Specifically, the thickness of the adhesive layer containing the second component can be 2 μm or more, particularly 5 μm or more, particularly 10 μm, or even 20 μm or more. Further, the thickness can be 200 μm or less, particularly 150 μm or less, particularly 100 μm or less.

Further, when the adherend surface of the adherend is a rough surface, the thicknesses of the first adhesive layer and the second adhesive layer can be increased, specifically, the height difference of the unevenness of the adherend surface or more. Can be the thickness of. If the first adhesive layer and the second adhesive layer do not have a thickness equal to or greater than the height difference of the unevenness of the adherend surface, the first adhesive layer and the second adhesive layer cannot follow the unevenness, and the first adhesive layer and the first adhesive layer This is because the adhesive area between the second adhesive layer and the adherend surface is reduced, so that the adherend cannot be held for a desired period.

The first adhesive layer and the second adhesive layer may or may not have adhesiveness before curing, but may have adhesiveness. Since the 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 causes the members and the adhesive layers to be bonded to each other 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, "adhesive" is a concept included in "adhesive". Adhesion is sometimes used to mean a temporary adhesion phenomenon, while adhesion is sometimes used to mean a substantially 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. The adhesive layer having adhesiveness 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.

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.

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 the adherend, and the arrangement mode. The adhesive strength of the first adhesive layer and the second 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, particularly 0.1 N / inch or more and 40 N / inch. It can be within the following range.

The adhesive force to the adherend can be measured by the following method. For an adhesive sheet having no separator on both sides, a separator (for example, PET separator PET28 × IJ0 manufactured by Nipper), which is a release film, is attached before measurement. 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 glued together 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:: temperature 23 ° C, humidity 50%, test method of peeling tape and sheet 180 ° from stainless steel test plate) of tape / adhesive sheet test method) and adhesive strength test method 1 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.

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 combination of the adhesive strengths of the first adhesive layer and the second adhesive layer can be appropriately selected according to the functions required between the two adhesive layers. For example, the adhesive strength of the adhesive layer containing the first component can be made stronger than the adhesive strength of the adhesive layer containing the second component. This is because, as described above, reworkability, retention characteristics and reactivity can be enhanced.

Further, when one of the first adhesive layer and the second adhesive layer contains the third component and the other does not contain the fourth component, the adhesive layer containing the third component can be made strongly adhesive. .. Here, the present inventor has determined that in the curing reaction due to the contact between the first adhesive layer and the second adhesive layer in the above case, the adhesive strength of the adhesive layer containing the third component contributes to the reactivity. I found out. That is, when the adhesive layer containing the third component is strongly adhesive, the strongly adhesive adhesive layer has high flexibility, so that it becomes easy to be compatible regardless of the adhesive strength of the other adhesive layer, and the other The components contained in the adhesive layer are likely to move to the strongly adhesive adhesive layer side. Therefore, the curing reaction is facilitated, 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 surface between the adhesive layers becomes a vertical surface or a 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.

The adhesive layer can be classified into strong adhesiveness, medium adhesiveness, and weak adhesiveness according to the magnitude of the adhesive strength. Specifically, the adhesive strength is 5N / inch or more and 50N / inch or less is strongly adhesive, and the adhesive strength is 1N / inch or more and less than 5N / inch is medium adhesive, 0.05N / inch or more and 1N. The range of less than / inch can be weakly adhesive. Medium adhesiveness can be included in strong adhesiveness or weak adhesiveness depending on the application and physical properties.

Further, as described in the fourth and fifth embodiments of the method for manufacturing an article described later, when the first adhesive layer and the second adhesive layer are laminated on a member, one of the adhesive layers which is the outermost surface is used. The hardness after curing can be made harder than the hardness after curing of the other adhesive layer arranged on the member side. This is because it is possible to impart a hard coat property to the adhesive layer that is the outermost surface.

2. 2. The first separator and the second separator first adhesive sheet may have a first separator arranged on at least one surface side of the first adhesive layer. Further, the second adhesive sheet may have a second separator arranged on at least one surface side of the second adhesive layer.

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, for example, 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 a fluorine film. Further, the separator may be a single layer exemplified above and has a mold release property, but the release layer is formed on one side or both sides of a base material for release paper such as high-quality paper, coated paper, impregnated paper, and plastic film. You may use the laminated body which formed the above. The release layer is not particularly limited as long as it is a material having releasability, and for example, a silicone compound, an organic compound modified silicone compound, a fluorine compound, an aminoalkido compound, a melamine compound, an acrylic compound, a polyester compound, and a long-chain alkyl. There are compounds and the like. These compounds can be emulsion type, solvent type or solvent-free type.

When the adherend surface of the adherend is a rough surface, the separator can have flexibility. This is because the separator can follow the elongation of the adhesive layer when the adhesive sheet is attached to the adherend. 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 adherend is bonded. This is because it is possible to prevent the adhesive layer from being deteriorated by being irradiated with ultraviolet rays or the like until the bonding step. Examples of the separator having a light-shielding property include an aluminum foil separator, an aluminum-deposited film, a paper separator, a colored separator, a film separator containing an ultraviolet absorber, and the like.

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

The first separator in the first adhesive sheet and the second separator in the second adhesive sheet may have the same color or may have 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 adherend may have separators on both sides of the adhesive layer. When the separators are provided on both sides of the adhesive layer, 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. 1st Adhesive Sheet and 2nd Adhesive Sheet The 1st adhesive sheet and the 2nd adhesive sheet have an adhesive composition containing, for example, two types of liquid materials such as a two-component separate coating type adhesive, for example, a first component and a third component. It can be formed by applying an adhesive composition containing a substance and a second component and a fourth component to one side of separate separators and drying them. The adhesive composition may contain a solvent, if necessary.

The method for applying the adhesive composition is not particularly limited, and a known printing method or coating method can be used. Further, the drying conditions of the coating layer can be set to such a condition that the solvent contained in the coating layer can be sufficiently volatilized, and can be appropriately set according to the composition.

The adhesive sheet can 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. Is.

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

B. Second Aspect of Adhesive Sheet Set The second aspect of the adhesive sheet set of the present disclosure is an adhesive sheet set having a first adhesive sheet provided with a first adhesive layer and a second adhesive sheet provided with a second adhesive layer. One of the first adhesive layer and the second adhesive layer contains a fifth component which is a curable material, and the other contains a sixth component which is a curable material, and the first adhesive sheet and the second adhesive sheet. The adhesive sheet is configured so that the first adhesive layer and the second adhesive layer are cured and adhered by contacting each other.

According to the adhesive sheet set of the present disclosure, the first adhesive layer of the first adhesive sheet and the second adhesive layer of the second adhesive sheet can be cured by contacting each other, and the strong adhesion developed by the curing can be achieved. It can be firmly adhered with force.

The adhesive sheet set composed of the first adhesive sheet and the second adhesive sheet includes an adhesive layer formed from one of two types of liquid materials of a two-component separate coating type adhesive, and an adhesive layer formed from the other. Is sorted into each adhesive sheet. By individually forming the two types of liquid materials of the two-component separate coating type adhesive into a sheet in this way, the same effect as that described in the above-mentioned "A. First aspect of the adhesive sheet set" is obtained. be able to.

In this embodiment, since the curable material is previously contained in the first adhesive layer and the second adhesive layer, respectively, it is possible to improve the reactivity. For example, the curing speed can be dramatically increased as compared with the case where the curable material is contained in only one of the adhesive layers. Further, when the first adhesive layer and the second adhesive layer come into contact with each other, it is not necessary to consider the ease of diffusion of the curable material into other adhesive layers, so that the curable material has a large molecular weight and is difficult to diffuse. When it is an ingredient, it is advantageous. Further, since both the first adhesive layer and the second adhesive layer contain a curable material, substantially uniform curing is possible. Further, since both the first adhesive layer and the second adhesive layer contain a curable material, it is possible to reduce the variation in the mixed state of each component, so that the film strength and the glass transition temperature due to the decrease in the crosslink density can be reduced. It is possible to suppress the decrease and stabilize the physical properties of the adhesive layer after curing.

Hereinafter, each configuration of the first aspect of the adhesive sheet set of the present disclosure 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. Further, one of the first adhesive layer and the second adhesive layer contains a fifth component which is a curable material, and the other contains a sixth component which is a curable material. Hereinafter, the materials and properties of the first adhesive layer and the second adhesive layer will be described.

(1) Material The first adhesive layer and the second adhesive layer contain a fifth component, which is a curable material, and a sixth component, which is a curable material.

(A) Fifth component The fifth component is a curable material. Since the fifth component can be the same as the third component of the first aspect, the description thereof is omitted here.

(B) Sixth component The sixth component is a curable material. Since the sixth component can be the same as the fourth component of the first aspect, the description thereof is omitted here.

The fifth component and the sixth component may be the same or different. The cases where the fifth component and the sixth component are the same and different can be the same as when the third component and the fourth component of the first aspect are the same and different. The explanation is omitted.

(C) Seventh component The seventh component is a polymer having compatibility with the components contained in the first adhesive layer. The first adhesive layer may further contain a seventh component. Since the seventh component has been described in the first aspect above, the description thereof is omitted here.

(D) Eighth component The eighth component is a polymer having compatibility with the components contained in the second adhesive layer. The second adhesive layer may further contain the eighth component. Since the eighth component has been described in the first aspect above, the description thereof is omitted here.

The eighth component contained in the second adhesive layer and the seventh component contained in the first adhesive layer may be the same component or different components. The cases where the seventh component and the eighth component are the same and different are described in the first aspect, and thus the description thereof is omitted here.

(E) Other components The first adhesive layer and the second adhesive layer may contain the same components as those in the first aspect in addition to the above components.

(2) Properties The properties of the first adhesive layer and the second adhesive layer can be the same as those described in the first aspect.

2. 2. The first separator and the second separator first adhesive sheet may have a first separator arranged on at least one surface side of the first adhesive layer. Further, the second adhesive sheet may have a second separator arranged on at least one surface side of the second adhesive layer. The separator may be the same as that described in the first aspect.

3. 3. First Adhesive Sheet and Second Adhesive Sheet The methods for producing the first adhesive sheet and the second adhesive sheet can be the same as those described in the first aspect.

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

II. Manufacturing Method of Article Next, a manufacturing method of the article of the present disclosure will be described. The method of manufacturing an article is roughly classified into five embodiments. Hereinafter, each embodiment will be described separately.

A. First Embodiment of the Article Manufacturing Method The first embodiment of the article manufacturing method uses a first adhesive layer and a second adhesive layer that can be cured and adhered by contacting each other, and the first member and the first member and the second adhesive layer are used. A method for manufacturing an article in which a second member is bonded, wherein 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 preparatory step for preparing a member with an adhesive sheet, and a second adhesion 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. The second preparation step of preparing the member with a sheet, the other surface of the first adhesive layer of the member with the first adhesive sheet, and the other surface of the second adhesive layer of the member with the second adhesive sheet. It has a bonding step of bonding.

The first embodiment of the method for manufacturing an article is roughly classified into two modes according to the configuration of the adhesive layer. The first aspect of the first embodiment of the method for manufacturing an article is a method using the first aspect of the above-mentioned adhesive sheet set, which is the above-mentioned method for manufacturing an article, and is the above-mentioned first adhesive layer and the above-mentioned second adhesion. The layer contains the first component, which is a latent curing agent, and the second component, which is a material that activates the latent curing agent, and is the first adhesive layer or the second adhesive layer. One of the above contains a third component which is a curable material. Further, the second aspect of the first embodiment of the method for manufacturing an article is a method using the second aspect of the above-mentioned adhesive sheet set, which is the above-mentioned method for manufacturing an article, and is the above-mentioned first adhesive layer and the above-mentioned first. The two adhesive layers contain a fifth component, which is a curable material, and a sixth component, which is a curable material.

FIG. 2 is a process diagram showing an example of the first embodiment of the method for manufacturing an article. As illustrated in FIG. 2, first, the member 20 with the first adhesive sheet is prepared (FIG. 2A, 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 one surface of the first member 1. As shown in FIG. 2A, the first adhesive sheet 11 may have a first separator 21 arranged on at least one surface side of the first adhesive layer 22. Further, separately, the member 30 with the second adhesive sheet is prepared (FIG. 2 (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 one surface of the second member 2. As shown in FIG. 2B, the second adhesive sheet 12 may have a second separator 23 arranged on at least one surface side of the second adhesive layer 24. The first preparation step and the second preparation 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. 2C to 2). (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 of the first adhesive layer 22 and the second adhesive layer 24, the respective separators are used. Is peeled off and pasted 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 diffuse 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. 2 (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 first embodiment of the method for manufacturing an article, 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, a curing reaction is caused by contact. The members can be bonded to each other with a strong adhesive force developed by advancing and curing. Further, since the adhesive sheet is attached to each member with an adhesive sheet, it is not necessary to mix the two liquids as in the case of a two-component adhesive, and the members can be easily attached to each other. be. 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 depending on 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.

Further, in the method for manufacturing an article of the present embodiment, 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, the first adhesive layer and the second adhesive layer are used. It is possible to install according to the degree of adhesiveness of. Hereinafter, a construction example using the method for manufacturing an article of the present embodiment will be described with reference to an example.

The first example of the construction example using the method for manufacturing the article of the present 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. 3, the adherend surface of the second member 2 is a vertical surface. The reference numerals in FIG. 3 are the same as those in FIG. 2.

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 surface or the normal surface. It can be within the following range. In the case of the adhered 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 member 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 bond and hold the first member and the second member. Further, by adjusting the adhesive force between the first adhesive layer and the second adhesive layer, it is possible to reattach after the first adhesive layer and the second adhesive layer are bonded before the curing. Further, by making the first adhesive layer and the second adhesive layer highly viscous or low viscosity, it is possible to translate the first adhesive layer and the second adhesive layer with respect to the adherend surface in a bonded state, and the position can be adjusted.

The second example of the construction example using the method of manufacturing the article of this 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. 4, the adherend surface of the second member 2 is a horizontal plane. The reference numerals in FIG. 4 are the same as those in FIG. 2.

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, especially within the range of -15 degrees or more and +15 degrees or less with respect to the horizontal plane. can do. In the case of the adherent 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. It is possible to maintain the bonded state of the first member and the second member. 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 after the first adhesive layer and the second adhesive layer are bonded before the curing. Further, by making the first adhesive layer and the second adhesive layer highly viscous or low viscosity, it is possible to translate the first adhesive layer and the second adhesive layer with respect to the adherend surface in a bonded state, and the position can be adjusted.

The first adhesive sheet and the second adhesive sheet can be the same as those described in the above "I. Adhesive sheet set". Hereinafter, each step in the first embodiment of the method for manufacturing an article will be described.

1. 1. 1st Preparation Step and 2nd Preparation Step In the 1st preparation step in the method for manufacturing an article of the present embodiment, one 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 surfaces are bonded. 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 preparation step and the second preparation step can be performed in no particular order.

In the first preparatory step and the second preparatory step, a member with an adhesive sheet to 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.

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 glued together. When an adhesive sheet having separators arranged on both sides of the adhesive layer is used, one of the separators of the single-wafer adhesive sheet is peeled off to expose the adhesive layer, and a member is bonded onto the adhesive layer. be able to.

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 adhered 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, when the adhesive layer has adhesiveness, it may be bonded by heat-pressing it with an iron or the like, or it may be bonded by pressing it with a roller while lightly vibrating it. The adhesive layer can easily enter 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, if the adhesive layer of the adhesive sheet (for example, the first adhesive layer of the first adhesive sheet) has a predetermined adhesive force, the other member with an adhesive sheet (for example, for example). It is possible to have a positioning step of determining the bonding position of the second adhesive sheet-attached member). By exhibiting the desired adhesive strength of the adhesive layer, the adhesive sheet is reattached on the member in the preparation step so that the bonding position of the other member with the adhesive sheet becomes the desired position when the bonding process is performed. Is possible. For example, if the first adhesive layer of the first adhesive sheet exhibits a desired adhesive strength, the first preparatory step includes a first adhesive sheet bonding step and a positioning step of determining a bonding position of the second adhesive sheet-attached member. , Both can be included. The same applies to the second preparation step. At this time, the member to be bonded to the adhesive sheet having the adhesive layer can be a fixing member.

2. 2. Laminating Step In the laminating step in the method for manufacturing an article of the present embodiment, the laminating step of the other surface of the first adhesive layer of the first adhesive sheet-attached member and the second adhesive layer of the second adhesive sheet-attached member. This is the process of bonding to the other surface. In this step, the first adhesive layer and the second adhesive layer are cured by coming into contact with each other, and the cured adhesive layer formed by the contact curing can develop a strong adhesive force, and the members are adhered 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 of the second adhesive layer. When the second separator is arranged on the side opposite to the two member side, the first separator of the member with the first adhesive sheet and / or the second separator of the member with the second adhesive sheet is peeled off. The exposed surface of the first adhesive layer and the surface of the second adhesive layer are bonded together.

The method of bonding the first adhesive layer on 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, on the member with the first adhesive sheet. It is possible to use a method in which the first adhesive layer of No. 1 and the second adhesive layer of the member with the second adhesive sheet are opposed to each other and bonded from directly above. Further, as another bonding method, the first adhesive layer on the member with the first adhesive sheet and the second adhesive layer of the member with the second adhesive sheet face each other, and one of them is opposed to the adherend surface of the other. It can be attached by sliding it in the parallel direction. The above bonding method is suitable when the bonding surface between the first member and the second member is a horizontal plane.

This step is a positioning step in which one of the first adhesive sheet-attached member and the second adhesive sheet-attached member is reattached and positioned according to the strength of the adhesive force between the first adhesive layer and the second adhesive layer. May have.

The first adhesive layer and the second adhesive layer can undergo a curing reaction by contact. The curing temperature of the first adhesive layer and the second adhesive layer can include normal 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 the normal temperature, it is possible to eliminate the need for heating and cooling, so that the production of the article can be simplified. Further, the first adhesive layer and the second adhesive layer may be heated in a contact state to accelerate curing. The heating temperature can be appropriately set according to the composition of the first adhesive layer and the second adhesive layer, but 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. This is because if the heating temperature is too high, the flowability of the adhesive layer becomes large, and the adhesive protrudes from the adherend surface, and the curing proceeds in the protruding state, which may cause a poor appearance. Further, depending on the components contained in the adhesive layer such as the small molecule 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 may not be obtained so much, and it may be difficult to shorten the process time.

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 sufficiently cured to develop a strong adhesive force. 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 obtained by curing the curable material contained in the first adhesive layer and 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, and above all, the tensile shear strength. Can be high. 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.

B. Second Embodiment of the Article Manufacturing Method The second embodiment of the article manufacturing method uses a first adhesive layer and a second adhesive layer that can be cured and adhered by contacting each other, the first member and the second embodiment. A method for manufacturing an article in which a second member is bonded, wherein one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer is bonded to the first member. One of the second adhesive layer of the second adhesive sheet having the second adhesive layer on the other surface of the first adhesive layer of the first adhesive sheet-attached member and the preparatory step of preparing the adhesive sheet-attached member. It has a second adhesive sheet bonding step of bonding surfaces and a second member bonding step of bonding the second member to the other surface of the second adhesive layer of the second adhesive sheet.

The second embodiment of the method for manufacturing an article is roughly classified into two modes according to the configuration of the adhesive layer. The first aspect of the second embodiment of the method for manufacturing an article is a method using the first aspect of the above-mentioned adhesive sheet set, which is the method for manufacturing the above-mentioned article, and is the above-mentioned first adhesive layer and the above-mentioned second adhesion. The layer contains the first component, which is a latent curing agent, and the second component, which is a material that activates the latent curing agent, and is the first adhesive layer or the second adhesive layer. One of the above contains a third component which is a curable material. In addition, the second aspect of the second embodiment of the method for manufacturing an article is a method using the second aspect of the above-mentioned adhesive sheet set, which is the above-mentioned method for manufacturing an article, and is the above-mentioned first adhesive layer and the above-mentioned first. The two adhesive layers contain a fifth component, which is a curable material, and a sixth component, which is a curable material.

FIG. 5 is a process diagram showing an example of a second embodiment of a method for manufacturing an article. As illustrated in FIG. 5, first, one surface of the first adhesive layer 22 of the first adhesive sheet 11 having the first adhesive layer 22 is bonded to one surface of the first member 1. 1 Prepare the member 20 with an adhesive sheet (FIG. 5 (a), preparation step). As shown in FIG. 5A, the first adhesive sheet 11 may have a first separator 21 arranged on at least one surface side of the first adhesive layer 22, in this case, the first. The first separator 21 may be arranged on the other surface of the adhesive layer 22 (the surface opposite to the first member 1 side). 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 (FIG. 5). (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. 5B, the second adhesive sheet 12 may have a second separator 23 arranged on at least one surface side of the second adhesive layer 24. 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 second adhesive sheet 12 (FIG. 5 (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 develops 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. 5C indicates a region (cured region) cured by contact between the first adhesive layer 22 and the second adhesive layer 24.

According to the second embodiment of the method for manufacturing an article, 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, a curing reaction is caused by contact. The members can be bonded to each other with a strong adhesive force developed by advancing and curing. Further, since the first adhesive sheet and the second adhesive sheet are bonded and laminated on the first member, it is not necessary to mix the two liquids unlike the two-component adhesive, and the bonding 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 first adhesive sheet and the second adhesive sheet can be the same as those described in the above "I. Adhesive sheet set". Hereinafter, each step in the method for manufacturing an article of the present embodiment will be described.

1. 1. Preparation step In the preparation step in the method for manufacturing an article of the present 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 the process of preparing a member with a sheet.

When the first aspect of the above-mentioned adhesive sheet set is used, the first adhesive layer in the first adhesive sheet may be an adhesive layer containing the first component, or may be an adhesive layer containing the second component. good. Further, when the second aspect of the above-mentioned adhesive sheet set is used, the first adhesive layer in the first adhesive sheet may be an adhesive layer containing the fifth component and the sixth component, and the seventh component and the eighth component may be used. It may be an adhesive layer containing an ingredient.

When this step has a first adhesive sheet bonding step described later, the position of the first adhesive layer is adjusted by adjusting the adhesive force or the cohesive force to reattach the first adhesive sheet on the first member. It will be possible to do. At this time, the first member can be a fixing member. Further, by making the first adhesive layer low-viscosity or high-viscosity, when the second adhesive layer of the second adhesive sheet is bonded onto the first adhesive layer, it is parallel to the adherend surface of the first adhesive layer. The second adhesive sheet can be slid and moved in the direction.

In this step, a member with a first adhesive sheet to which the first adhesive sheet is previously bonded to the first member may be prepared. Further, in this step, a first adhesive sheet provided with a first separator and a first adhesive layer provided on at least one surface side of the first separator is used, and the first separator of the first adhesive layer is used. It may have a first adhesive sheet bonding step of bonding a non-arranged surface to the first member. The first adhesive sheet bonding step is the same as the adhesive sheet bonding step described in the above-mentioned "A. First embodiment of the method for manufacturing an article 1. First preparation step and second preparation step". Therefore, the description here is omitted.

2. 2. Second Adhesive Sheet Bonding Step In the second adhesive sheet bonding step in the method for manufacturing an article of the present embodiment, the second adhesive layer is formed 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 to be provided. In this step, the first separator of the member with the first adhesive sheet is peeled off, and the surface of the first adhesive layer exposed by peeling off the first separator is on one side of the second separator and the second separator. It can be a step of bonding the surfaces of the second adhesive sheet having the second adhesive layer provided on the surface of the second adhesive sheet on which the second separator is not arranged.

When the first aspect of the above-mentioned adhesive sheet set is used, the above-mentioned second adhesive layer is an adhesive layer containing the first component or an adhesive layer containing the second component, depending on the composition of the first adhesive layer. Can be done. Further, when the second aspect of the above-mentioned adhesive sheet set is used, the above-mentioned second adhesive layer is an adhesive layer containing the fifth component and the sixth component or an adhesive layer containing the seventh component and the eighth component. Can be done.

By adjusting the adhesive force or the cohesive force, the second adhesive layer can be reattached when it is attached to the first adhesive layer of the member with the first adhesive sheet, and can be reattached in the bonding step described later. , The second member can be reattached. Further, by making the second adhesive layer low-viscosity or high-viscosity, in the bonding step described later, when the second member is bonded to the second adhesive layer, it is applied to the adherend surface of the second adhesive layer. The second member can be slid and moved in the parallel direction to be bonded.

The method of bonding 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 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 second adhesive sheet roll wound in a roll shape with the second adhesive layer as a winding inner surface is used, and a required amount is unwound from the second adhesive sheet roll. Therefore, a method of bonding the second adhesive layer and the first adhesive layer and then cutting the adhesive layer can be used. Further, using a single-wafered second adhesive sheet in which the second separator is arranged on both sides of the second adhesive layer, one of the second adhesive sheets of the second adhesive sheet is peeled off to form an exposed second adhesive layer. A method of bonding to the first adhesive layer can be used.

In this step, the first adhesive layer and the second adhesive layer undergo a curing reaction due to 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 bond the second member to the second adhesive layer.

3. 3. Second member bonding step The second member bonding step in the method for manufacturing an article of the present embodiment is a step of bonding the second member to the other surface of the second adhesive layer of the second adhesive sheet. ..

The method of adhering the other surface of the second adhesive layer to the second member is not particularly limited. For example, the second member can be attached to the adherend surface of the second adhesive layer arranged on the first member from directly above. When the second adhesive layer exhibits low viscosity or high viscosity, one of the first member or the second member on which the second adhesive layer is arranged is fixed and the other member is fixed. It can be attached by sliding it in a direction parallel to the adherend surface of the member. Such a method of bonding by sliding movement is suitable when the bonding surface between the first member and the second member is a horizontal plane.

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. Further, the second member may be bonded to the other surface of the second adhesive layer and then heated to accelerate the curing reaction. The curing time, curing temperature, and heating temperature are the same as those described in the above-mentioned "A. First embodiment of the method for producing an article".

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 between the first member and the second member. A hardened adhesive layer is formed on the surface. The details of the cured adhesive layer and the contents not described in the method for manufacturing the article of the present embodiment are the same as the contents described in the above-mentioned "A. First embodiment of the method for manufacturing the article".

C. Third Embodiment of the Article Manufacturing Method The third embodiment of the article manufacturing method uses a first adhesive layer and a second adhesive layer that can be cured and adhered by contacting each other, and the first member and the second adhesive layer are used. A method for manufacturing an article in which a second member is bonded, wherein one surface of the first adhesive layer having the first adhesive layer and the second adhesive sheet having the second adhesive layer are described. The preparatory step of preparing a multilayer adhesive sheet to which one surface of the second adhesive layer is bonded, and the first step of bonding the first member to the other surface of the first adhesive layer of the multilayer adhesive sheet. It has a bonding step and a second bonding step of bonding the second member to the other surface of the second adhesive layer of the multilayer adhesive sheet.

The third embodiment of the method for manufacturing an article is roughly classified into two modes according to the configuration of the adhesive layer. The first aspect of the third embodiment of the method for manufacturing an article is a method using the first aspect of the above-mentioned adhesive sheet set, which is the above-mentioned method for manufacturing an article, and is the above-mentioned first adhesive layer and the above-mentioned second adhesion. The layer contains the first component, which is a latent curing agent, and the second component, which is a material that activates the latent curing agent, and is the first adhesive layer or the second adhesive layer. One of the above contains a third component which is a curable material. Further, the second aspect of the third embodiment of the method for manufacturing an article is a method using the second aspect of the above-mentioned adhesive sheet set, which is the above-mentioned method for manufacturing an article, and is the above-mentioned first adhesive layer and the above-mentioned first. The two adhesive layers contain a fifth component, which is a curable material, and a sixth component, which is a curable material.

FIG. 6 is a process diagram showing an example of a third embodiment of a method for manufacturing an article. As illustrated in FIG. 6, 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 sheet 12 having the second adhesive layer 24 are adhered to each other. A multilayer adhesive sheet 40 formed by bonding one surface of the layer 24 to another is prepared (FIG. 6 (a), preparation step). As shown in FIG. 6A, the first adhesive sheet 11 may have a first separator 21 arranged on at least one surface side of the first adhesive layer 22. In this case, the first adhesive sheet 11 may have a first separator 21. The first separator 21 may be arranged on the other surface of the adhesive layer 22 (the surface opposite to the surface to be bonded to the second adhesive layer 24). Further, 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 in this case, the other surface of the second adhesive layer 24. The second separator 23 may be arranged on (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 multilayer adhesive sheet 40 (FIG. 6 (b), first bonding step). Further, the second member 2 is bonded to the other surface of the second adhesive layer 24 of the multilayer adhesive sheet 40 (FIG. 6 (c) second 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, this step is performed by peeling off the first separator 21. Similarly, when the second separator 23 is arranged on the other surface of the second adhesive layer 24 of the multilayer adhesive sheet 40, this step is performed by peeling off the second separator 23. 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 bonding step and the second bonding step, the components in the first adhesive layer 22 and the second adhesive layer 22 are in contact with each other. The components in the 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. 6 (c)), and firmly secure the first member 1 and the second member 2 via the cured adhesive layer 3. Can be glued 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. 6 (b) and 6 (c) indicates a region (cured region) cured by contact between the first adhesive layer 22 and the second adhesive layer 24.

The preparatory step exemplified in FIG. 6A 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 third embodiment of the method for manufacturing an article, a multilayer adhesive sheet in which a first adhesive layer of the first adhesive sheet and a second adhesive layer of the second adhesive sheet are laminated in advance is used for the multilayer adhesive sheet. On the other hand, by bonding the members together, it is possible to shorten the bonding time between the members, and it is possible to bond the members together with a strong adhesive force developed by curing. Further, since the multilayer adhesive sheet is used, it is not necessary to mix the two liquids as in the case of the two liquid type adhesive, and it is possible to easily bond the members together. 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.

The first adhesive sheet and the second adhesive sheet can be the same as those described in the above "I. Adhesive sheet set". Hereinafter, each step in the method for manufacturing an article of the present embodiment will be described.

1. 1. Preparation Step In the preparation step in the method for manufacturing an article of the present embodiment, one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer and the first of the second adhesive sheet having the second adhesive layer. 2 This is a step of preparing a multi-layer adhesive sheet formed by adhering one surface of an adhesive layer to each other.

The multilayer adhesive sheet may have the first separator on the surface of the first adhesive layer opposite to the second adhesive layer side, and may have the 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. The multilayer body is formed by laminating the second adhesive layer of the second adhesive sheet having the second adhesive layer provided on at least one surface side of the two separators.

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, the second separator and the second separator are used. It may have a multi-layer adhesive sheet forming step of forming a multi-layer adhesive sheet by laminating the second adhesive layer of the second adhesive sheet having the second adhesive layer provided on at least one surface side of the above.

In the multi-layer adhesive sheet forming step, for example, a first adhesive sheet in which the first separator is arranged on both sides of the first adhesive layer and a second adhesive sheet in which the second separator is arranged on both sides of the second adhesive layer are formed. Prepared, 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 attached. Together, a multi-layer adhesive sheet can be prepared.

Further, in the multi-layer adhesive sheet forming step, for example, a first adhesive sheet roll in which a first separator is arranged on one side of the first adhesive layer and is wound in a roll shape with the first adhesive layer as a winding inner surface, and the first adhesive sheet roll. A second adhesive sheet roll, in which a second separator is arranged on one side of the two adhesive layers and is wound in a roll shape with the second adhesive layer as the inner surface of the winding, is prepared and unwound to obtain the first adhesive sheet. The first adhesive layer 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 bonded 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 embodiments described above.

If the bonding 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 means an environment of 5 ° C. or lower, and the multilayer adhesive sheet can be stored in a refrigerator or a freezer of -20 ° C. or higher and 5 ° C. or lower.

2. 2. First bonding step and second bonding step In the first bonding step in the method for manufacturing an article of the present embodiment, the first member is bonded to the other surface of the first bonding layer of the multilayer bonding sheet. It is a process. Further, the second bonding step in the method for manufacturing an article of the present embodiment is a step of bonding the second member to the other surface of the second adhesive layer of the multilayer adhesive sheet. The first bonding step and the second bonding step can be performed in no particular order.

In the multilayer adhesive sheet, when the first separator is arranged on the other surface of the first adhesive layer, the first member is attached to the first adhesive layer exposed by peeling off the first separator. Can be matched. When the second separator is arranged on the other surface of the second adhesive layer in the multilayer adhesive sheet, the second member is placed on the second adhesive layer exposed by peeling off the second separator. Can be pasted together.

The first bonding step and the second bonding step can be performed from the preparation step to the completion of the curing reaction by contact between 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 preparation 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. Further, after the first member and the second member are bonded to the multilayer adhesive sheet, they may be heated to accelerate the curing reaction. The curing time, curing temperature, and heating temperature can be the same as those described in the above-mentioned section "A. First embodiment of the method for producing an article".

3. 3. Other contents not described in the method for manufacturing the article of the present embodiment, such as a bonding method using the physical properties of the adhesive layer and a cured adhesive layer formed by the contact curing reaction of the first adhesive layer and the second adhesive layer. The same can be applied to the contents described in the above-mentioned "A. First embodiment of the method for manufacturing an article" and "B. Second embodiment of a method for manufacturing an article".

D. Fourth Embodiment of the Article Manufacturing Method The fourth embodiment of the article manufacturing method 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. A preparatory step for preparing a member with a first adhesive sheet, wherein one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer is bonded to the first member, and the above. 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 to the other surface of the first adhesive layer of the member with the first adhesive sheet. , Have.

The fourth embodiment of the method for manufacturing an article is roughly classified into two modes according to the configuration of the adhesive layer. The first aspect of the fourth embodiment of the method for manufacturing an article is a method using the first aspect of the above-mentioned adhesive sheet set, which is the method for manufacturing the above-mentioned article, and is the above-mentioned first adhesive layer and the above-mentioned second adhesion. The layer contains the first component, which is a latent curing agent, and the second component, which is a material that activates the latent curing agent, and is the first adhesive layer or the second adhesive layer. One of the above contains a third component which is a curable material. Further, the second aspect of the fourth embodiment of the method for manufacturing an article is a method using the second aspect of the above-mentioned adhesive sheet set, which is the above-mentioned method for manufacturing an article, and is the above-mentioned first adhesive layer and the above-mentioned first. The two adhesive layers contain a fifth component, which is a curable material, and a sixth component, which is a curable material.

FIG. 7 is a process diagram showing an example of a fourth embodiment of a method for manufacturing an article. A fourth embodiment of the method for manufacturing an article includes a preparation step (FIG. 7 (a)) and a second adhesive sheet bonding step (FIG. 7 (b)). 7 (a) and 7 (b) are the same as those of FIGS. 5 (a) and 5 (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. 7 (c)). As shown in FIG. 7C, 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 fourth embodiment of the method for manufacturing an article, 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, a curing reaction is caused by contact. The members and the adhesive layer can be bonded together with the strong adhesive force developed by advancing and curing. Further, since the first adhesive sheet and the second adhesive sheet are bonded and laminated on the first member, it is not necessary to mix the two liquids unlike the two-component adhesive, and the bonding 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 first adhesive sheet and the second adhesive sheet can be the same as those described in the above "I. Adhesive sheet set". The method for manufacturing the article of the present embodiment may be the same as the content described in the above-mentioned "B. Second embodiment of the method for manufacturing the article" except that the second member bonding step is not performed. can.

1. 1. Preparation step In the preparation step in the method for manufacturing an article of the present embodiment, one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer on the first member is bonded to the first adhesive sheet. This is the process of preparing the attached member.

The first member may be fixed.

In the first adhesive sheet, another member may be previously arranged on the surface of the first adhesive layer on the side of the first member or the surface on the opposite side thereof, and the first adhesive layer is impregnated with the other member. May be good. This is because the first adhesive layer and the second adhesive layer of the second adhesive sheet are contact-cured in the second adhesive sheet bonding step, so that other members can be included in the cured adhesive layer. For example, the article 10 shown in FIG. 8 has a first member 1 and a hardened adhesive layer 3, and another member 4 is included in the hardened adhesive layer 3.

2. 2. Second Adhesive Sheet Bonding Step In the second adhesive sheet bonding step in the method for manufacturing an article of the present embodiment, the second adhesive layer is formed 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 to be provided.

In the second adhesive sheet, another member may be arranged on the surface of the second adhesive layer on the side of the first adhesive layer, or the second adhesive layer may be impregnated with the other member. The reason is as described above.

The second adhesive sheet has a second separator arranged on the other surface (the surface opposite to the first adhesive layer side) of the second adhesive layer, and the second adhesive layer of the second separator. The side surface may be a shaped surface. By setting the surface of the second separator on the second adhesive layer side as a shaping surface, after contact curing with the first adhesive layer 22 and the second adhesive layer 24 as illustrated in FIGS. 7 (b) and 7 (c). By peeling off the second separator 23 arranged on the second adhesive layer 24, it is possible to obtain an article 10C in which the shape of the shaped surface of the second separator 23 is shaped on the surface of the cured adhesive layer 3. This is because it is possible to impart designability.

In this step, before the one surface of the second adhesive layer of the second adhesive sheet is bonded, the other member is arranged on the other surface of the first adhesive layer of the member with the first adhesive sheet. It may have a process. The reason is the same as the reason mentioned above.

In the production method of the present embodiment, at least one of the first adhesive sheet and the second adhesive sheet may 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 the pigment, the base to which the adhesive sheet is attached. This is because it can protect.

E. Fifth Embodiment of the Article Manufacturing Method The fifth embodiment of the article manufacturing method 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. Therefore, one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer and one surface of the second adhesive layer of the second adhesive sheet having the second adhesive layer are It has a preparatory step of preparing a multilayer adhesive sheet to be bonded, and a bonding step of bonding the first member to the other surface of the first adhesive layer of the multilayer adhesive sheet.

The fifth embodiment of the method for manufacturing an article is roughly classified into two modes according to the configuration of the adhesive layer. The first aspect of the fifth embodiment of the method for manufacturing an article is a method using the first aspect of the above-mentioned adhesive sheet set, which is the above-mentioned method for manufacturing an article, and is the above-mentioned first adhesive layer and the above-mentioned second adhesion. The layer contains the first component, which is a latent curing agent, and the second component, which is a material that activates the latent curing agent, and is the first adhesive layer or the second adhesive layer. One of the above contains a third component which is a curable material. Further, the second aspect of the fifth embodiment of the method for manufacturing an article is a method using the second aspect of the above-mentioned adhesive sheet set, which is the above-mentioned method for manufacturing an article, and is the above-mentioned first adhesive layer and the above-mentioned first. The two adhesive layers contain a fifth component, which is a curable material, and a sixth component, which is a curable material.

FIG. 9 is a process diagram showing an example of a fifth embodiment of a method for manufacturing an article. A fifth embodiment of the method for manufacturing an article includes a preparation step (FIG. 9 (a)) and a bonding step (FIG. 9 (b)). 9 (a) and 9 (b) are the same as those of FIGS. 6 (a) and 6 (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. 9 (c)). As shown in FIG. 9C, 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 is arranged. 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. Note that P in FIG. 9B indicates a region (cured region) cured by contact between the first adhesive layer 22 and the second adhesive layer 24.

According to the fifth embodiment of the method for manufacturing an article, a multilayer adhesive sheet in which a first adhesive layer of the first adhesive sheet and a second adhesive layer of the second adhesive sheet are laminated in advance is used for the multilayer adhesive sheet. On the other hand, by bonding the members together, the members and the adhesive layer can be bonded 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 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 first adhesive sheet and the second adhesive sheet can be the same as those described in the above "I. Adhesive sheet set". The method for manufacturing the article of the present embodiment can be the same as the content described in the above-mentioned "C. Third embodiment of the method for manufacturing the article" except that the second bonding step is not performed. ..

1. 1. Preparation Step In the preparation step in the method for manufacturing an article of the present embodiment, one surface of the first adhesive layer of the first adhesive sheet having the first adhesive layer and the first of the second adhesive sheet having the second adhesive layer. 2 This is a step of preparing a multi-layer adhesive sheet formed by adhering one surface of an adhesive layer to each other.

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 another member may be arranged in the first adhesive layer. The member may be impregnated. Similarly, 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. It may have been done. This is because it becomes possible to include other members in the cured adhesive layer after the bonding step.

Further, the second adhesive sheet has a second separator arranged on the other surface (the surface opposite to the first adhesive layer side) of the second adhesive layer, and the second adhesive layer of the second separator. The side surface may be a shaped surface. By using the surface of the second separator on the second adhesive layer side as the shaping surface, the shape of the shaping surface of the second separator is shaped on the surface of the cured adhesive layer by peeling off the second separator after the bonding step. This is because the finished article can be obtained and the design can be imparted.

2. 2. Laminating Step The laminating step in the method for manufacturing an article of the present embodiment is a step of laminating the first member to the other surface of the first adhesive layer of the multilayer adhesive sheet.

The first member may be fixed.

In the multilayer adhesive sheet, another member may be arranged in advance on the surface of the first adhesive layer on the side of the first member. The reason is as described above.

Further, this step may include a step of arranging another member on the other surface of the first adhesive layer of the multilayer adhesive sheet before attaching the multilayer adhesive sheet to the first member. The reason is the same as the reason mentioned above.

In the production method of the present embodiment, at least one of the first adhesive sheet and the second adhesive sheet may contain a pigment. For example, when applying the manufacturing method of an article to the manufacturing method of an infrastructure structure, it is possible to easily see where the repaired part is from a distance, and by containing a pigment, an adhesive sheet is attached. This is because the base can be protected.

F. Uses The method for manufacturing an article can be used for a method for producing an article in various fields, and the use thereof is not limited, but above all, it can be used as a method for producing an article that is difficult to heat or irradiate with light. Specifically, the method of manufacturing an article 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 may 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 building material include those known in building construction, specifically, a skeleton such as columns, beams, ceilings, walls, and floors of an existing building structure, and a skeleton when constructing a new building structure. Examples thereof include building members such as floor boards, wall boards, and ceiling boards used for constituting the above, and surface covering materials used by adhering a frame or building member to the surface thereof as a base. Examples of the surface covering material include wall covering materials such as vinyl wallpaper, textile wallpaper, paper wallpaper, inorganic wallpaper, decorative film, tile, panel, and decorative board, tile, linorium, flooring block, flooring, cushion floor, flooring board, and the like. Decorative flooring materials can be mentioned.

As a combination of the first member and the second member, for example, one may be used as a surface covering material and the other may be used as 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 the skeleton of the building structure, and the other can be used as the 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 bolt fixing.

2. 2. Infrastructure structure As the infrastructure structure, any of the above-mentioned methods for manufacturing articles from the first embodiment to the fifth embodiment can be used, and among them, the methods for manufacturing articles of the fourth embodiment and the fifth embodiment. Can be used.

Infrastructure structures include, for example, bridges, pedestals, tunnels, slopes, road pavements, river management facilities, sabo dams, sewage floor fixing works, sewage pipes, sewage treatment plants, port facilities, airports, public housing, and apartment buildings. , General housing, city parks, government facilities, coastal embankments, 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 of the first adhesive sheet or the second adhesive sheet contains a repair or reinforcing member (hereinafter, abbreviated as repair / reinforcing member) without using the second member, or the surface of the adhesive layer. By arranging the repair / reinforcement member in, the first member can be repaired or reinforced by the hardened adhesive layer containing the repair / reinforcement member. Further, for example, a sensor device can be attached as a second member to the first member which is an infrastructure structure. Further, the sensor device is included in the adhesive layer of the first adhesive sheet or the second adhesive sheet without using the second member, or the sensor device is arranged on the surface of the adhesive layer. The contained hardened adhesive layer can be attached to the first member which is an infrastructure structure.

The first member and the second member may be any members for infrastructure, and the form thereof is 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 mounting 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 the reinforcing application include aramid fiber, carbon fiber, vinylon fiber, PET fiber and the like. In addition, 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. It should be noted that the reinforcement includes repairs for hiding cracks and eliminating unevenness, and also includes those for imparting 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 elastic 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 in the state of the surface thereof. For example, those that detect the occurrence and growth of cracks on the concrete surface, changes in the water concentration of the concrete surface, and changes in the ion concentration such as salt content are used. Specifically, a conventionally known sensor device 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 layer and the second 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 means 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 for 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 may be appropriately selected and combined. Examples of the combination of the materials 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 above-mentioned methods for manufacturing articles from the first embodiment to the third embodiment 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.

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

The present disclosure will be described in more detail with reference to Examples and Comparative Examples.

[Material 1]
The details of each component used in the first adhesive composition and the second adhesive composition of Example 1 are shown in the table below.

[Example 1]
1. 1. First Preparation Step A polyester film whose one side is peeled off with a silicone-based release agent (film thickness: 38 μm, manufactured by Tosero Co., Ltd., 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 above was applied onto the peeling-treated surface using an applicator so that the thickness after coating was 50 μm, respectively, and in a drying oven. It was dried at 80 ° C. for 2 minutes to form a first adhesive layer. Next, a polyester film (thickness: 38 μm, manufactured by Tosero Co., Ltd., trade name: SP-PET-01, hereinafter referred to as the first separator B), which has been peeled off with a silicone-based release agent on one side, is used. The peeled surface and the first adhesive layer were bonded together with a rubber 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. 2. Second preparation step As the second separator A, the same one as the first separator A is used, and the thickness of the second adhesive composition having the composition composition shown in Table 2 above is applied on the peeling surface thereof after coating. 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 B, the same one as the first separator B 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, and one of the first separators is peeled off to expose the first adhesive layer, and the first member (molten zinc plated steel plate, JIS G3302 /). A member with a first adhesive sheet was prepared by attaching to the tip portion of an SGCC 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, one of the second separators 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). Then, a member with a second 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 about 0.05 MPa was applied to the temporarily fixed portion and cured at 23 ° C. in a 50% atmosphere for 7 days to obtain an article.

[Comparative Example 1]
(Preparation of the first adhesive sheet)
A first adhesive composition having the following composition was prepared. Using this first adhesive composition, a first adhesive sheet was prepared in the same manner as in Example 1.
-Liquid bisphenol A type epoxy compound (Epoxy equivalent: 190 g / eq., Molecular weight: 380, manufactured by Mitsubishi Chemical Corporation, trade name: jER828, classification: curable material) 85 parts by mass-Solid bisphenol A type epoxy compound (molecular weight:: 5000, manufactured by Mitsubishi Chemical Corporation, trade name: jER1009, classification: curable material) 15 parts by mass, acrylic polymer (polar group-imparted methyl methacrylate-butyl acrylate-methyl methacrylate triblock copolymer, manufactured by Alchema, trade name) : M22N, Category: Polymer) 10 parts by mass, ethyl acetate (manufactured by DIC Graphics, Category: Solvent) 43 parts by mass

(Preparation of the second adhesive sheet)
A second adhesive composition having the following composition was prepared. Using this second adhesive composition, a second adhesive sheet was produced in the same manner as in Example 1.
-2-Ethyl-4-methylimidazole (manufactured by Shikoku Kasei Co., Ltd., trade name: 2E4MZ, classification: catalyst) 100 parts by mass-Acrylic polymer (polar group-imparted methyl methacrylate-butyl acrylate-methyl methacrylate triblock copolymer, Alchema) Manufacturer, trade name: M22N, classification: polymer) 80 parts by mass, ethyl acetate (manufactured by DIC Graphics, classification: solvent) 187 parts by mass

[Evaluation 1]
The curing times of the first adhesive sheet and the second adhesive sheet of Example 1 and Comparative Example 1 were evaluated. First, the first adhesive sheet and the second adhesive sheet were cut into a length of 25 mm and a width of 12.5 mm. One of the second separators of the second adhesive sheet was peeled off to expose the second adhesive layer, and the second adhesive layer was attached to the tip portion of a SUS plate (size: length 100 mm × width 25 mm × thickness 2 mm). Next, the other second separator of the second adhesive sheet on the SUS plate is peeled off, and one first separator of the first adhesive sheet is peeled off to expose the second adhesive layer and the first adhesive layer, respectively. The adhesive layers were bonded to each other so as to have an adhesive area of 25 mm in length and 12.5 mm in width. Next, the other first separator of the first adhesive sheet on the SUS plate was peeled off to expose the first adhesive layer, and the first adhesive layer was attached to the tip of another SUS plate (size: length 100 mm × width 25 mm). Then, it was allowed to stand for 12 hours, 24 hours, 48 hours, 72 hours or 6 days under a 50% RH environment at 23 ° C. for curing. For the sample after each curing time, both ends of the above sample were fixed to a Tensilon universal material tester (RTF-1350, manufactured by A & D Co., Ltd.) in an environment of 23 ° C. and 50% RH, and at 10 mm / min. Tension and tensile shear strength were measured (JIS K6850: 1999 (adhesive-tensile shear adhesive strength test method for rigid adherend) compliant method). When the tensile shear strength was 2 MPa or more, it was determined that the first adhesive layer and the second adhesive layer were cured.

Example 1 was cured after 24 hours, but Comparative Example 1 was not cured after 24 hours and was cured after 72 hours. From this, it was found that Example 1 had a shorter curing time than Comparative Example 1.

[Material 2]
Details of each component used in the adhesive compositions of Examples 2 to 7 are shown in the table below.

[Examples 2 to 7]
(Preparation of the first adhesive sheet)
A polyester film (thickness: 38 μm, manufactured by Tosero Co., Ltd., trade name: SP-PET-03, hereinafter referred to as the first separator A), which has been peeled off with a silicone-based release agent on one side, is used. The adhesive composition shown in the above table is applied to the peeled surface using an applicator so that the thickness after coating becomes a predetermined thickness, and dried in a drying oven at 80 ° C. for 2 minutes. 1 An adhesive layer was formed. Next, a polyester film (thickness: 38 μm, manufactured by Tosero Co., Ltd., trade name: SP-PET-01, hereinafter referred to as the first separator B), which has been peeled off with a silicone-based release agent on one side, is used. The peeled surface and the first adhesive layer were bonded together with a rubber 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.

(Preparation of the second adhesive sheet)
As the second separator A, the same one as the first separator A is used, and the adhesive composition shown in the above table is applied to the peeled surface using an applicator so that the thickness after coating becomes a predetermined thickness. Then, it was dried at 80 ° C. for 2 minutes in a drying oven to form a second adhesive layer. Next, as the second separator B, the same one as the first separator B 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.

[Comparative Example 2]
The first adhesive sheet and the second adhesive sheet were produced in the same manner as in Example 2 except that the adhesive composition shown in the above table was used.

[Evaluation 2]
The curing times of the first adhesive sheet and the second adhesive sheet of Examples 1 to 6 and Comparative Example 1 were evaluated. First, the first adhesive sheet is cut into a length of 25 mm and a width of 12.5 mm, and one of the first separators is peeled off to expose the first adhesive layer to expose a SUS plate (size: length 100 mm × width 25 mm). I pasted it on the tip. Further, the second adhesive sheet is cut to the same size as the first adhesive sheet, one of the second separators is peeled off to expose the second adhesive layer, and another SUS plate (size: length 100 mm × width 25 mm). I pasted it on the tip of. 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), fixed with a clip, and the sample laminated in the order of SUS plate / first adhesive layer / second adhesive layer / SUS plate is obtained. Made. The above sample was allowed to stand for 24 hours or 48 hours in a 50% RH environment at 23 ° C. for curing. For the sample after each curing time, both ends of the above sample were fixed to a Tensilon universal material tester (RTF-1350, manufactured by A & D Co., Ltd.) in an environment of 23 ° C. and 50% RH, and at 10 mm / min. Tension and tensile shear strength were measured (JIS K6850: 1999 (adhesive-tensile shear adhesive strength test method for rigid adherend) compliant method). When the tensile shear strength was 2 MPa or more, it was determined that the first adhesive layer and the second adhesive layer were cured.

All of Examples 2 to 7 were cured after 24 hours, and the thinner the thickness of the second adhesive layer, the shorter the curing time. On the other hand, Comparative Example 2 did not cure after 24 hours and cured after 48 hours. From this, it was found that Examples 2 to 7 had a shorter curing time than Comparative Example 2.

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 (20)

An adhesive sheet set having 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 contain a first component, one of which is a latent curing agent, and the other contains a second component, which is a material for activating the latent curing agent.
Either the first adhesive layer or the second adhesive layer contains a third component which is a curable material.
The first adhesive sheet and the second adhesive sheet are configured to be cured and adhered by contacting the first adhesive layer and the second adhesive layer with each other.
The first component is a catalytic curing agent.
The first component is microencapsulated, and the second component is a catalyst, a material capable of dissolving the shell of the microcapsules, or a material capable of promoting the destruction of the microcapsules .
The first adhesive layer further contains a seventh component, which is a polymer compatible with the components contained in the first adhesive layer.
The second adhesive layer further contains an eighth component, which is a polymer compatible with the component contained in the second adhesive layer.
The seventh component is further compatible with the component contained in the second adhesive layer.
An adhesive sheet set in which the eighth component is further compatible with the component contained in the first adhesive layer . An adhesive sheet set having 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 contain a first component, one of which is a latent curing agent, and the other contains a second component, which is a material for activating the latent curing agent.
Either the first adhesive layer or the second adhesive layer contains a third component which is a curable material.
The first adhesive sheet and the second adhesive sheet are configured to be cured and adhered by contacting the first adhesive layer and the second adhesive layer with each other.
The first component is an addition type curing agent.
The first component is microencapsulated, and the second component is a catalyst, a material capable of dissolving the shell of the microcapsules, or a material capable of promoting the destruction of the microcapsules .
The first adhesive layer further contains a seventh component, which is a polymer compatible with the components contained in the first adhesive layer.
The second adhesive layer further contains an eighth component, which is a polymer compatible with the component contained in the second adhesive layer.
The seventh component is further compatible with the component contained in the second adhesive layer.
An adhesive sheet set in which the eighth component is further compatible with the component contained in the first adhesive layer . The adhesive sheet set according to claim 1 or 2, wherein the first adhesive layer and the second adhesive layer contain the third component and the fourth component, which is a curable material. .. The adhesive sheet set according to any one of claims 1 to 3, wherein the thickness of the adhesive layer containing the first component is larger than the thickness of the adhesive layer containing the second component. The adhesive sheet set according to claim 1, wherein the molecular weight of the first component is in the range of 80 or more and 500 or less, and the molecular weight of the second component is in the range of 80 or more and 1000 or less. The adhesive sheet set according to claim 1 or 5, wherein the first component generates an active species and the second component is a catalyst. The adhesive sheet set according to claim 6, wherein the first component is a radical generator, a base generator, an acid generator or an electrophile generator. The adhesive sheet set according to claim 2, wherein the molecular weight of the first component is in the range of 50 or more and 1000 or less, and the molecular weight of the second component is in the range of 30 or more and 600 or less. The adhesive sheet set according to any one of claims 1 to 5, or claim 8, wherein the second component is a pH adjuster, a solvent, water, or a compatibilizer. The adhesive sheet set according to claim 1, wherein the third component contains an acrylic compound and the first component is a radical generator. The adhesive sheet set according to claim 10, wherein the first component is a peroxide and the second component is a metal catalyst, amines, dimethylaniline or a quaternary ammonium salt. The adhesive sheet set according to claim 10, wherein the first component and the second component are an oxidizing agent and a reducing agent for a redox-based catalyst. The adhesive sheet set according to claim 10, wherein the first component is a borane or an organometallic compound, and the second component is a tertiary amine. The third component is a microcapsule containing an epoxy compound, the first component is a microcapsule containing an imidazole compound or an amine compound, and the second component is a pH adjuster, a shell-soluble monomer, or a compatibilizer. The adhesive sheet set according to claim 1. The third component contains an epoxy compound, the first component is a thiol compound, and the second component is a tertiary amine compound, an aliphatic dimethylurea, an aromatic dimethylurea, a phosphorus-based catalyst, or polyamines. , The adhesive sheet set according to claim 2. The second aspect of claim 2, wherein the third component contains an epoxy compound, the first component is a phenol compound, and the second component is an imidazole compound, polyamines, an aliphatic dimethylurea, or an aromatic dimethylurea. Adhesive sheet set. The adhesive sheet set according to claim 2, wherein the third component contains an epoxy compound, the first component is an amine compound, and the second component is an imidazole compound or a phosphorus-based catalyst. The third component contains an epoxy compound, the first component is dicyandiamide or hydrazides, and the second component is an aliphatic dimethylurea, an aromatic dimethylurea, an imidazole compound, a polyamine, a tertiary amine compound, or. The adhesive sheet set according to claim 2, which is a metal chelate compound. The mass average molecular weight of the seventh component is larger than the mass average molecular weight of the other components contained in the first adhesive layer.
The adhesive sheet set according to claim 1 , wherein the mass average molecular weight of the eighth component is larger than the mass average molecular weight of the other components contained in the second adhesive layer. .. The adhesive sheet set according to any one of claims 1 to 19 , which is used for a building article or an infrastructure structure.

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