TWI666292B - Pressure-sensitive adhesive sheet and method of manufacturing pressure-sensitive adhesive sheet - Google Patents

Abstract

The invention provides a pressure-sensitive adhesive sheet and a method for manufacturing the pressure-sensitive adhesive sheet. The pressure-sensitive adhesive sheet is formed by laminating at least a base material, an adhesive layer, and a release sheet, regardless of the form of the adhesive laminate including the base material and the adhesive layer. The physical properties of the adhesive laminate can be easily and accurately measured.

The solution is to laminate at least a base material, an adhesive layer, and an adhesive sheet made of a release sheet, etc., and an adhesive laminate composed of the base material and the adhesive layer is formed on the release sheet and processed to be adhered to the adherend. The adhesive body attachment portion and the physical property measurement portion for measuring the physical properties of the adhesive laminate are arranged on the same release sheet in a planar manner.

Description

Adhesive sheet and manufacturing method of adhesive sheet

The present invention relates to an adhesive sheet and a method for manufacturing the adhesive sheet.

In particular, an adhesive sheet (adhesive sheet with a release sheet) formed by laminating at least a substrate, an adhesive layer, and a release sheet may be used regardless of the form of the adhesive laminate including the substrate and the adhesive layer. Adhesive sheet for easily and accurately measuring physical properties of an adhesive laminate and a method for producing the adhesive sheet.

Conventionally, a display label for displaying a predetermined content, a fixing tape for fixing components in an electronic product, or the like, or a protective film for protecting components from dust or damage during the assembly process of the electronic product. An adhesive laminate formed by laminating a substrate and an adhesive layer suitable for each application is used.

The above-mentioned adhesive laminated body has various forms according to its use, for example, there are various extremely small objects or objects having cutouts (for example, Patent Documents 1 and 2).

That is, Patent Document 1 discloses a printing method for an extremely small label continuum, which has a printer casing, and a printing portion of the label continuum that is printed on a conveying path formed in the printer casing has a platen roller and has a platen roller. The detection unit that detects the position of the label continuum and the control unit that controls the detection unit and the printing unit set the distance between the label discharge port of the printer casing and the platen roller so that the size of the printable label becomes the minimum size limit. The minimum label printing area, the label continuum is a minimum label continuum of extremely small labels with a strip of backing paper and a plurality of extremely small labels temporarily adhered to the backing paper and having the smallest label printing area spacing, which can be used for printing of small labels . More specifically, a method for printing a continuum of extremely small labels is disclosed, which is characterized in that: for a minimum label in which a predetermined number of sheets can be arranged in a unit of a minimum label printing area, the minimum label area in this unit cooperates extremely little A slit is cut in a wide direction for each size of the label, thereby demarcating a label configuration area forming each of the minimum labels, and supplying the printed content of the predetermined minimum number of labels to the label configuration area of each minimum label. Printing on the smallest labels, and for the smallest labels with a smaller number of pieces in a unit of label arrangement in a unit of the smallest label printing area, sequentially printing from the smallest label located at the head in the smallest label printing area.

In addition, Patent Document 2 discloses an IC tag for preventing replacement, which is characterized in that a label sheet provided with an adhesive layer on an inner surface of a label base material layer, and an antenna support base material having a smaller size than the label sheet. The layer is laminated on the surface to form a linear or spiral antenna and a tag identification information communication sheet of the IC chip. The IC chip is pasted on the side of the adhesive layer, and the label base is provided at several places on the edge of the label sheet. Layer to antenna support A cutout line is provided up to the base material layer in a direction crossing the antenna of the tag identification information communication sheet, and the inner end portion of the cutout line is hung in the area where the antenna supports the base material layer and / or the antenna can be energized and / or Antenna area.

[Prior technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 4769109 (Scope of Patent Application)

[Patent Document 2] Japanese Patent Laid-Open No. 2005-216054 (Scope of patent application)

However, the extremely small label obtained by the printing method of the extremely small label continuum described in Patent Document 1 is caused by the extremely small, even when physical properties such as measurement of adhesion are required from the quality control requirements, and it appears that A problem that it is difficult to accurately measure physical properties.

Therefore, for example, before the die-cutting process, even if it can be confirmed that the physical properties of the product samples stored in the manufacturing plant are normal, the process of the conveying step or the die-cutting process step determines whether the physical properties of the extremely small label finally obtained are normal. It becomes difficult to do so. Even if the change in physical properties is clear, the so-called quality management problems that make it difficult to investigate the degree or cause of the problem appear.

In addition, the IC tag for preventing the exchange of IC tags described in Patent Document 2 In this case, it is also because the incision line is provided, and it is difficult to measure the physical properties easily and accurately. As in the case of Patent Document 1, there is a problem in quality control.

Therefore, the quality control of an adhesive laminate having extremely small or difficult-to-measure physical properties such as adhesive force after forming, such as a label having a very small or cutout portion, is required to be improved.

Therefore, the present inventors have made intensive efforts in view of the foregoing circumstances, and have found that an adhesive laminate including a substrate and an adhesive layer is formed on a release sheet to be processed into an adherend for attachment to an adherend. The part and the physical property measurement part for measuring the physical properties of the adhesive laminate are arranged, and the adhesive body attachment part and the physical property measurement part are arranged on the same release sheet in a plane. This problem can be solved to complete the present problem. invention.

That is, the object of the present invention is to provide an adhesive sheet and a method for manufacturing the same, which can be performed easily and correctly regardless of the form of the adhesive laminate (adhesive body attaching part) composed of a substrate and an adhesive layer. Measurement of the physical properties of the adhesive laminate.

According to the present invention, there is provided an adhesive sheet, characterized in that: an adhesive sheet formed by laminating at least a base material, an adhesive layer and a release sheet, and forming an adhesive laminate including the base material and the adhesive layer on the release sheet; It is processed into an adhesive body attachment part for attaching to an adherend and a physical property measurement part for physical property measurement of an adhesive laminate, and the adhesive body attachment part and the physical property measurement part are arranged on the same plane. On the release sheet.

That is, as long as it is the adhesive sheet of the present invention, the adhesive laminate is separately formed and processed into an adhesive body attachment portion and a physical property measurement portion, even if only the adhesive body attachment portion is difficult to measure the physical properties after the forming process. The physical properties of the adhesive laminate can be easily and accurately measured using the physical property measurement portion of the adhesive sheet in this state.

In addition, in the adhesive sheet of the present invention, since the adhesive body attachment portion and the physical property measurement portion are arranged on the same release sheet, the physical property measurement portion and the physical property measurement portion have approximately the same engineering history.

Therefore, by measuring the physical properties using the physical property measurement portion, the physical properties of the adherent body application portion at the time point can be easily and accurately measured.

In forming the adhesive sheet of the present invention, it is preferable to select at least one planar shape of the physical property measurement portion from a group consisting of a rectangle, a substantially rectangle, an oval, a substantially oval, a circle, and a circle.

With the configuration as described above, the physical property measurement portion can be used to more easily and accurately measure the physical property.

In addition, when constituting the adhesive sheet of the present invention, it is preferable that the area of the planar shape of the portion for attaching the adherend is 400 mm ² or less.

With the configuration described above, it is difficult to measure the physical properties of the adhesive body attachment portion due to insufficient area. However, according to the present invention, physical property measurement can be easily and accurately performed using the physical property measurement portion.

Moreover, when constituting the adhesive sheet of the present invention, it is preferable that the portion for attaching the adherend has a cutout portion.

With the above-mentioned configuration, the physical properties are broken at the cutout portion. It is difficult to measure the physical properties of the part using the adherend for attachment, but as long as it is the present invention, the physical property measurement can be easily and accurately performed using the part for measuring the physical properties.

Moreover, when constituting the adhesive sheet of the present invention, it is preferable that the adhesive layer of the adherent part of the adherend has a non-adhesive portion formed by applying a part of non-adhesive treatment.

With the above-mentioned configuration, since the physical properties of the non-adhesive portion affect the measurement result, it is difficult to measure the physical properties of the adherent part. However, as long as it is the present invention, it is easy and accurate to use the physical property measurement part. Measure physical properties.

In addition, when constituting the adhesive sheet of the present invention, it is preferable that the adhesive layer of the adherent part is a non-contact part that does not contact the adherend.

With the configuration described above, since the physical properties of the non-contact portion affect the measurement result, it is difficult to measure the physical properties using the adherent part. However, as long as it is the present invention, it is easy and accurate to use the physical property measuring part. Measure physical properties.

Moreover, another aspect of this invention is the manufacturing method of the said adhesive sheet, It is characterized by the manufacturing method of the adhesive sheet containing the following steps (I)-(II).

(I) a step of preparing an adhesive sheet before forming at least a substrate, an adhesive layer, and a release sheet, and (II) an adhesive laminate including the substrate and the adhesive layer on the release sheet Molded to form an adherence part for adherence to an adherend A step of obtaining a pressure-sensitive adhesive sheet by arranging a portion for measuring the physical properties of the adhesive laminate with a portion for measuring the physical properties of the adhesive layer, and arranging the portion for attaching the adhesive body and the portion for measuring the physical properties on the same release sheet.

That is, as long as it is the method for producing an adhesive sheet of the present invention, an adhesive laminate composed of a base material and an adhesive layer is formed on a release sheet to be processed into an adhesive-adhesive-adhesive part for attaching to an adherend and The physical property measurement part for measuring the physical properties of the adhesive laminate, and the adhesive body attachment part and the physical property measurement part are arranged on the same release sheet in a plane, that is, regardless of the shape of the adhesive body attachment part, Both can obtain an adhesive sheet which can easily and accurately measure the physical properties of the adhesive laminate.

In addition, when the method for manufacturing an adhesive sheet of the present invention is implemented, in step (II), a forming process is performed to use a first processing means having a planar shape corresponding to the portion for attaching the adherend and a portion corresponding to the portion for measuring physical properties. It is preferable that the die-cutting machine of the second processing means of the planar shape performs the die-cutting process.

As described above, with this implementation, the engineering history of the physical property measurement part can be infinitely approached to the engineering history of the adhesive body attachment part.

2‧‧‧ peeling sheet

4‧‧‧ Adhesive layer

6‧‧‧ substrate

10‧‧‧ Adhesive laminate

12‧‧‧ Adhesive body attachment part

14‧‧‧ part for measuring physical properties

20‧‧‧ Adhesive sheet

20’‧‧‧ Adhesive sheet before forming

30‧‧‧ incision

40‧‧‧Non-adhesive

50‧‧‧ non-contact

100‧‧‧ Adhesive

200‧‧‧Die cutting machine

210‧‧‧ Upper Side Frame

212‧‧‧concave

214‧‧‧The first processing means

220‧‧‧ lower side frame

222‧‧‧ convex

Figures 1 (a) to (b) are diagrams for explaining the adhesive sheet of the present invention.

Figures 2 (a) to (b) are other views for explaining the adhesive sheet of the present invention.

Figs. 3 (a) to (b) are diagrams for explaining another of the adhesive sheet of the present invention. Illustration.

Figures 4 (a) to (c) are other figures for explaining the adhesive sheet of the present invention.

Fig. 5 is another view for explaining the adhesive sheet of the present invention.

Figures 6 (a) to (e) are views for explaining a method for manufacturing the adhesive sheet of the present invention.

[First Embodiment]

The first embodiment of the present invention is an adhesive sheet 20. As shown in Figs. 1 (a) to (b), at least the adhesive sheet 20 formed by laminating the base material 6, the adhesive layer 4 and the release sheet 2 is characterized in that: The adhesive laminate 10 including the base material 6 and the adhesive layer 4 is formed on the release sheet 2 to form an adhesive attachment portion 12 for attaching to the adherend and an adhesive laminate 10 for the adhesive laminate 10. The physical property measurement part 14 for physical property measurement, and the adhesive body attachment part 12 and the physical property measurement part 14 are arranged on the same release sheet 2 in a plane.

Fig. 1 (a) is a top view of the adhesive sheet of the present invention, and Fig. 1 (b) is a cross-sectional view when the adhesive sheet is cut on a plane passing through line A-A of Fig. 1 (a).

In addition, in FIG. 1 (b), the portions other than the adhesive body attachment portion 12 and the physical property measurement portion 14 of the adhesive laminate 10 are shown as being removed by peeling. The latter state (the same applies to Figs. 2 (b), 3 (b), and 4 (b) described later).

Hereinafter, the first embodiment of the present invention will be specifically described with reference to the drawings as appropriate.

Release sheet

The release sheet of the present invention is not particularly limited, and examples thereof include polyester films such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, and the like. An olefin film such as polypropylene or polyethylene or a paper-based release material, for example, a silicon-based or rubber-based release agent is applied to provide a release layer.

In addition, the film thickness of the relevant release sheet is generally preferably a value in a range of 20 to 150 μm, and more preferably a value in a range of 25 to 75 μm.

2. Adhesive laminate

In the present invention, the adhesive laminate is a laminate including a substrate and an adhesive layer, and means a part other than the release sheet of the adhesive sheet.

Hereinafter, the base material and the adhesive layer of the constituent elements of the adhesive laminate will be described.

(1) Substrate

The substrate of the present invention is not particularly limited, and conventionally, it can be appropriately selected and used from a plastic film, a paper substrate, a nonwoven fabric, or the like used as a substrate of an adhesive sheet.

For example, as long as it is a plastic film, polyester films such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyethylene films, and poly Acrylic film, polyvinyl chloride film, polyvinylidene chloride film, polyvinyl alcohol film, ethylene-vinyl acetate copolymer film, polystyrene film, polycarbonate film, polymethylpentene film, polyfluorene film, polymer film Ether ether ketone film, polyether fluorene film, polyphenylene sulfide film, polyetherimine film, polyfluorine film, fluororesin film, polyfluorene film, acrylic resin film, norbornene resin film, ring Enol resin film and the like.

In addition, the film thickness of the substrate is usually preferably a value in a range of 10 to 300 μm, and more preferably a value in a range of 20 to 150 μm.

(2) Adhesive layer

The adhesive layer of the present invention is not particularly limited, and conventional acrylic, silicon, urethane, and rubber-based adhesives can be used.

In addition, as the type of the adhesive, an active energy ray-curable or hot-melt adhesive can also be used.

The film thickness of the relevant adhesive layer is generally preferably a value in a range of 1 to 200 μm, and more preferably a value in a range of 5 to 50 μm.

(3) Other layers

Moreover, you may add a base material and an adhesive layer to an adhesive laminated body, and may laminate | stack other layers, such as an intermediate | middle layer and an easy-adhesion layer.

(4) Adhesive body attachment part

The adhesive laminate of the present invention is characterized in that it has an adhesive body attachment portion for attaching to an adherend.

The state of the above-mentioned adhesive body attachment portion is not particularly limited, but the following is an example that illustrates that it is particularly difficult to measure the physical properties of the adhesive body attachment portion, that is, when measuring the physical properties, the physical property measurement described later is used Part of it became particularly desirable.

(4) -1 area

First, it is particularly difficult to measure the physical properties of the adhesive body attachment part. The first aspect is as shown in Fig. 1 (a). For example, the area of the shape of the adhesive body attachment part 12 is 400 mm ² or less. Appearance.

This reason is that when the area of the planar shape of the adherent body attachment portion becomes a value of 400 mm ² or less, the area becomes insufficient, even when the adherent body attachment portion is used as a direct sample, or the sample is processed into a sample. In some cases, it is difficult to measure the physical properties of the adhesive part.

In addition, the planar shape of the adhesive body attachment portion is circular in FIG. 1 (a), but it is not particularly limited, and it can also be used for any purpose, such as an oval or rectangular arbitrary shape.

The "planar shape" in the present invention is a shape when viewed from the upper side of the substrate side as shown in Fig. 1 (a).

(4) -2 incision

In addition, the physical property measurement using the adherent part becomes particularly sleepy. The second difficult aspect is shown in Figs. 2 (a) to 2 (b), for example, an aspect in which the adhesive body attachment portion 12 has a notch portion 30.

This reason is that when the adhesive body attachment portion has a cutout portion, it is difficult to measure the physical properties of the adhesive body attachment portion because the fracture occurs at the incision portion during physical property measurement.

In addition, the adhesive body attachment portion having the cutout portion as described above is attached to the unsealed portion to ensure that the product or outer package is unopened.

Therefore, the arrangement, the number, the length, and the depth of the incisions are not limited as long as they can sufficiently break the adhesive application part when the product or the outer package is unsealed. However, for example, it can be roughly exemplified. The patterns shown in Figures 2 (a) ~ (b).

In addition, as a method for forming the incision portion, for example, in addition to a processing method for forming an adhesive body attachment portion, and a processing method corresponding to the incision portion is set in advance, the incision portion can be punched out while forming an incision portion. .

Alternatively, a base material that has been cut in advance may be used, or another processing method different from the formation of the part for attaching the adherend may be formed by cutting only the base material to form a cutout portion.

Fig. 2 (a) is a top view of the adhesive sheet of the present invention, and Fig. 2 (b) is a cross-sectional view when the adhesive sheet is cut on a plane passing through line B-B of Fig. 2 (a).

(4) -3 non-adhesive part

In addition, the physical property measurement using the adherent part becomes particularly sleepy. The third difficult aspect is as shown in Figs. 3 (a) to (b). The adhesive layer 4 of the adhesive body attachment portion 12 can be exemplified as a portion of the non-adhesive portion 40 subjected to non-adhesive treatment. state.

The reason is that when the adherent part has a non-adhesive part, the measurement result is affected by the physical properties of the non-adhesive part, so the physical property measurement using the adherent part becomes difficult.

In addition, the adhesive body attaching portion having the non-adhesive portion as described above is used for, for example, a POP label for a product requiring high peelability, or a protective label for a small device where the attachment of an adhesive such as a precision portion becomes a problem.

Therefore, although the planar shape, arrangement, and number of non-adhesive portions are not limited, a rough example is a state shown in, for example, FIGS. 3 (a) to (b).

In addition, as a method of being subjected to an adhesive treatment for forming a non-adhesive portion, for example, when the adhesive is an active energy ray-curable adhesive, the adhesive can be irradiated with radiation across a predetermined photomask to activate the activation energy. A method in which a portion irradiated with radiation is hardened to form a non-adhesive portion having a predetermined shape.

Fig. 3 (a) is a top view of the adhesive sheet of the present invention, and Fig. 3 (b) is a cross-sectional view when the adhesive sheet is cut on a plane passing through line C-C of Fig. 3 (a).

(4) -4 non-contact part

In addition, as a fourth aspect, which is particularly difficult to measure the physical properties of the part using the adherend, as shown in Figures 4 (a) to (c), the part for attaching the adherent The adhesive layer 4 of the part 12 can be exemplified as a part of the non-contact portion 50 that is not in contact with the adherend 100.

The reason is that when the non-contact portion of the adherent body has a non-contact portion, the measurement result is affected by the physical properties of the non-contact portion, which makes it difficult to measure the physical properties of the adherent body.

In addition, the adhesive body attaching portion having the non-contact portion as described above is a case where a protective film is attached when a precision component for assembling a lens unit such as a digital camera is attached so that the adhesive layer does not directly contact the lens portion. Wait.

Therefore, there are no particular restrictions on the planar shape, three-dimensional shape, arrangement, and number of the non-contact portions. However, the approximate examples include the forms shown in FIGS. 4 (a) to (c).

In addition, the non-contact portion may be formed by, for example, press-cutting the concave portion of the upper mold frame and the convex portion of the lower mold frame while performing die-cutting processing for the part for adhering the body.

Fig. 4 (a) is a top view of the adhesive sheet of the present invention, and Fig. 4 (b) is a cross-sectional view when the adhesive sheet is cut on a plane passing through line DD of Fig. 4 (a). (c) is a figure which shows the state which attached the adhesive body attachment part of the adhesive sheet shown in FIG. 4 (b) to the adhesive body.

(4) -5 plane shape

In addition, as a fifth aspect, which is particularly difficult to measure the physical properties of the portion using the adherend, as shown in FIG. 5, for example, the planar shape of the portion 12 for adherence does not have a linear portion at all, or less. Linear Appearance.

The reason is that when the adherent part is in the above-mentioned planar shape, for example, when the measurement of the adhesive force requires physical measurement of a predetermined linear distance, it is difficult to measure the physical properties of the adherent part.

Therefore, it means that there is a further need for a portion for measuring physical properties, and it is preferable that the length of the linear portion of the planar shape of the adhesive body application portion is 30 mm or less, and more preferably 20 mm or less.

FIG. 5 is a top view of the adhesive sheet of the present invention.

In addition, although the planar shape of the adhesive body attachment portion is formed in a C shape in FIG. 5, this is not particularly limited.

In FIG. 5, although the planar shape of the physical property measurement portion 14 is circular, it has a sufficient area so that a shape having a linear distance can be cut out as a sample for physical property measurement.

(5) Physical property measurement part

The adhesive laminate of the present invention is characterized by having a physical property measurement portion for measuring the physical properties of the adhesive laminate.

The reason is that even when only the adhesive body attachment portion is used to measure an adhesive sheet in which physical properties are difficult after molding, the physical property measurement portion can be used to easily and accurately measure the physical properties of the adhesive laminate.

Hereinafter, the part for physical property measurement will be specifically described.

(5) -1 Object physical properties

It is especially not suitable for the physical properties of the object measured by the physical property measurement part. It is limited, but for example, there may be adhesive force or holding force.

The adhesive force can be measured based on JIS Z 0237: 2009, and the holding force can be measured based on JIS Z 0237: 2009, for example.

(5) -2 shape

Rectangle shown in Figure 3 (a), Figure 1 (a), Figure 2 (a), and Figure 4 (a) are roughly rectangular, oval, and roughly oval, as shown in Figure 5 It is preferable to select at least one of the circular and substantially circular groups as the planar shape of the physical property measurement portion.

The reason is that when the planar shape of the part for measuring physical properties is such a shape, using the part for measuring physical properties makes it easier and more accurate to measure the physical properties.

That is, by setting the planar shape of the physical property measurement portion to such a shape, the measurement sample required for the physical property measurement described above becomes easy to make, and therefore, using the physical property measurement portion makes it easier and more accurate to perform physical properties. Measurement.

(5) -3 size

In addition, it is preferable that the maximum diameter of the planar shape of the part for measuring the physical properties be within a range of 20 to 300 mm.

The reason is that when the maximum diameter is less than 20 mm, it may be difficult to prepare a measurement sample required for physical property measurement. On the other hand, when the maximum diameter is larger than 300 mm, the area of the adhesive body attachment portion that can be planarly disposed on the same release sheet may be excessively restricted.

When the plane shape of the part for measuring physical properties is rectangular, approximately rectangular, elliptical, or approximately elliptical, the length in the long axis direction is preferably in the range of 20 to 300 mm, and preferably 30 to The value in the range of 250 mm is more preferable, and the value in the range of 45 to 200 mm is the best.

In addition, the value of the length (width) in the short-axis direction is preferably in the range of 1 to 30 mm, more preferably in the range of 1.5 to 28 mm, and most preferably in the range of 2 to 25 mm. .

The maximum diameter in the present invention means the diameter of the circumscribed circle when a circle circumscribed on the plane shape of the part for measuring physical properties is drawn.

(5) -4 configuration

In addition, the present invention is shown in Fig. 1 (a), Fig. 2 (a), Fig. 3 (a), Fig. 4 (a), and Fig. 5, and is characterized in that the adhesive body attachment portion 12 The part 14 for physical property measurement is planarly disposed on the same release sheet 2.

The reason is that with the above configuration, the physical property measurement part has approximately the same engineering history as that of the adherent body attachment part. As a result, the physical property measurement part can be used to measure physical properties easily and accurately at the time point. Physical properties of the adherent part.

In addition, the planar arrangement of the adherent part is basically the same as that of the conventional adhesive sheet without the physical property measurement part, as shown in Fig. 1 (a), Fig. 2 (a), Figures 3 (a), 4 (a), and 5 show that the surface It is better to maximize the forming area.

On the other hand, the planar layout of the physical property measurement part is shown in Figs. 1 (a), 2 (a), 4 (a), and 5, for example. On one side, the plane is preferably arranged on the outside of the part where the adherent part for the adherence is arranged in the plane.

The reason is that, as described above, the planar arrangement can prevent the planar arrangement of the adhesive body attachment portion from being hindered, and can also suppress the decrease in operability when the adhesive body attachment portion is used.

However, as long as it does not impede the planar arrangement of the adherent part and does not impair its operability, as shown in FIG. 3 (a), the planar arrangement is such that the adherent part is arranged on the plane. Part of it.

[Second Embodiment]

A second embodiment of the present invention is a method for producing an adhesive sheet as the first embodiment, which is characterized by the method for producing an adhesive sheet including the following steps (I) to (II).

(I) a step of preparing an adhesive sheet before forming at least a substrate, an adhesive layer, and a release sheet, and (II) an adhesive laminate including the substrate and the adhesive layer on the release sheet It is formed into an adhesive body attachment part for adhesion to an adherend and a physical property measurement part for physical property measurement of an adhesive laminate, and the adhesive body attachment part and the physical property measurement part are arranged on a plane. The steps for obtaining the adhesive sheet on the same release sheet are as follows, focusing on the points different from the first embodiment. The second embodiment of the present invention is illustrated and described in detail.

1. Step (I): Preparation steps for adhesive sheet

Step (I) is a step of preparing an adhesive sheet before forming processing in which at least a base material, an adhesive layer and a release sheet are laminated.

The above steps can be performed by conventional methods.

More specifically, for example, when an acrylic non-activating energy ray-curable adhesive composition is used, the base material is formed by applying and drying the adhesive composition to a release sheet to form an adhesive layer. It is preferable to laminate on the obtained adhesive layer.

In addition, the adhesive sheet before the forming process is a strip-shaped continuous body that is manufactured in advance. If necessary, after the subsequent forming process, it can be cut into individual sheets at predetermined intervals.

2. Step (II): forming process step

In step (II), as shown in FIGS. 6 (a) to (e), the adhesive laminate 10 including the base material 6 and the adhesive layer 4 is formed on the release sheet 2 to form an adhesive body sticker. The attachment part 12 and the physical property measurement part (not shown), and the adhesive body attachment part 12 and the physical property measurement part (not shown) are arranged on the same release sheet 2 to obtain an adhesive sheet. 20 steps.

The above-mentioned forming processing can be performed by a conventionally known method, for example, forming by punching processing or laser processing shown in Figs. 6 (a) to (b).

In addition, Figs. 6 (a) to (b) are side sectional views showing the steps of the punching process. Illustration.

In addition, as the forming process, as shown in Figs. 6 (a) to (b), the first processing means 214 having a planar shape corresponding to the adherent body attaching portion 12 and the corresponding physical property measuring portion (not shown) are used. It is preferable that the die-cutting machine 200 which is a second processing means (not shown) in a planar shape performs die-cutting.

The reason is that as long as the punching processing using the above-mentioned punching processing machine is used, the engineering history of the physical property measurement part can be infinitely close to the engineering history of the adherence part, and the physical property measurement is performed using the physical property measurement part. , You can more easily and accurately measure the physical properties of the adherent part.

In addition, in the punching process shown in Figs. 6 (a) to (b), the adhesive layer 4 of the adherence-applying portion 12 shown in Figs. 4 (a) to (c) has a part for manufacturing. An adhesive sheet 20 in a non-contact portion 50 that is not in contact with the adherend 100.

Hereinafter, the punching processing shown in FIGS. 6 (a) to (b) will be specifically described.

That is, as shown in FIG. 6 (a), the adhesive sheet 20 ′ before the forming process is moved toward the fixed die pitch at a certain transfer pitch in a state where the upper die frame 210 and the lower die frame 220 of the die-cutting machine 200 are separated. After the transfer in the direction E, as shown in FIG. 6 (b), during the transfer period, the upper die frame 210 and the lower die frame 220 are pressurized and punched out.

More specifically, as shown in Figs. 6 (c) to (e), the first processing of the upper die frame 210 is performed on the adhesive laminated body 10 including the laminated body composed of the base material 6 and the adhesive layer 4. Means 214 formation and adhesion thoughtfulness A cutout corresponding to the planar shape of the portion 12 is attached, and a cutout corresponding to the planar shape of the physical property measurement portion 14 is formed by a second processing means (not shown) of the upper mold frame 210.

In addition, Fig. 6 (c) is a top view of the adhesive sheet obtained by the punching processing steps shown in Figs. 6 (a) to (b), and Fig. 6 (d) is obtained by passing through 6 (c) 6 (e) is a cross-sectional view when the adhesive sheet is cut along a plane passing the line YY in FIG. 6 (c).

At the same time, the concave portion 212 of the upper mold frame 210 and the convex portion 222 of the lower mold frame 220 are positioned at a position corresponding to the adhesive body attachment portion 12 of the adhesive sheet 20 'before the forming process. By forming an arch shape, the non-contact portion 50 is formed in the adhesive body attachment portion 12.

After that, when the upper mold frame 210 and the lower mold frame 220 are separated, the continuum of the adhesive sheet 20 and the pre-processed adhesive sheet 20 'are moved toward the moving direction E only by a certain moving pitch amount, and the above steps are repeated.

Then, the continuum of the adhesive sheet 20 obtained by repeating the above steps is cut into a single sheet, and the final adhesive sheet 20 is shown in FIGS. 6 (c) to (e).

In addition, as shown in FIGS. 6 (c) to (e), the final adhesive sheet 20 is a portion other than the adhesive body attachment portion 12 and the physical property measurement portion 14 of the adhesive laminate 10 by peeling and removing.

According to the above, when the adhesive sheet is used, it is possible to easily peel off the adherent part or the physical property measurement part.

The peeling and removing step may be performed at any time from the punching process to the cutting or winding step, or may be omitted depending on the occasion.

In addition, in one example, Figs. 6 (a) to (b) have been specifically described. The steps of the die-cutting process are shown, but the order of the die-cutting process for forming the adherent part and the part for measuring the physical properties, the uneven process for forming the non-contact part, and the cutting process for cutting into a single sheet are not particularly limited.

Therefore, for example, after the adhesive sheet before the forming process is cut into a single sheet, the non-contact portion may be formed by the uneven process, and then the punching process may be performed.

Alternatively, after the die-cutting of the adhesive sheet before the forming process, the sheet may be cut into a single sheet, and finally the non-contact portion may be formed by the uneven process.

Alternatively, after the die-cutting of the pressure-sensitive adhesive sheet before the forming process, the non-contact portion may be cut into a single sheet by the uneven process.

[Industrial availability]

As described above in detail, according to the adhesive sheet of the present invention, an adhesive laminate composed of a base material and an adhesive layer is processed on the release sheet to form an adhesive body attachment portion for attaching to the adhesive body. And the physical property measurement part for the physical property measurement of the adhesive laminate, and the adhesive body attachment part and the physical property measurement part are arranged on the same release sheet in a plane, thereby irrespective of the adhesive laminate (adhesive body patch) Whatever the shape of the attached part), the physical properties of the adhesive laminate can be easily and accurately measured.

Therefore, in the adhesive sheet and the like of the present invention, it is expected that the adhesive sheet having a very small protective film or a label having a cutout portion, etc., which has been difficult to measure physical properties such as adhesive force after forming processing, may have significant quality control. Promotion.

Claims (13)

An adhesive sheet is an adhesive sheet formed by laminating at least a base material, an adhesive layer, and a release sheet, and is characterized in that an adhesive laminate including the above-mentioned base material and the adhesive layer is formed on the release sheet and processed into The area of the planar shape of the above-mentioned adhesive body attachment part and the physical property measurement part for physical property measurement of the above-mentioned adhesive laminate are set to a value of 400 mm ² or less ; And placing the above-mentioned part for attaching the adherent body and the above-mentioned part for measuring physical properties on the same above-mentioned release sheet. An adhesive sheet is an adhesive sheet formed by laminating at least a base material, an adhesive layer, and a release sheet, and is characterized in that an adhesive laminate including the above-mentioned base material and the adhesive layer is formed on the release sheet and processed into An adhesive body attachment portion for attaching to an adherend and a physical property measurement portion for measuring the physical properties of the adhesive laminate, the adhesive body attachment portion having a cutout portion; and the adhesive body attachment portion Parts are planarly arranged on the same release sheet as the part for measuring the physical properties. An adhesive sheet is an adhesive sheet formed by laminating at least a base material, an adhesive layer, and a release sheet, and is characterized in that an adhesive laminate including the above-mentioned base material and the adhesive layer is formed on the release sheet and processed into The adhesive layer for sticking to the adherend and the physical property measuring part for measuring the physical properties of the above-mentioned adhesive laminate, the adhesive layer of the above-mentioned adhesive-sticking portion has a part of which is non-adhered The non-adhesive portion formed is processed; the above-mentioned adhesive body attachment portion and the above-mentioned physical property measurement portion are planarly arranged on the same release sheet. An adhesive sheet is an adhesive sheet formed by laminating at least a base material, an adhesive layer, and a release sheet, and is characterized in that an adhesive laminate including the above-mentioned base material and the adhesive layer is formed on the release sheet and processed into The adhesive layer for sticking to the adherend and the physical property measuring part for measuring the physical properties of the above-mentioned adhesive laminate, the adhesive layer of the above-mentioned adhesive-sticking part has a part that is not related to the adherend A non-contact portion that is in contact with each other; the above-mentioned adhesive body attachment portion and the above-mentioned physical property measurement portion are planarly arranged on the same release sheet. The pressure-sensitive adhesive sheet according to any one of claims 1 to 4, wherein the planar shape of the physical property measurement portion is selected from a rectangle, a substantially rectangular shape, an oval shape, a substantially elliptical shape, a circular shape, and a substantially circular shape. Select at least one of the groups. A method for manufacturing an adhesive sheet is the method for manufacturing an adhesive sheet as described in item 1 of the scope of patent application, which is characterized by the method for manufacturing an adhesive sheet including the following steps (I) to (II), (I) preparing at least The step of laminating a base material, an adhesive layer, and a release sheet before forming and forming the adhesive sheet, and (II) forming an adhesive laminate including the base material and the adhesive layer on the release sheet, and forming the adhesive layer. The flat-shaped area for sticking to the adherend has an area of 400 mm ² or less, and a part for measuring the physical properties for measuring the physical properties of the above-mentioned adhesive laminate. The step of obtaining a pressure-sensitive adhesive sheet by disposing a part on the same plane as the part for measuring the physical properties described above on the same release sheet. For example, in the method for manufacturing an adhesive sheet according to item 6 of the scope of patent application, in the step (II), the forming process is performed using the first processing means having a planar shape corresponding to the portion for applying the adherend and corresponding to the above. The punching machine of the second processing means of the planar shape of the part for measuring the physical properties performs punching. A method for manufacturing an adhesive sheet is the method for manufacturing an adhesive sheet as described in item 2 of the scope of patent application, which is characterized by the method for manufacturing an adhesive sheet including the following steps (I) to (II), (I) preparing at least The step of laminating a base material, an adhesive layer, and a release sheet before forming and forming the adhesive sheet, and (II) forming an adhesive laminate including the base material and the adhesive layer on the release sheet, and forming the adhesive layer. An adhesive body attaching portion for attaching to the adherend and a physical property measuring portion for measuring the physical properties of the adhesive laminate, the adhesive body attaching portion having a cutout portion; and the adhesive body attaching The step of obtaining a pressure-sensitive adhesive sheet by disposing a part on the same plane as the part for measuring the physical properties described above on the same release sheet. For example, in the method for manufacturing an adhesive sheet according to item 8 of the scope of patent application, in the step (II), the forming process is performed using the first processing means having a planar shape corresponding to the portion for applying the adherend and corresponding to the above. The punching machine of the second processing means of the planar shape of the part for measuring the physical properties performs punching. A method for manufacturing an adhesive sheet is the method for manufacturing an adhesive sheet as described in item 3 of the scope of patent application, which is characterized by the method for manufacturing an adhesive sheet including the following steps (I) to (II), (I) preparing at least The step of laminating a base material, an adhesive layer, and a release sheet before forming and forming the adhesive sheet, and (II) forming an adhesive laminate including the base material and the adhesive layer on the release sheet, and forming the adhesive layer. The adhesive layer for adherence to the adherend and the physical property measurement part for measuring the physical properties of the adhesive laminate are formed, and the adhesive layer of the adhesive adherence part has a part of which is non-applied. A non-adhesive portion formed by an adhesive treatment; and a step of arranging the above-mentioned adhesive body attachment portion and the above-mentioned physical property measurement portion on the same peeling sheet to obtain an adhesive sheet. For example, in the method for manufacturing an adhesive sheet according to item 10 of the scope of patent application, in the step (II), the forming process is performed using the first processing means having a planar shape corresponding to the portion for applying the adherend and corresponding to the above. The punching machine of the second processing means of the planar shape of the part for measuring the physical properties performs punching. A method for manufacturing an adhesive sheet is the method for manufacturing an adhesive sheet as described in item 4 of the scope of patent application, which is characterized by the method for manufacturing an adhesive sheet including the following steps (I) to (II), (I) preparing at least The step of laminating a base material, an adhesive layer, and a release sheet before forming and forming the adhesive sheet, and (II) forming an adhesive laminate including the base material and the adhesive layer on the release sheet, and forming the adhesive layer. The adhesive layer for adherence to the adherend and the physical property measurement part for measuring the physical properties of the adhesive laminate are formed. The adhesive layer of the adhesive adherence part has a part which is not adhered to the adhesive layer. A non-contact portion for body contact; and a step of disposing the above-mentioned part for attaching an adherent body and the above-mentioned part for measuring physical properties on the same release sheet to obtain an adhesive sheet. For example, in the method for manufacturing an adhesive sheet according to item 12 of the scope of application for the patent, in the step (II), the forming process is performed using the first processing means having a planar shape corresponding to the portion for applying the adherend and corresponding to the above. The punching machine of the second processing means of the planar shape of the part for measuring the physical properties performs punching.