Method of releasably securing the end of a roll of material
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United States of America Patent
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-
Dec 30, 1997
Grant Date -
N/A
app pub date -
Sep 19, 1996
filing date -
Sep 20, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cleavable release structure composed of two release bases each having an outer surface and an inner surface; a release coating on the inner surface of each release base; a layer of a pressure sensitive adhesive adjacent the coating on the inner surface of each release base; and a clearable layer sandwiched between the pressure sensitive adhesive layers, so that the cleavable layer is adapted to cleave and separate when subjected to a peeling force greater than its internal bond strength and less than the adhesion force of the pressure sensitive adhesive. Each layer of pressure sensitive adhesive should be adapted to provide an adhesion force greater than about 24 ounces per inch of width. The release coating should be adapted to provide a release level of from about 1 to about 30 grams per centimeter of width. The clearable layer should have an internal bond strength of from about 2 to about 20 ounces per inch of width.
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