DOUBLE-FACED PRESSURE-SENSITIVE ADHESIVE TAPE OR SHEET AND ROLL OF CONTINUOUS STRIP

Title:

DOUBLE-FACED PRESSURE-SENSITIVE ADHESIVE TAPE OR SHEET AND ROLL OF CONTINUOUS STRIP

Document Type and Number:

WIPO Patent Application WO/2008/018504

Kind Code:

A1

Abstract:

A double-faced pressure-sensitive adhesive type or sheet characterized in that it comprises a substrate and pressure-sensitive adhesive layers formed respectively on both sides thereof, the thickness extending from the surface of one of the pressure-sensitive adhesive layers to that of the other is 25 µm or less, the two pressure-sensitive adhesive layers differ in tackiness, and the lower-tackiness pressure-sensitive adhesive layer has a tack, as measured by the inclination ball tack testing method (inclination angle, 30°; 23°C; 65 %RH) as provided for in JIS Z 0237, of a ball number 3 or higher. The substrate has a thickness of preferably 10 µm or smaller, especially 3 µm or smaller.The thickness of each pressure-sensitive adhesive layer is preferably 6 µm or smaller. The double-faced pressure-sensitive adhesive type or sheet is thin and can be tenaciously bonded when applied. It can be easily separated from one of the adherends when stripped off.

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Inventors:

TAMAI HIRONORI (JP)
SOEDA YOSHIKAZU (JP)

Application Number:

PCT/JP2007/065524

Publication Date:

February 14, 2008

Filing Date:

August 08, 2007

Export Citation:

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Assignee:

NITTO DENKO CORP (JP)
TAMAI HIRONORI (JP)
SOEDA YOSHIKAZU (JP)

International Classes:

B32B27/00; B65H19/28; B65H75/28; C09J7/38

Foreign References:

JPH0873084A	1996-03-19
JPH076252U	1995-01-27
JPH0625269U	1994-04-05
JPH05320592A	1993-12-03
JPS63235242A	1988-09-30
JP2006044838A	2006-02-16
JP2000309472A	2000-11-07
JP2000177893A	2000-06-27
JPS62108378U	1987-07-10
JPH076252U	1995-01-27
JP2007009137A	2007-01-18

Other References: