Sheet adhesive and adhesion process using the same

Patent metadata

Field	Value
Publication number	US-10633512-B2
Application number	US-201715603860-A
Country	US
Kind code	B2
Filing date	May 24, 2017
Priority date	Jun 1, 2016
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

It has conventionally been difficult to achieve a sheet adhesive which adheres in a low temperature (from 20 to 90° C.), and has both of softness and high adhering strength. The present invention realizes a sheet adhesive capable of adhering in a low temperature (from 20 to 90° C.) which exhibits a high adhesiveness in spite of being a soft sheet of thin film, by forming a simulated multiple layer by using an elastomer as a substrate layer, and by forming a reactive layer by means of spraying or application.
A sheet adhesive including a substrate layer and a reactive layer, wherein the substrate layer includes a component (A) and a component (B) below, and the reactive layer is formed with a liquid agent including a component (C) below in an amount of from 0.01% by mass to 45% by mass,
component (A): a urethane elastomer, component (B): an epoxy resin, component (C): an amine compound and/or phenol compound.

First claim

What is claimed is:

1. A sheet adhesive comprising a substrate layer and a reactive layer, wherein
the substrate layer comprises a component (A) and a component (B) below, and
the reactive layer is formed with a liquid agent comprising a component (C) below in an amount of from 0.01% by mass to 45% by mass, where said component (C) of said reactive layer is able to react with said component (B),
component (A): a urethane elastomer,
component (B): an epoxy resin,
component (C): an amine compound and/or phenol compound.

2. The sheet adhesive according to claim 1 , wherein the epoxy resin is a solid at 25° C.

3. The sheet adhesive according to claim 1 , wherein the substrate layer is a substrate layer formed with the component (A) and the component (B) in a state compatibilized with each other.

4. The sheet adhesive according to claim 1 , wherein the liquid agent further comprises a coupling agent as a component (E).

5. A thermal curing-type sheet adhesive which comprises the sheet adhesive according to claim 1 .

6. A normal temperature curing-type sheet adhesive which comprises the sheet adhesive according to claim 1 .

7. The sheet adhesive according to claim 1 , where said liquid agent for forming said reactive layer further comprises a solvent (D).

8. The sheet adhesive according to claim 1 , wherein said substrate layer is supported by a first adherend, and said reactive layer is supported by a second adherend.

Assignees

• Three Bond Co Ltd

Inventors

• Kimura Hiroshi
• Arai Yoshihide

Classifications

• C09J175/06

  from polyesters · CPC title

• C08G59/62

  Alcohols or phenols · CPC title

• C08G59/504

  containing an atom other than nitrogen belonging to the amine group, carbon and hydrogen · CPC title

• C09J175/04

  Polyurethanes · CPC title

• C09J11/06

  organic · CPC title