Method for preparing tape having improved tear strength
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United States of America Patent
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Sep 8, 1992
Issued Date -
N/A
app pub date -
May 31, 1991
filing date -
Aug 1, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Method for preparing a tape having a backing bearing on at least one major surface thereof a plurality of ribs disposed substantially longitudinally thereon, and further bearing on at least one major surface thereof a layer of adhesive. The ribs are joined to the backing such that there exists a notch-like separation between each end of the rib and the surface of the backing. No more than 50% of the cross-section of the ribs should project from the rib-bearing surface of the tape. It is preferred that the adhesive be a pressure-sensitive adhesive. The tape of this invention can be prepared by means of coextrusion techniques.
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