KR20170022973A - Adhesive sheet and production method for adhesive sheet - Google Patents

Abstract

A pressure-sensitive adhesive sheet comprising at least a base material, a pressure-sensitive adhesive layer and a release sheet laminated thereon, wherein the pressure-sensitive adhesive sheet and the pressure-sensitive adhesive sheet are provided with a pressure-sensitive adhesive sheet capable of clearly distinguishing characteristics of the pressure-sensitive adhesive laminate regardless of the form of the pressure- And a manufacturing method thereof. A pressure-sensitive adhesive sheet comprising at least a substrate, a pressure-sensitive adhesive layer, and a release sheet laminated thereon, wherein the pressure-sensitive adhesive laminate comprising a substrate and a pressure-sensitive adhesive layer is provided on an exfoliated sheet to be adhered to an adherend And a discriminating portion for discriminating characteristics of the adhesive laminate, and the portion for attaching the adherend and the discriminating portion are arranged on the same releasing sheet in a plane.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure-sensitive adhesive sheet,

The present invention relates to a pressure-sensitive adhesive sheet and a process for producing the pressure-sensitive adhesive sheet.

Particularly, as the pressure-sensitive adhesive sheet (pressure-sensitive adhesive sheet with release sheet) formed by laminating at least the substrate, the pressure-sensitive adhesive layer and the release sheet, the pressure-sensitive adhesive layer Sensitive adhesive sheet and a method of manufacturing the same.

Conventionally, a label for display for displaying a predetermined content, a fixing tape for fixing a component in the interior of an electric appliance or the like, or a protective film for protecting components from dust and scratches , A pressure-sensitive adhesive layer formed by laminating a base material and a pressure-sensitive adhesive layer suitable for each application.

Such a viscous laminate may have various forms depending on the use thereof, and it may be variously varied, for example, those having a very small size or a cut-out portion (for example, Patent Document 1).

That is, Patent Document 1 discloses a printer having a printer housing and a platen roller in a printing portion for printing on a continuous label conveyed on a conveying path formed in the printer housing, And a control section for controlling the detecting section and the printing section so that the interval between the label outlet of the printer housing and the platen roller is set as the minimum label printing area in the conveying direction which is the limit of the minimum dimension as the printable label size, The continuum is a very small label continuum having a base sheet and a plurality of small labels having a pitch in the minimum label printing area while being adhered to the ground, A method of printing a minimal label continuum for printing on a label is disclosed. More specifically, by inserting a slit in the width direction in accordance with the size of each of the minimum labels in the minimum label area within the unit of the minimum label which can be arranged by a predetermined number of sheets within one unit of the minimum label printing area, The label placement area in which the label is formed is partitioned and the print content of the predetermined number of the minimum labels is supplied to the label placement area of each of the minimum labels so that the minimum label printing area and the minimum label printing area And the minimum labeling number is smaller than the number of labeling areas in a unit of day, the minimum labeling area is sequentially printed from the minimum label located at the beginning of the minimum labeling area.

Japanese Patent No. 4769109 (claims)

However, in the case of a small label obtained by the printing method of a minimal label continuum described in Patent Document 1, if there exist a plurality of labels having the same or similar appearance as the minimal label but different characteristics such as adhesive strength depending on the application, It sometimes becomes difficult to identify the user.

For this reason, there has been a problem in that a worker is likely to confuse labels having different characteristics at work sites where various labels are stuck to various adherends.

Further, in the case of a very small label described in Patent Document 1, it is difficult to easily and precisely measure a characteristic since a label is extremely small even if it is attempted to measure and discriminate characteristics such as adhesive force when actual confusion arises. As a result, And it became difficult to identify them.

Accordingly, there has been a demand for a technique capable of clearly distinguishing the characteristics of the adhesive laminate regardless of the form of the adhesive laminate.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a pressure-sensitive adhesive laminate comprising a substrate and a pressure-sensitive adhesive layer formed on a release sheet, It is possible to find out that the above-mentioned problem can be solved by forming and processing the identification part for identifying the characteristics of the adhesive laminate, and arranging the part for the adherend attachment and the identification part in the same plane on the same release sheet , Thereby completing the present invention.

That is, an object of the present invention is to provide a pressure-sensitive adhesive sheet which can clearly distinguish characteristics of a pressure-sensitive adhesive laminate regardless of the form of a pressure-sensitive adhesive laminate (portion for an adherend patch) .

According to the present invention, there is provided a pressure-sensitive adhesive sheet comprising at least a substrate, a pressure-sensitive adhesive layer and a release sheet laminated thereon, wherein the pressure-sensitive adhesive laminate comprising a substrate and a pressure-sensitive adhesive layer is provided on an adherend for adhering to an adherend And the identification part is formed in the same plane on the same release sheet. The adhesive sheet according to any one of claims 1 to 3, A pressure-sensitive adhesive sheet is provided, and the above-described problems can be solved.

That is, in the case of the pressure-sensitive adhesive sheet of the present invention, since the pressure-sensitive adhesive laminate is subjected to the molding process by dividing the adherend laminate into the part to be adhered to the adherend and the discriminating part, the part of the adherend to be adhered has the same or similar planar shape, As in other cases, it is possible to clearly identify a plurality of types of pressure-sensitive adhesive sheets which are difficult to identify as the plane shape of the portion to be adhered to the adherend.

In addition, it is possible to discriminate by coloring or printing, but in such a case, a step of performing coloring, printing, and the like is required separately, resulting in a cost-related problem.

Particularly, in the technical field of the adhesive sheet having a short lead time, there is also a problem in time by carrying out these processes.

With respect to this point, in the case of the adhesive sheet of the present invention, it is possible to mold the part for adherend application and form the identification part at the same time, and this problem can be solved.

In forming the pressure-sensitive adhesive sheet of the present invention, the planar shape of the identification portion may be a rectangular shape, a substantially rectangular shape, an elliptical shape, a substantially elliptical shape, a circular shape, a substantially circular shape, a triangular shape, , Alphabetic characters, and numbers.

By such a constitution, it is possible to more clearly identify by using the identification portion.

Further, another aspect of the present invention is a method for producing a pressure-sensitive adhesive sheet, which comprises the following steps (I) to (II).

(I) a step of preparing a pressure-sensitive adhesive sheet which is formed by laminating at least a substrate, a pressure-sensitive adhesive layer and a release sheet,

(II) base material and a pressure-sensitive adhesive layer are laminated on a release sheet in such a manner that a portion to be adhered to the adherend is formed as a discriminating portion for identifying the characteristics of the pressure-sensitive adhesive laminate, A step of obtaining a pressure-sensitive adhesive sheet in which a part for attaching an adherend and a discriminating part are arranged in a plane on the same release sheet

That is, in the method for producing a pressure-sensitive adhesive sheet of the present invention, a pressure-sensitive adhesive laminate comprising a substrate and a pressure-sensitive adhesive layer is formed on a release sheet by a pressure- And the part for attaching the object to be adhered and the part for identification are disposed on the same release sheet on the same plane. Therefore, the shape of the part to be adhered to the object to be adhered can be divided into a plurality of It is possible to obtain a pressure-sensitive adhesive sheet which can more clearly identify the pressure-sensitive adhesive sheet.

Further, in carrying out the method for producing a pressure-sensitive adhesive sheet of the present invention, it is preferable that, in the step (II), the first processing means corresponding to the planar shape of the portion to be adhered to the adherend, It is preferable to perform the punching process using a punching machine having the corresponding second processing means.

By doing so, the identification portion can be formed and processed simultaneously with the portion to be adhered to the adherend.

1 (a) to 1 (b) are diagrams for explaining a pressure-sensitive adhesive sheet of the present invention.
Figs. 2 (a) to 2 (c) are views for explaining the pressure-sensitive adhesive sheet of the present invention. Fig.
Figs. 3 (a) to 3 (b) are views for explaining the pressure-sensitive adhesive sheet of the present invention. Fig.
4 (a) to 4 (e) are diagrams for explaining a production method of a pressure-sensitive adhesive sheet of the present invention.

[First Embodiment]

1 (a) to 1 (b), a first embodiment of the present invention is a pressure-sensitive adhesive sheet (a pressure-sensitive adhesive sheet) comprising at least a substrate 6, a pressure-sensitive adhesive layer 4, and a release sheet 2 Sensitive adhesive layer 10 composed of a base material 6 and a pressure-sensitive adhesive layer 4 is provided on an exfoliating sheet 2 to have an adherend attaching portion 12 to be adhered to an adherend, And the identification part 14 for identifying the characteristic of the adhesive laminate 10 and the part 12 for attaching the adherend and the identification part 14 are formed on the same release sheet 2 ) Of the adhesive sheet (20).

1 (a) is a plan view of the pressure-sensitive adhesive sheet of the present invention, and FIG. 1 (b) is a cross-sectional view of the pressure- Sectional view.

1 (b), portions other than the adherend attachment portion 12 and the physical property measuring portion 14 in the adhesive laminate 10 are shown in a state in which they are removed by peeling off 2 (b)).

Hereinafter, the first embodiment of the present invention will be described in detail with reference to the drawings appropriately.

1. Peeling sheet

The release sheet in the present invention is not particularly limited and includes, for example, a polyester film such as polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate, a polyolefin film such as polypropylene and polyethylene, For example, a silicone or rubber-based releasing agent is applied to the release material of the release layer to provide a release layer.

The thickness of the release sheet is preferably in the range of usually 20 to 150 mu m, more preferably in the range of 25 to 75 mu m.

2. Adhesive laminate

In the present invention, the viscous laminate is a laminate including a substrate and a pressure-sensitive adhesive layer, and means a portion other than the release sheet in the pressure-sensitive adhesive sheet.

Hereinafter, the base material and the pressure-sensitive adhesive layer which are constituent elements of the adhesive laminate will be described.

(1)

The base material in the present invention is not particularly limited and may be appropriately selected from a plastic film, a paper base material, a nonwoven fabric and the like conventionally used as a base material of a pressure sensitive adhesive sheet.

For example, the plastic film may be a polyester film such as polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate, a polyethylene film, a polypropylene film, a polyvinyl chloride film, a polyvinylidene chloride film, a polyvinyl alcohol film, A polyimide film, an ethylene-vinyl acetate copolymer film, a polystyrene film, a polycarbonate film, a polymethylpentene film, a polysulfone film, a polyetheretherketone film, a polyethersulfone film, a polyphenylene sulfone film, A fluororesin film, a polyamide film, an acrylic resin film, a norbornene resin film, and a cycloolefin resin film.

The film thickness of the base material is preferably in the range of usually 10 to 300 mu m, more preferably in the range of 20 to 150 mu m.

(2) Pressure-sensitive adhesive layer

The pressure-sensitive adhesive layer in the present invention is not particularly limited, and conventionally known pressure-sensitive adhesives such as acrylic, silicone, urethane, rubber can be used.

As the type of the pressure-sensitive adhesive, an active energy radiation curing type or hot-melt type adhesive may be used.

The thickness of the pressure-sensitive adhesive layer is preferably in the range of usually 1 to 200 탆, more preferably in the range of 5 to 50 탆.

(3) Other layers

In addition to the base material and the pressure-sensitive adhesive layer, an intermediate layer and other layers such as the adhesive layer (adhesion-promoting layer) may be laminated on the pressure-sensitive adhesive laminate.

(4) Parts for adherend attachment

The adhesive laminate of the present invention is characterized in that it has a portion for adherend application to be adhered to an adherend.

Although there is no particular limitation on the portion for attaching the adherend to the adherend, in the following description, when a plurality of adhesive sheets having the adhesive laminate having different characteristics are confused with each other, An explanation will be given by exemplifying an aspect in which an identification part to be described below is particularly required in the case where the characteristic measurement using the part for attaching the adherend becomes particularly difficult, that is, in the case of identifying the adhesive sheet.

(4) -1 Area

First, as shown in Fig. 1 (a), when the area in the shape of the part 12 to be adhered to the object is less than or equal to 400 mm < 2 > The sun, which is a value.

The reason is that if the area of the portion to be adhered to the adherend has a value of 400 mm 2 or less, the area becomes insufficient, and even if the portion to be adhered to the adherend is used as a direct sample, This is because it is difficult to measure the characteristics using the portion to be adhered to the adherend.

The planar shape of the portion to be adhered to the adherend is circular in FIG. 1 (a), but is not particularly limited, and may be any shape such as an ellipse or a rectangle depending on the application.

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

(4) -2 Non-contact portion

2 (a) to 2 (c), the pressure-sensitive adhesive layer 4 of the part 12 to be adhered to the object to be adhered is in contact with the pressure- And a non-contact portion 50 that is not in contact with the adherend 100 in part.

This is because, when the portion to be adhered to the adherend has a non-contact portion, the characteristics of the non-contact portion are influenced by the measurement result, so that it becomes difficult to measure the property using the portion to be adhered to the adherend.

The portion to be adhered with the non-contact portion having such a non-contact portion is used when, for example, a protective film is stuck to the lens portion so that the pressure sensitive adhesive layer does not come into direct contact with the lens portion when assembling a precision component such as a lens unit of a digital camera do.

Therefore, the planar shape, the three-dimensional shape, the arrangement and the number of the non-contact portions are not particularly limited, but roughly examples are shown in Figs. 2 (a) to 2 (c).

Further, the non-contact portion can be formed by, for example, punching a portion to be adhered to the adherend, and press-forming the concave portion of the upper mold and the convex portion of the lower mold.

2 (a) is a plan view of the pressure-sensitive adhesive sheet of the present invention, and Fig. 2 (b) is a plan view of the pressure- And Fig. 2C is a view showing a state in which a part to be adhered to the adherend in the adhesive sheet shown in Fig. 2B is attached to an adherend. Fig.

(5) Identification part

The adhesive laminate of the present invention is characterized by having a discriminating portion for identifying the characteristics of the adhesive laminate.

The reason for this is as follows. That is, a plurality of types of adhesive sheets which are difficult to identify as the planar shape of the portion to be adhered to the object to be adhered are clearly identified I can do it.

Hereinafter, the identification part will be described in detail.

(5) -1 Identification target characteristic

The properties to be identified by the identification portion include, but are not limited to, for example, the gel fraction, the storage elastic modulus in the adhesive layer, the adhesive force in the whole substrate or the adhesive laminate, the holding power, the total light transmittance , A haze value, and the like.

(5) -2 shape

The planar shape of the identification portion may be a rectangular shape, a substantially rectangular shape, an elliptical shape, a substantially elliptical shape, a circular shape, a substantially circular shape, a triangular shape, a substantially triangular shape, a pentagonal shape, At least one member selected from the group consisting of molding, alphabet, and number is preferable.

This is because the planar shape of the identification portion can be formed in such a shape so that the identification portion can be used to more clearly identify it.

In addition, even if it is difficult to measure the characteristics such as the adhesive force in the adhesive laminate by the portion for attaching the adherend, the identification portion has such a planar shape that the identification portion can be easily and accurately The characteristics can be measured.

It is also preferable that the planar shape of the identification portion is character information, such as a number shown in Fig. 3A or an alphabet shown in Fig. 3B.

This is because, if such character information is used, the characteristics of the adhesive laminate can be more clearly identified.

3 (a) to 3 (b) are plan views of the pressure-sensitive adhesive sheet of the present invention.

(5) -3 size

Further, it is preferable that the maximum diameter in the plane shape of the identification portion is within a range of 20 to 300 mm.

The reason for this is that when the maximum diameter is less than 20 mm, it is difficult to recognize the planar shape of the identification portion and the identification may be deteriorated. On the other hand, when the maximum value exceeds 300 mm, the area of the portion to be adhered to the adherend which can be placed on the same release sheet may be excessively limited.

The maximum diameter in the present invention means the diameter of the circumscribed circle when a circle circumscribing the plane shape of the identification portion is drawn.

When the planar shape of the identification portion is a rectangle, a substantially rectangular shape, an elliptical shape, or a substantially elliptical shape, the length of the major axis direction is preferably 20 to 300 mm , More preferably within a range of 30 to 250 mm, and more preferably within a range of 45 to 200 mm.

The length (width) in the minor axis direction is preferably within a range of 1 to 30 mm, more preferably within a range of 1.5 to 28 mm, and more preferably within a range of 2 to 25 mm Is more preferable.

(5) -4 placement

In the present invention, as shown in Figs. 1 (a), 2 (a) and 3 (a) to 3 (b), an adherend attaching portion 12, 14) are arranged on the same peeling sheet (2) in a plane.

The reason for this is that the configuration of the portion to be adhered to the adherend is shown by the identification portion disposed on the same release sheet on the same peel sheet so that confusion with other adhesive sheets can be reliably prevented .

The planar arrangement of the portion to be adhered to the adherend is basically the same as in the case of the conventional pressure sensitive adhesive sheet having no discriminating portion in FIGS. 1 (a), 2 (a), 3 It is preferable to arrange them so as to maximize the molding area within a range that does not deteriorate the handling property in use.

On the other hand, an aspect of planar arrangement of the identification portion may be, for example, as shown in Figs. 1 (a) and 2 (a) It is preferable that the position near the corner surrounded by the two sides as shown in Figs. 3 (a) to 3 (b) is planarly arranged on the outer side of the portion where the part to be adhered is planarly arranged.

The reason for this is that it is possible to suppress the inhibition of the planar arrangement of the portion to be adhered to the adherend with such a planar arrangement and to suppress the handling property when using the adherend portion for adherend, to be.

However, the surface to be adhered to the adherend may be arranged so as to pass through the portion where the adherend application portion is disposed, provided that the surface arrangement of the adherend application portion is not impeded and the handling property is not impaired.

[Second Embodiment]

A second embodiment of the present invention is a method for producing a pressure-sensitive adhesive sheet as a first embodiment, which comprises the following steps (I) to (II).

(I) a step of preparing a pressure-sensitive adhesive sheet which is formed by laminating at least a substrate, a pressure-sensitive adhesive layer and a release sheet,

(II) base material and a pressure-sensitive adhesive layer are laminated on a release sheet in such a manner that a part for attaching an adherend to be adhered to an adherend and a part for identification for identifying physical properties of the pressure- A step of obtaining a pressure-sensitive adhesive sheet in which a part for attaching an adherend and a discriminating part are arranged in a plane on the same release sheet

Hereinafter, the second embodiment of the present invention will be described in detail with reference to the drawings mainly on the points different from the first embodiment.

1. Process (I): Preparation of adhesive sheet

The step (I) is a step of preparing a pressure-sensitive adhesive sheet, which is formed by laminating at least a substrate, a pressure-sensitive adhesive layer and a release sheet.

Such a process can be carried out by a conventionally known method.

More specifically, a description will be given by taking as an example the case of using an acrylic-based inactive energy ray-curable pressure-sensitive adhesive composition. The pressure-sensitive adhesive composition is applied to a release sheet and dried to form a pressure-sensitive adhesive layer. .

Further, the pressure-sensitive adhesive sheet before the molding process can be produced as a continuum of objects and, if necessary, can be cut into sheets at predetermined intervals after a subsequent molding process.

2. Process (II): Forming process

4 (a) to 4 (e), the pressure-sensitive adhesive laminate 10 comprising the base material 6 and the pressure-sensitive adhesive layer 4 is laminated on the release sheet 2 (Not shown) to form an adherend attaching portion 12 and an identifying portion (not shown) on the same peeling sheet (not shown) (20) in which the pressure-sensitive adhesive sheet (20) is disposed in a plane on the substrate (2).

Such molding can be performed by a conventionally known method, and can be molded by, for example, punching or laser machining as shown in Figs. 4 (a) to 4 (b).

4 (a) to 4 (b) are side sectional views showing the punching process.

4 (a) to 4 (b), the first processing means 214 corresponding to the planar shape of the portion 12 for attaching the workpiece, and the first processing means 214 corresponding to the identification portion It is preferable to perform the punching process by using the punching machine 200 having the second machining means (not shown) corresponding to the planar shape of the workpiece.

The reason for this is that, in the case of punching using such a punching machine, the identification portion can be formed and processed simultaneously with the portion to be adhered to the adherend.

4 (a) to 4 (b), the pressure-sensitive adhesive layer 4 of the portion 12 for adherend application as shown in Figs. 2 (a) to 2 (c) The adhesive sheet 20 of the present embodiment having the non-contact portions 50 not in contact with the adherend 100 is manufactured.

Hereinafter, the punching process shown in Figs. 4 (a) to 4 (b) will be described in detail.

That is, as shown in FIG. 4A, the adhesive sheet 20 'before the forming process is placed in a state where the upper mold 210 and the lower mold 220 of the punching machine 200 are separated from each other And is conveyed in the conveying direction E at a constant conveying pitch and is then punched by the upper and lower molds 210 and 220 during the conveying stopping period as shown in FIG. 4 (b).

More specifically, as shown in Figs. 4 (c) to 4 (e), the adhesive laminate 10, which is a laminate composed of the substrate 6 and the pressure-sensitive adhesive layer 4, (Not shown) of the upper mold 210 by the first processing means 214 in the upper mold 210 and the incision corresponding to the plane shape of the part 12 to be adhered is formed by the first processing means 214 in the upper mold 210, A cut corresponding to the planar shape of the identification portion 14 is formed.

4 (c) is a plan view of the pressure-sensitive adhesive sheet obtained by the punching process shown in Figs. 4 (a) and 4 (b), and Fig. 4 (d) Fig. 4 (e) is a cross-sectional view when the pressure-sensitive adhesive sheet is cut in a plane passing through the line segment YY in Fig. 4 (c) to be.

At the same time, the recessed portion 212 of the upper mold 210 and the protruded portion 222 of the lower mold 220 form the adherend attaching portion 12 of the pressure-sensitive adhesive sheet 20 ' The non-contact portion 50 is formed in the portion 12 for adherend attachment.

Thereafter, when the upper mold 210 and the lower mold 220 are separated from each other, the continuity of the adhesive sheet 20 and the adhesive sheet 20 'before processing is fed in the feeding direction E by a constant feeding pitch, The above process is repeated.

The final adhesive sheet 20 shown in Figs. 4 (c) to 4 (e) can be obtained by cutting the continuous sheet of the pressure-sensitive adhesive sheet 20 obtained by repeating the above-described steps into sheets.

In the final adhesive sheet 20 shown in Figs. 4 (c) to 4 (e), portions other than the adherend attaching portion 12 and the identifying portion 14 in the adhesive laminate 10 Is peeled off.

This is because when the pressure-sensitive adhesive sheet is used, the part for attaching the adherend or the identifying part can be easily peeled off.

The peeling removal process may be performed at any point from the punching process to the cutting or winding process, and the process may be omitted in some cases.

Although the punching process shown in Figs. 4A and 4B has been specifically described as an example, the punching process for forming the portion to be adhered and the identifying portion, the uneven process for forming the non-contact portion, There is no particular limitation on the order of cutting processing to be cut into sheets.

Therefore, for example, after the pressure-sensitive adhesive sheet before the forming process is cut into sheets, the non-contact portions may be formed by the irregularity process, and the punching process may be performed at the end.

Alternatively, the pressure-sensitive adhesive sheet before the forming process may be punched, cut into sheets, and finally, a non-contact portion may be formed by irregularity processing.

Alternatively, after the pressure-sensitive adhesive sheet before the forming process is punched, the non-contact portion may be formed by the irregularity process, and the sheet may be cut into sheets.

As described above, according to the pressure-sensitive adhesive sheet of the present invention, the pressure-sensitive adhesive laminate comprising the substrate and the pressure-sensitive adhesive layer is provided on the release sheet in such a manner that a portion for adherend application to be adhered to the adherend, (Part for an adherend attachment) is formed by forming a part for an adherend attachment and a part for identification in a plane on the same release sheet, , The characteristics of the adhesive laminate can be clearly identified.

Accordingly, the pressure-sensitive adhesive sheet or the like of the present invention prevents the operator from confusing labels or protective films having different characteristics at a work site where various labels or protective films are stuck on an adherend, It is expected to contribute significantly to

The present invention relates to a pressure sensitive adhesive sheet and a pressure sensitive adhesive sheet for pressure sensitive adhesive sheet which are excellent in heat resistance and heat resistance, Wherein the upper mold has a concave portion and the lower mold has a convex portion and a lower mold.

Claims (4)

A pressure-sensitive adhesive sheet comprising at least a substrate, a pressure-sensitive adhesive layer, and a release sheet laminated thereon,
Wherein the adhesive laminate comprising the substrate and the pressure-sensitive adhesive layer comprises a part for adherend to be adhered to an adherend on the release sheet and a part for adhering to the adherend for identification for discriminating the characteristics of the adherent laminate Shaped portion, and at the same time,
Wherein the adherend application portion and the identification portion are disposed in the same plane on the same release sheet. The method according to claim 1,
Wherein the planar shape of the identification portion is at least one selected from the group consisting of a rectangle, an approximate rectangle, an ellipse, a substantially ellipse, a circle, a circle, a triangle, a substantially triangle, a pentagon, Wherein the pressure-sensitive adhesive sheet is one kind of pressure-sensitive adhesive sheet. A method for producing a pressure-sensitive adhesive sheet according to any one of claims 1 to 3,
A process for producing a pressure-sensitive adhesive sheet, which comprises the following steps (I) to (II).
(I) a step of preparing a pressure-sensitive adhesive sheet which is formed by laminating at least a substrate, a pressure-sensitive adhesive layer and a release sheet,
(II) A pressure-sensitive adhesive laminate comprising the base material and the pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer comprises a part for adherend to be adhered to an adherend on the release sheet and an identification part for identifying the characteristics of the pressure- And a step of obtaining a pressure-sensitive adhesive sheet in which the part for attaching the adherend and the identification part are disposed in the same plane on the same release sheet The method of claim 3,
And a punching machine having a first processing means corresponding to a planar shape of the portion to be adhered to the adherend and a second processing means corresponding to a planar shape of the identifying portion in the step (II) And a punching process is carried out using the pressure-sensitive adhesive sheet.

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