Double-Sided Adhesive Sheet, Joining Method Using Double-Sided Adhesive Sheet, And Method For Producing Double-Sided Adhesive Sheet

• US 20170081559A1
• Filed: 12/06/2016
• Published: 03/23/2017
• Est. Priority Date: 07/24/2014
• Status: Abandoned Application

• Current Assignee: Nissho Corporation (Nitto Denko Corporation), Nitto Denko Corporation
• Original Assignee: Nissho Corporation (Nitto Denko Corporation), Nitto Denko Corporation
• Inventors: Nakahara, Hiroki, Soeda, Yoshikazu
• Application Number:
  US15/370,830
• Publication Number:
  US 20170081559A1
• Time in Patent Office: Days
• CPC Class Codes: B32B 1/00 Layered products having a non-planar shape
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: B32B 15/20 comprising aluminium or copper B32B15/016 and B32B15/017 take precedence
• CPC Class Codes: B32B 2250/40 Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
• CPC Class Codes: B32B 2255/10 on synthetic resin layer or on natural or synthetic rubber layer
• CPC Class Codes: B32B 2255/26 Polymeric coating
• CPC Class Codes: B32B 2260/02 Composition of the impregnated, bonded or embedded layer
• CPC Class Codes: B32B 2307/732 Dimensional properties
• CPC Class Codes: B32B 2307/748 Releasability
• CPC Class Codes: B32B 2405/00 Adhesive articles, e.g. adhesive tapes labels B32B2519/00
• CPC Class Codes: B32B 27/00 Layered products comprising a layer of synthetic resin fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18
• CPC Class Codes: B32B 27/065 of foam
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/30 comprising vinyl (co)polymers; comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/304 comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/34 comprising polyamides
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B32B 27/38 comprising epoxy resins
• CPC Class Codes: B32B 27/40 : comprising polyurethanes
• CPC Class Codes: B32B 29/002 : as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a layer of a particular substance B32B9/06; next to a bituminous or tarry layer B32B11/06; next to a water-setting substance layer B32B13/08; next to a metal layer B32B15/12; next to a glass layer B32B17/065; next to a layer formed of natural mineral fibres or particles B32B19/046; next to a wood layer B32B21/06; next to a cellulosic plastic layer B32B23/06; next to a natural or synthetic rubber layer B32B25/06; next to a synthetic resin layer B32B27/10
• CPC Class Codes: B32B 37/12 : characterised by using adhesives
• CPC Class Codes: B32B 37/18 : involving the assembly of discrete sheets or panels only
• CPC Class Codes: B32B 38/10 : Removing layers, or parts of layers, mechanically or chemically
• CPC Class Codes: B32B 5/024 : Woven fabric
• CPC Class Codes: B32B 5/18 : characterised by features of a layer of foamed material
• CPC Class Codes: B32B 7/06 : permitting easy separation
• CPC Class Codes: B32B 7/12 : using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: C09J 133/08 : Homopolymers or copolymers of acrylic acid esters
• CPC Class Codes: C09J 201/00 : Adhesives based on unspecified macromolecular compounds
• CPC Class Codes: C09J 2301/124 : the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
• CPC Class Codes: C09J 5/00 : Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
• CPC Class Codes: C09J 7/10 : without carriers
• CPC Class Codes: C09J 7/20 : characterised by their carriers

Abstract

A double-sided adhesive tape has an adhesive member which is formed in the shape of a film and whose both surfaces in a thickness direction have an adhesive force and a pair of separation films which are arranged so as to sandwich the adhesive member in the thickness direction. The double-sided adhesive tape is formed so as to have a non-planar shape and to reduce the occurrence of wrinkles in the adhesive member when the adhesive member is adhered to a non-planar adherend.

Claims

1. A double-sided adhesive sheet including:

an adhesive member which is kneaded with at least an adhesive agent,

wherein the double-sided adhesive sheet is formed so as to have a non-planar shape.

2. A double-sided adhesive sheet including:

an adhesive member which is formed in a shape of a film and whose both surfaces in a thickness direction have an adhesive force; and

a pair of separation films which are arranged so as to sandwich the adhesive member in the thickness direction,

wherein the double-sided adhesive sheet is formed so as to have a non-planar shape.

3. The double-sided adhesive sheet according to claim 2,

characterized in that a separation force for separating, from the adhesive member, a separation film which is arranged on one surface of the adhesive member in the thickness direction differs from a separation force for separating, from the adhesive member, a separation film which is arranged on the other surface of the adhesive member in the thickness direction.

4. The double-sided adhesive sheet according to claim 3,

characterized in that each of the pair of separation films contains a thermoplastic polymer.

5. The double-sided adhesive sheet according to claim 2,

characterized in that the adhesive member comprises:

a base member which is formed in a shape of a film; and

a pair of adhesive agent layers which are arranged so as to sandwich the base member in the thickness direction.

6. The double-sided adhesive sheet according to claim 2,

characterized in that the adhesive member is made only of an adhesive agent layer which is formed in a shape of a film.

7. A joining method using a double-sided adhesive sheet,

characterized in that the joining method comprises:

a step of providing a first adherend which has a non-planar shape;

a step of preparing the double-sided adhesive sheet according to claim 2, the non-planar shape of the double-sided adhesive sheet conforming to the non-planar shape of the first adherend;

a step of separating one separation film of the pair of separation films from the adhesive member and sticking the exposed adhesive member to the non-planar shape of the first adherend; and

a step of separating the other separation film of the pair of separation films from the adhesive member and affixing a second adherend to the exposed adhesive member.

8. A method for producing a double-sided adhesive sheet, comprising:

a step of preparing a processing sheet that includes;

an adhesive member which is formed in a shape of a film and whose both surfaces in a thickness direction have an adhesive force; and

a pair of separation films which are arranged so as to sandwich the adhesive member in the thickness direction;

a step of forming a non-planar shape by heating and pressurizing at least part of the processing sheet; and

a step of cooling the processing sheet having the non-planar shape while maintaining a pressurized state.

9. The method for producing a double-sided adhesive sheet according to claim 8,

characterized in that each of the pair of separation films contains a thermoplastic polymer,

in the step of heating and pressurizing the processing sheet, the processing sheet is heated to a softening temperature or more of the thermoplastic polymer and

in the step of cooling the processing sheet while maintaining the pressurized state, the processing sheet is cooled below the softening temperature of the thermoplastic polymer.