# US 2010/0167030 A1 · Adhesive tape and adhesive tape roll

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- Number: US 2010/0167030 A1
- Document ID: US20100167030A1
- Status: Published application
- Kind: A1
- Application number: 12/447,927
- Filed: 2007-10-29
- Published: 2010-07-01
- Earliest claimed: 2006-10-31
- Assignees: Hitachi Chemical Company, Ltd.
- Inventors: Toshiyuki Yanagawa; Kazuyuki Watanabe
- Web page: https://patentgrep.com/patent/US20100167030A1

## CPC

- C09J 7/20: characterised by their carriers
- C09J 2301/204: the adhesive coating being discontinuous
- Y10T 428/24942: including components having same physical characteristic in differing degree
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The invention provides an adhesive tape comprising a tape-like support base and a tape-like adhesive layer, wherein the adhesive layer is formed on the main side of the support base and the width of the support base is longer than the width of the adhesive layer. According to the invention, seepage of adhesive components in the adhesive layer of the adhesive tape in the widthwise direction from the sides of the support base can be reduced compared to the prior art.

## Claims

### Claim 1

An adhesive tape comprising a tape-like support base and a tape-like adhesive layer,
the adhesive layer being formed on the main side of the support base, and
the width of the support base being longer than the width of the adhesive layer.

### Claim 2

An adhesive tape comprising
a tape-like support base having a first main side and a second main side opposite the first main side, and
a tape-like adhesive layer having a third main side and a fourth main side opposite the third main side,
the adhesive layer being provided on the support base in such a manner that the second main side and third main side are in contact,
the width of the support base being longer than the width of the adhesive layer, and
the widths of the first, second, third and fourth main sides satisfying the condition represented by the following inequality (1).
a>a′≧b>b′ (1)
(In inequality (1), a represents the width of the first main side, a′ represents the width of the second main side, b represents the width of the third main side and b′ represents the width of the fourth main side.)

### Claim 3 (depends on 1)

An adhesive tape according to claim 1, the adhesive layer containing dispersed conductive particles.

### Claim 4 (depends on 1)

An adhesive tape roll obtained by winding an adhesive tape according to claim 1 around itself.