Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Patent
1991-03-26
1996-05-21
Davis, Jenna L.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
428352, 428353, 428354, C09J 702
Patent
active
055188117
ABSTRACT:
A tape comprising a biaxially-oriented backing made from a polymeric film bearing on one major surface thereof a layer of pressure-sensitive adhesive and on the other major surface thereof a layer of low-adhesion backsize composition. The backing and the layer of pressure-sensitive adhesive intermix so as to form a commingled layer between them. This invention also provides a process of preparing pressure-sensitive adhesive tape comprising the steps of (1) providing an extruded polymeric film backing, (2) orienting said backing in the machine direction, (3) applying a low-adhesion backsize layer to one major surface of said backing, (4) applying a pressure-sensitive adhesive layer to the major surface of said backing not bearing the low-adhesion backsize layer, (5) orienting the layer-bearing backing in the transverse direction by heating and cross-stretching the layer-bearing backing, (6) winding the machine direction oriented, transverse direction oriented, layer-bearing backing onto a roll, and (7) optionally, converting the machine direction oriented, transverse direction oriented, layer-bearing backing to form a tape.
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PCT Search Report.
Birkholz Ronald B.
Pedginski James J.
Davis Jenna L.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
O'Shaughnessy Christine T.
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