JP2014141072A - Laminate and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a laminate, which is capable of efficiently using an adhesive sheet without deteriorating seal performance.SOLUTION: The method for producing a laminate includes: a first attaching step comprising arranging a plurality of double-sided adhesive sheets 30 on a first adherend so that parts of the side faces of the adhesive sheets 30 come close to each other and attaching the adhesive sheets 30 to the first adherend; an injection step comprising applying an adhesive 35 onto an area 30A where the parts of the side faces of the plurality of double-sided adhesive sheets 30 come close to each other and injecting the adhesive 35 into a gap in the area; and a second attaching step for attaching a second adherend to the face, on the side opposite to the face on which the first adherend is attached, of the double-sided adhesive sheets 30.

Description

  The present invention relates to a laminate in which two adherends are pasted using a plurality of double-sided pressure-sensitive adhesive sheets, and a method for producing the same.

  Double-sided PSA sheets are used in various technical fields. For example, in the field of portable electronic devices such as mobile phones and portable information terminals, double-sided pressure-sensitive adhesive sheets are used for fixing between various members. As such a double-sided pressure-sensitive adhesive sheet, there is known a double-sided pressure-sensitive adhesive tape that exhibits good adhesion to an adherend even with a thin tape thickness and has an excellent waterproof function (see, for example, Patent Document 1). .

JP 2009-108314 A

  However, the conventional double-sided pressure-sensitive adhesive sheet used for waterproofing as described above needs to be integrally formed into a predetermined shape by punching or the like, which causes a problem that the pressure-sensitive adhesive sheet cannot be used efficiently.

  Specifically, for example, as shown in FIG. 7, when the double-sided pressure-sensitive adhesive sheet 100 is used by being punched into a frame shape, the inner portion to be punched is discarded as it is. On the other hand, as shown in FIG. 8, when a linear double-sided pressure-sensitive adhesive sheet 110 is combined into a frame shape similar to the double-sided pressure-sensitive adhesive sheet 100 shown in FIG. 7, a plurality of linear double-sided pressure-sensitive adhesive sheets are used. As a result, the number of discarded parts can be reduced and molding can be performed without waste.

  However, as shown in FIG. 8, when a plurality of double-sided PSA sheets are used in combination, there may be a problem in the sealing performance of the bonding region 120 between adjacent PSA sheets depending on the application. For this reason, the present situation is that the pressure-sensitive adhesive sheet is integrally molded and used in applications requiring high sealing performance such as waterproof applications.

  Then, the objective of this invention is providing the laminated body which can use an adhesive sheet efficiently, and its manufacturing method, without reducing sealing performance.

  The method for producing a laminate according to the present invention includes a first pasting step in which a plurality of double-sided pressure-sensitive adhesive sheets are disposed and pasted on a first adherend so that some of these side surfaces are close to each other, An injection step of applying an adhesive to a region where a part of the side surfaces of the plurality of double-sided pressure-sensitive adhesive sheets are close to each other and injecting the adhesive into a gap in the region, and a first covering in the double-sided pressure-sensitive adhesive sheet A second sticking step of sticking a second adherend on the surface opposite to the surface on which the adherend is stuck.

  Further, in the laminate according to the present invention, the first adherend and the second adherend are laminated via a double-sided pressure-sensitive adhesive sheet layer, and the double-sided pressure-sensitive adhesive sheet comprises a plurality of double-sided pressure-sensitive adhesive sheets. A part of the side surfaces is arranged and pasted so as to be close to each other, and regions of the plurality of double-sided pressure-sensitive adhesive sheets where parts of the side surfaces are close to each other are sealed with an adhesive.

  Furthermore, the pressure-sensitive adhesive sheet according to the present invention is a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive surface on both sides, and has a notch on the side surface.

  The manufacturing method of the laminated body which concerns on this invention can use an adhesive sheet efficiently, without reducing sealing performance.

It is sectional drawing which shows schematic structure of an example of a laminated body. It is sectional drawing in the A-A 'line of FIG. It is a top view which shows schematic structure of another example of adhesive sheet arrangement | positioning. It is a top view which shows schematic structure of another example of adhesive sheet arrangement | positioning. It is a top view which shows schematic structure of another example of adhesive sheet arrangement | positioning. It is sectional drawing in the A-A 'line of another example of FIG. It is a top view which shows an example of the conventional adhesive sheet. It is a top view which shows another example of the conventional adhesive sheet.

  An embodiment of the present invention will be described below with reference to FIGS. In the present specification, the “double-sided pressure-sensitive adhesive sheet” includes a tape-shaped material, that is, a “double-sided pressure-sensitive adhesive tape”.

(I) Laminate FIG. 1 is a cross-sectional view illustrating a schematic configuration of an example of a laminate according to the present embodiment. FIG. 2 is a cross-sectional view taken along line AA ′ of FIG.

  As shown in FIG. 1, in the laminated body 50 according to this embodiment, the first adherend 10 and the second adherend 20 are double-sided PSA sheets (hereinafter also referred to as “double-sided PSA sheet layers”) 30. It has the structure laminated | stacked through.

  As shown in FIG. 2, the double-sided pressure-sensitive adhesive sheet 30 is affixed by arranging a plurality of double-sided pressure-sensitive adhesive sheets 30 so that part of their side surfaces are close to each other (preferably in contact with each other). A gap in the region 30 </ b> A where the pressure-sensitive adhesive sheet 30 is close is sealed with an adhesive 35.

  With the above-described configuration, the plurality of double-sided pressure-sensitive adhesive sheets 30 are pasted with part of their side surfaces being close to each other, so that it is not necessary to process the double-sided pressure-sensitive adhesive sheet into a complicated shape, and as a result, discarded double-sided pressure-sensitive adhesive sheet The sheet is reduced and the double-sided PSA sheet can be used efficiently. In addition, since the adjacent regions 30A on the side surfaces of the double-sided PSA sheet are sealed with an adhesive, they have excellent sealing properties.

  Note that the term “close to each other” means, for example, that the distance between each other is 5 mm or less, more preferably 3 mm or less, and even more preferably 1 mm or less.

  Further, the “sealability” means a property of filling a gap or a seam in order to maintain hermeticity, and is not particularly limited as long as such a property is exhibited, but specifically, dustproof and waterproof. Etc.

(Double-sided adhesive sheet)
Although the double-sided pressure-sensitive adhesive sheet 30 is not particularly limited, various known double-sided pressure-sensitive adhesive sheets can be appropriately used depending on the application. Specifically, the double-sided pressure-sensitive adhesive sheet 30 may be a pressure-sensitive adhesive sheet provided with a pressure-sensitive adhesive layer on both sides of a base material, or a base-less pressure-sensitive adhesive composed only of a pressure-sensitive adhesive layer without providing a base material. It may be a sheet. From the viewpoint of processability and the like, a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer on both surfaces of the substrate is preferable.

  The pressure-sensitive adhesive layer is not particularly limited, and can be formed using a known pressure-sensitive adhesive. Examples of such adhesives include acrylic adhesives, rubber adhesives, silicone adhesives, urethane adhesives, and the like.

  The thickness of the pressure-sensitive adhesive layer can be appropriately set depending on the application and is not particularly limited, but is about 1 to 500 μm, preferably 5 to 400 μm, more preferably 10 to 200 μm, still more preferably 30 to 170 μm, Especially preferably, it is 40-150 micrometers, Most preferably, it can be set as about 50-100 micrometers.

  As the substrate, for example, various plastic substrates may be used from the viewpoint of sealing properties. Examples of the plastic constituting the plastic substrate include polyesters such as polyethylene terephthalate and polybutylene terephthalate; polyolefins such as polyethylene and polypropylene; polyimides; polyamides;

  Moreover, you may use a plastic foam base material as said base material. Examples of the plastic foam that can constitute the substrate include polyolefin resin foams such as polyethylene foam and polypropylene foam; polyethylene terephthalate foam, polyethylene naphthalate foam, and polybutylene terephthalate foam. Polyester resin foam such as a body; Polyvinyl chloride resin foam such as a polyvinyl chloride foam; Vinyl acetate resin foam; Polyphenylene sulfide resin foam; Polyamide (nylon) resin foam Amide resin foams such as wholly aromatic polyamide (aramid) resin foams; polyimide resin foams; polyether ether ketone (PEEK) foams; polystyrene foams such as polystyrene foams Body; Urethane resin foam such as polyurethane resin foam; And the like. Moreover, you may use rubber-type resin-made foams, such as a polychloroprene rubber foam, as a plastic foam. The foam structure of these plastic foams is preferably a closed cell structure from the viewpoint of sealing properties.

  The thickness of the substrate is not particularly limited, but is, for example, 2 to 1500 μm, preferably 5 to 1000 μm, more preferably about 5 to 500 μm, further preferably 10 to 400 μm, particularly preferably 30 to 300 μm, most preferably. It can be 50-250 micrometers.

  Although the thickness of the double-sided pressure-sensitive adhesive sheet 30 is not particularly limited, for example, 5 to 2000 μm, preferably 10 to 1500 μm, more preferably 15 to 1000 μm, still more preferably 30 to 500 μm, still more preferably 50 to 400 μm, particularly preferably. It can be about 50 to 250 μm, most preferably 100 to 200 μm.

  The shape formed by arranging a plurality of double-sided pressure-sensitive adhesive sheets 30 in combination is not particularly limited. For example, as shown in FIG. 2, the shape in plan view is a frame shape (frame shape). . Here, a typical example of the frame shape is a shape in which four narrow linear portions (band-like portions) are connected in a seamless state so as to form a square or a rectangle.

  In the case of forming a frame, the width of the narrow linear portion (band-like portion) (typically, the width of one double-sided PSA sheet) is not particularly limited, but for example, about 0.1 mm to 50 mm, preferably Can be about 0.5 mm to 50 mm, more preferably about 0.8 mm to 30 mm.

  The number of the double-sided pressure-sensitive adhesive sheets 30 used for sticking is not particularly limited, but 2 to 10 is preferable, 2 to 6 is more preferable, and 2 to 4 is more preferable from the viewpoint of work efficiency and moldability.

  In the embodiment in which the shape formed by the arrangement of the plurality of double-sided pressure-sensitive adhesive sheets 30 is a frame shape, for example, two L-shaped double-sided pressure-sensitive adhesive sheets 30 may be combined into a frame shape as shown in FIG. The L-shaped double-sided pressure-sensitive adhesive sheet has a shape in which two strip-shaped (strip-shaped) double-sided pressure-sensitive adhesive sheets 30 intersect at substantially right angles.

  Also, as shown in FIG. 2, four rod-shaped (band-shaped) double-sided pressure-sensitive adhesive sheets 30 may be combined into a frame shape, or as shown in FIG. A single-sided (U-shaped) double-sided PSA sheet may be combined to form a frame. The U-shaped double-sided pressure-sensitive adhesive sheet seems to have one strip-shaped (band-shaped) double-sided pressure-sensitive adhesive sheet extending in substantially the same direction on each end of the strip-shaped (band-shaped) double-sided pressure-sensitive adhesive sheet. Shape.

  In the example illustrated in FIGS. 2 to 4, the two adjacent double-sided PSA sheets 30 are close to each other on a plane. More specifically, in the two double-sided pressure-sensitive adhesive sheets 30, a part of their side surfaces (for example, end surfaces) are close to each other on a plane. For example, as shown in FIG. 5, the curved surfaces may be close to each other. More specifically, some of the side surfaces (for example, end surfaces) may be close to each other with curved surfaces. Or you may adjoin by the combination of a recessed part and a convex part.

  Further, from the viewpoint of facilitating injection of the adhesive 35 used for sealing, and from the viewpoint of more surely sealing between the adjacent double-sided PSA sheets, the double-sided PSA sheet 30 has a notch 38 on the side surface located in the region 30A. It is preferable to provide.

  Even if the notched portion 38 is not provided in the double-sided pressure-sensitive adhesive sheet 30, a slight gap may occur between the adjacent double-sided pressure-sensitive adhesive sheets. Therefore, if the adhesive 35 is injected and sealed in this gap, Almost the same effect can be obtained.

  The shape of the notch 38 is not particularly limited as long as the adhesive 35 can be injected. As shown in FIG. 2, for example, when the two-sided pressure-sensitive adhesive sheets 30 are combined and viewed in plan, a notch is formed at an end portion that is close to another double-sided pressure-sensitive adhesive sheet so as to form a predetermined shape. It is preferable to provide it. The predetermined shape may be, for example, a circle or an ellipse, or a polygon such as a triangle or a rectangle. Moreover, the notch part 38 may be provided in both the adjacent double-sided adhesive sheets as shown in FIG. 2, and may be provided only in any one as shown in FIG.

  The notch 38 may penetrate through the double-sided pressure-sensitive adhesive sheet 30 in the thickness direction or may not penetrate therethrough. From the viewpoint of workability such as punching, it is preferable that the double-sided pressure-sensitive adhesive sheet 30 penetrates in the thickness direction.

(adhesive)
The adhesive 35 is not particularly limited, and various known adhesives can be used.

  Specifically, acrylic resin adhesives, α-olefin adhesives, urethane resin adhesives, ether cellulose adhesives, ethylene-vinyl acetate resin adhesives, epoxy resin adhesives, silicone adhesives , Aqueous polymer-isocyanate adhesive, styrene-butadiene rubber solution adhesive, nitrile rubber adhesive, nitrocellulose adhesive, phenol resin adhesive, modified silicone adhesive, polyimide adhesive, polystyrene resin Solvent adhesive, polyvinyl alcohol adhesive, polyvinyl pyrrolidone resin adhesive, polyvinyl butyral resin adhesive, polybenzimidazole adhesive, polymethacrylate resin solution adhesive, urea resin adhesive, resorcinol adhesive Agents and the like. In addition, various types of adhesives such as a hot melt adhesive, a dry adhesive, a moisture curable adhesive, a two-component reaction curable adhesive, and a UV curable adhesive may be used alone or in combination of two or more. it can.

(First adherend)
The first adherend 10 is not particularly limited, but is a component for electronic devices (for example, various types of portable electronic devices such as a mobile phone, a smartphone, a tablet PC, a notebook personal computer, a camera, an electronic notebook, a car navigation system). Parts). Examples include various housings, display panels, backlights, lenses (protective covers), key module members such as mobile phones, shock absorbers, decoration panels such as televisions, battery packs for personal computers, and the like.

(Second adherend)
Although the 2nd to-be-adhered body 20 is not specifically limited, For example, the said components for electronic devices which are the same as or different from the 1st to-be-adhered body 10 are mentioned.

  Specifically, as the laminated body 50 according to the present embodiment, for example, a laminated body in which a display panel and a housing are joined by an adhesive sheet, or a lens (protective cover) and a casing, which are used in an electronic device, are made of an adhesive sheet. The laminated body etc. which were joined are mentioned.

(II) Manufacturing method of laminated body An example of the manufacturing method of the laminated body mentioned above is demonstrated below. The manufacturing method according to the present embodiment includes a first sticking step, an injection step, and a second sticking step. Hereinafter, each step will be described.

(First sticking process)
A 1st sticking process is a process of arrange | positioning and sticking a some double-sided adhesive sheet to a 1st to-be-adhered body so that some of these side surfaces may mutually adjoin. In other words, the first sticking step is a step of sticking the first adhesive surfaces of the plurality of double-sided adhesive sheets to the first adherend. In this step, among the plurality of double-sided pressure-sensitive adhesive sheets, the plurality of double-sided pressure-sensitive adhesive sheets are arranged such that a part of the side surface of one double-sided pressure-sensitive adhesive sheet and a part of the side surface of the other double-sided pressure-sensitive adhesive sheet are close to each other. Deploy. Thereby, a double-sided pressure-sensitive adhesive sheet layer is formed on the first adherend.

  The plurality of double-sided pressure-sensitive adhesive sheets to be attached can be produced by forming a sheet-like double-sided pressure-sensitive adhesive sheet into a predetermined shape by punching or the like. In this embodiment, since a plurality of double-sided pressure-sensitive adhesive sheets are used, there is no need to process the double-sided pressure-sensitive adhesive sheet into one complicated shape. Therefore, the double-sided pressure-sensitive adhesive sheet to be discarded is reduced and the double-sided pressure-sensitive adhesive sheet can be used efficiently.

(Injection process)
An injection | pouring process is a process of inject | pouring an adhesive agent to the area | region where the part of the side surface of the said some double-sided adhesive sheet adjoins. In other words, the injection step may be a sealing step in which an adhesive is applied (typically injection) to the adjacent region of two double-sided pressure-sensitive adhesive sheets in which part of the side surfaces are close to each other to seal the adjacent region. . Specifically, the injection is a step of applying an adhesive to the adjacent region and sealing a gap in the region where the plurality of double-sided PSA sheets are close to each other. Here, when the notch part 38 as described above is provided, an adhesive is injected into the notch part 38 to fill a gap in the region where the plurality of double-sided PSA sheets are close to each other.

  In addition, when using three or more said double-sided adhesive sheets, you may perform an injection | pouring process after sticking all the three double-sided adhesive sheets. Alternatively, an injection process is performed on one area where a part of the side surfaces formed after two double-sided pressure-sensitive adhesive sheets are pasted, and then the remaining one double-sided pressure-sensitive adhesive sheet is pasted and formed thereby The injection process may be performed again on the region where the side surfaces are close to each other.

  The injection of the adhesive can be appropriately performed by a known method, for example, using a needle-like nozzle. After injecting the adhesive, the adhesive is cured by performing operations such as heating, ultraviolet irradiation, and drying according to the type of adhesive used, and the gaps in the area where the multiple double-sided PSA sheets are close are sealed. The Such an adhesive hardening process may be performed after an injection | pouring process, and may be performed after the below-mentioned 2nd sticking process.

(Second sticking process)
A 2nd sticking process is a process of sticking a 2nd to-be-adhered body to the surface on the opposite side to the surface which touches the 1st to-be-adhered body in the said double-sided adhesive sheet. In other words, the second sticking step is a step of sticking the second adherend to the second pressure-sensitive adhesive surface of the double-sided pressure-sensitive adhesive sheet (the pressure-sensitive adhesive surface located on the side opposite to the first pressure-sensitive adhesive surface). The application conditions such as the load applied at the time of application can be appropriately adjusted.

  As described above, matters disclosed by this specification include the following inventions.

(1) a first pasting step in which a plurality of double-sided pressure-sensitive adhesive sheets are disposed and pasted on a first adherend so that some of these side surfaces are close to each other;
Applying an adhesive to a region where a part of these side surfaces of the plurality of double-sided pressure-sensitive adhesive sheets are close to each other, and injecting the adhesive into a gap in the region; and
In the double-sided pressure-sensitive adhesive sheet, a second pasting step of pasting the second adherend on the surface opposite to the surface on which the first adherend is pasted,
The manufacturing method of the laminated body containing this.
The manufacturing method (1) can be rephrased as follows. That is, a first sticking step of sticking each first pressure-sensitive adhesive surface of each of the plurality of double-sided pressure-sensitive adhesive sheets to a first adherend, wherein the first sticking step is one of the plurality of double-sided pressure-sensitive adhesive sheets. Arranging the plurality of double-sided pressure-sensitive adhesive sheets such that a part of the side surface of the pressure-sensitive adhesive sheet and a part of the side surface of the other double-sided pressure-sensitive adhesive sheet are close to each other;
A sealing step of applying an adhesive to a proximity region of two double-sided pressure-sensitive adhesive sheets in which a part of the side surfaces are close to each other to seal the proximity region;
A second attaching step of attaching a second adherend to each second adhesive surface of each of the plurality of double-sided adhesive sheets, wherein the second adhesive surface is a surface located on the opposite side of the first adhesive surface; If there;
The manufacturing method of the laminated body containing this.

  (2) The manufacturing method according to (1), wherein the plurality of double-sided PSA sheets are arranged in a frame shape.

  (3) The manufacturing method according to (1) or (2), wherein at least one of the first adherend and the second adherend is an electronic device component.

(4) At least one of the plurality of double-sided pressure-sensitive adhesive sheets is cut to a side surface located in a region where the plurality of double-sided pressure-sensitive adhesive sheets are close to each other (a region where a part of side surfaces of the plurality of double-sided pressure-sensitive adhesive sheets are close to each other). With a notch,
The manufacturing method according to any one of (1) to (3), wherein an adhesive is injected into the notch in the injection step (sealing step).

  (5) The manufacturing method according to (4), wherein the notch penetrates in the thickness direction of the double-sided pressure-sensitive adhesive sheet.

  (6) The production method according to any one of (1) to (5), wherein the double-sided pressure-sensitive adhesive sheet is a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer on both sides of a substrate.

  (7) A laminate obtained by the production method according to any one of (1) to (6).

(8) The first adherend and the second adherend are laminated via a double-sided pressure-sensitive adhesive sheet layer,
The double-sided pressure-sensitive adhesive sheet layer is affixed by arranging a plurality of double-sided pressure-sensitive adhesive sheets so that part of their side faces are close to each other,
The laminated body by which the area | region (proximal area | region) where some of these side surfaces adjoin each other of the said several double-sided adhesive sheet was sealed with the adhesive agent.
The laminate (8) can also be rephrased as follows. That is, the first adherend and the second adherend are laminated via a double-sided adhesive sheet layer,
The double-sided pressure-sensitive adhesive layer includes a plurality of double-sided pressure-sensitive adhesive sheets such that a part of a side surface of one double-sided pressure-sensitive adhesive sheet and a part of a side surface of another double-sided pressure-sensitive adhesive sheet are close to each other. Is formed by placing
A laminated body in which adjacent regions of two double-sided pressure-sensitive adhesive sheets in which part of the side surfaces are close to each other are sealed with an adhesive.

  (9) The laminate according to (8), wherein the plurality of double-sided PSA sheets are arranged in a frame shape.

  (10) The laminate according to (9), wherein a width of the double-sided pressure-sensitive adhesive sheet is 0.1 mm to 50 mm.

  (11) The laminate according to (8) or (9), wherein the first adherend and the second adherend are electronic device parts.

(12) At least one of the plurality of double-sided pressure-sensitive adhesive sheets includes a notch on a side surface located in a region where the plurality of double-sided pressure-sensitive adhesive sheets are close to each other,
The laminate according to any one of (8) to (11), wherein the notch is sealed with the adhesive.
The laminate of (12) can be paraphrased as follows. That is, one double-sided pressure-sensitive adhesive sheet (at least one double-sided pressure-sensitive adhesive sheet) of the plurality of double-sided pressure-sensitive adhesive sheets is a side surface located in a region adjacent to the other double-sided pressure-sensitive adhesive sheet or the vicinity thereof. With a notch,
The laminate according to any one of (8) to (11), wherein the notch is sealed with the adhesive.

  (13) The laminate according to (12), wherein the notch penetrates in the thickness direction of the double-sided pressure-sensitive adhesive sheet.

  (14) The laminate according to any one of (8) to (13), wherein the double-sided PSA sheet is a PSA sheet having a PSA layer on both sides of a substrate.

  (15) A pressure-sensitive adhesive sheet having pressure-sensitive adhesive surfaces on both sides and having a notch on the side surface.

  (16) The pressure-sensitive adhesive sheet according to (15), wherein the cutout portion penetrates in the thickness direction.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and can be obtained by appropriately combining technical means disclosed in each embodiment. Embodiments are also included in the technical scope of the present invention.

  Since the adhesive sheet can be used efficiently without deteriorating the sealing performance, the method for producing a laminate according to the present invention can be suitably used for various laminates attached with an adhesive sheet.

DESCRIPTION OF SYMBOLS 10 1st to-be-adhered body 20 2nd to-be-adhered body 30 Double-sided adhesive sheet 30A Area | region 35 a some double-sided adhesive sheet adjoins Adhesive 38 Notch 50 Laminated body 100 Double-sided adhesive sheet 110 Double-sided adhesive sheet 120 Joining area | region

Claims (16)

A first attaching step of attaching and attaching a plurality of double-sided pressure-sensitive adhesive sheets to the first adherend so that some of these side faces are close to each other;
Applying an adhesive to a region where a part of these side surfaces of the plurality of double-sided pressure-sensitive adhesive sheets are close to each other, and injecting the adhesive into a gap in the region; and
In the double-sided pressure-sensitive adhesive sheet, a second pasting step of pasting the second adherend on the surface opposite to the surface on which the first adherend is pasted,
The manufacturing method of the laminated body containing this.   The manufacturing method according to claim 1, wherein the plurality of double-sided PSA sheets are arranged in a frame shape.   The manufacturing method according to claim 1 or 2, wherein at least one of the first adherend and the second adherend is an electronic device component. At least one of the plurality of double-sided pressure-sensitive adhesive sheets includes a notch on a side surface located in a region where the plurality of double-sided pressure-sensitive adhesive sheets are close to each other,
The manufacturing method as described in any one of Claims 1-3 which inject | pours an adhesive agent into the said notch part in the said injection | pouring process.   The manufacturing method of Claim 4 with which the said notch penetrates in the thickness direction of the said double-sided adhesive sheet.   The manufacturing method as described in any one of Claims 1-5 whose said double-sided adhesive sheet is an adhesive sheet provided with the adhesive layer on both surfaces of the base material.   The laminated body obtained with the manufacturing method as described in any one of Claims 1-6. The first adherend and the second adherend are laminated via a double-sided adhesive sheet layer,
The double-sided pressure-sensitive adhesive sheet layer is affixed by arranging a plurality of double-sided pressure-sensitive adhesive sheets so that part of their side faces are close to each other,
The laminated body by which the area | region where some of these side surfaces adjoin each other of the said several double-sided adhesive sheet was sealed with the adhesive agent.   The laminate according to claim 8, wherein the plurality of double-sided pressure-sensitive adhesive sheets are arranged in a frame shape.   The laminated body of Claim 9 whose width | variety of the said double-sided adhesive sheet is 0.1 mm-50 mm.   The laminate according to claim 8 or 9, wherein the first adherend and the second adherend are electronic device components. At least one of the plurality of double-sided pressure-sensitive adhesive sheets includes a notch on a side surface located in a region where the plurality of double-sided pressure-sensitive adhesive sheets are close to each other,
The laminate according to any one of claims 8 to 11, wherein the notch is sealed with the adhesive.   The laminate according to claim 12, wherein the notch penetrates in a thickness direction of the double-sided pressure-sensitive adhesive sheet.   The laminated body as described in any one of Claims 8-13 whose said double-sided adhesive sheet is an adhesive sheet provided with the adhesive layer on both surfaces of the base material.   A pressure-sensitive adhesive sheet having a pressure-sensitive adhesive surface on both sides and a cut-out portion on a side surface.   The pressure-sensitive adhesive sheet according to claim 15, wherein the notch penetrates in the thickness direction.

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