Self-rolling laminated sheet and self-rolling...

Details Self-rolling laminated sheet and self-rolling... Self-rolling laminated sheet and self-rolling...

2011-03-22

2011-03-22

Shosho, Callie E (Department: 1788)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

C428S343000, C428S352000, C428S034900, C428S040100, C428S041700, C428S906000

Reexamination Certificate

active

07910206

ABSTRACT:
The present invention relates to a self-rolling pressure-sensitive adhesive sheet, including a shrinkable film layer; a restriction layer disposed on a side of the shrinkable film layer; and a pressure-sensitive adhesive layer disposed on the side of the restriction layer which is opposite to the side on which the shrinkable film layer is disposed. The self-rolling pressure-sensitive adhesive sheet is a releasable pressure-sensitive adhesive sheet, in which the pressure-sensitive adhesive layer or the pressure-sensitive adhesive layer after an adhesiveness decreasing treatment has a pressure-sensitive adhesive power (180° C. peeling, against a silicon mirror wafer, tensile speed: 300 mm/min) of 6.5 N/10 mm or less, and in which the self-rolling pressure-sensitive adhesive sheet rolls up in one direction from an end to form one tubular roll or rolls up from two opposing ends toward a center of the two opposing ends to form two tubular rolls, when the self-rolling pressure-sensitive sheet is stimulated to induce the contraction of the shrinkable film layer.

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Noguchi Isato et al., “Semiconductor Wafer Protective Pressure-Sensitive-Adhesive Sheet and Use Thereof”, Machine translation of JP 2000-129227, May 9, 2000.
Extended European Search Report Dated Feb. 25, 2008.
Communication from European Patent Office dated Jun. 22, 2009.

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