Heat-activated adhesive sheet

Details Heat-activated adhesive sheet Heat-activated adhesive sheet

2007-12-27

2011-12-13

Nordmeyer, Patricia (Department: 1788)

Stock material or miscellaneous articles

Layer or component removable to expose adhesive

C428S041300, C428S041400, C428S041500, C428S346000, C428S3550RA

Reexamination Certificate

active

08075970

ABSTRACT:
Disclosed is a heat-activated adhesive sheet which includes a heat-activated adhesive layer, and two release liners arranged so as to sandwich and protect the heat-activated adhesive layer. One of the two release liners is a release liner containing a polyolefinic film as a base material, and the other is a release liner containing a polyester film as a base material. This heat-activated adhesive sheet has a transfer heat-activated adhesive layer, can thereby have a small thickness, is unlikely to suffer from “unintended separation”, and is unlikely to cause lifting and delamination of release liners when the sheet is stored as a roll.

REFERENCES:
patent: 5275856 (1994-01-01), Calhoun et al.
patent: 6506489 (2003-01-01), Ohura et al.
patent: 2005/0266195 (2005-12-01), Nonaka et al.
patent: 1595927 (2005-11-01), None
patent: 05-179218 (1993-07-01), None
Machine translation of JP 05-179218, including Derwent Abstract, claims and detailed description, published Jul. 20, 1993.
European Search Report dated Sep. 9, 2010, for European Patent Application No. 08000234.8.

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