Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1991-10-09
1993-01-26
Sluby, P. C.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428461, 428513, 428516, 428910, 427173, 427322, 427533, 264134, 264241, 2642893, B32B 516, B32B 2708, D02J 122
Patent
active
051821680
ABSTRACT:
A thermoplastic film comprising a base layer of a thermoplastic resin which comprises polypropylene and a coating layer of an alkali metal salt of an alkyl sulfate is disclosed. The film is characterized by reduced COF and improved anti-blocking characteristics without the attendant problems associated with decreased clarity, adhesion and wettability common to films treated to improve their COF and anti-blocking characteristics. The disclosure also provides a process for making the film in which the polypropylene-coating thermoplastic resin is extruded into a sheet, said sheet oriented in the longitudinal direction to form a monoxially oriented film, said film coated with the alkali metal salt of an alkyl sulfate and said coated film oriented in the transverse direction.
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Database WPI, Derwent Publications, London, GB AN=80-19118C(11) Abstract & Jp-55.014223 (Sumitomo Chemical KK).
Chu Shaw-Chang
Kirk Kevin A.
Keen Malcolm D.
McKillop Alexander J.
Mobil Oil Corporation
Schneller Marina V.
Sluby P. C.
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