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Title:
DOUBLE-SIDED ADHESIVE TAPE OR SHEET, AND ADHEREND PROCESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2012/099121
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a double-sided adhesive tape or sheet: that can effectively maintain a state of being fixed to a pedestal; that can easily be peeled from the pedestal without damaging the adherend; and that enables a processed product to be peeled using heat. Provided is a double-sided adhesive tape or sheet having a thermally-removable adhesive layer containing thermally-expandable microspheres on one side of a substrate, and having an adhesive layer for temporary attachment on the other side of the substrate. The shear adhesive strength of the adhesive layer for temporary attachment is not less than 2.0 N/200 mm2, and the tensile adhesive strength is 0.01 to 2.0 N/20 mm width. The adhesive layer for temporary attachment is cross linked by an isocyanate or epoxy cross-linking agent. The adhesive layer for temporary attachment preferably has the characteristic of a gel fraction of not less than 80 wt%.

Inventors:
ARIMITSU YUKIO
Application Number:
PCT/JP2012/050856
Publication Date:
July 26, 2012
Filing Date:
January 17, 2012
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
ARIMITSU YUKIO
International Classes:
C09J7/38; C09J201/00
Domestic Patent References:
WO2008133120A12008-11-06
Foreign References:
JP2008195927A2008-08-28
JPS5013878Y11975-04-28
JPS5124534B11976-07-24
JPS5661468A1981-05-26
JPS5661469A1981-05-26
JPS60252681A1985-12-13
JPS61174857A1986-08-06
JPS6317981A1988-01-25
JPS5613040A1981-02-07
Attorney, Agent or Firm:
HASHIMOTO Kimihide et al. (JP)
Kimihide Hashimoto (JP)
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