Processs for producing pressure-sensitive adhesive tape

Details Processs for producing pressure-sensitive adhesive tape Processs for producing pressure-sensitive adhesive tape

1991-11-22

1992-09-08

Pianalto, Bernard

Coating processes

With stretching or tensioning

427173, 427177, 427208, 4272088, 427316, 427322, 427346, 4273855, 427400, 4274123, 4274125, B05D 312

Patent

active

051457180

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-adhesive 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-adhesive 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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