Stock material or miscellaneous articles – Composite – Of fluorinated addition polymer from unsaturated monomers
Patent
1992-10-08
1994-01-04
Buffalow, Edith
Stock material or miscellaneous articles
Composite
Of fluorinated addition polymer from unsaturated monomers
428461, 428487, 428511, 428910, 428516, B32B 2700
Patent
active
052758869
ABSTRACT:
A thermoplastic film structure comprising a base layer of a thermoplastic resin which comprises polypropylene and a coating layer of a polyvinylidene fluoride is disclosed. The film is characterized by reduced coefficient of friction, improved anti-blocking characteristics, and enhanced oxygen and water vapor barrier properties. The disclosure also provides a process for making the film in which the polypropylene-containing thermoplastic resin is extruded into a sheet, said sheet oriented in the longitudinal direction to form a monoaxially oriented film, said film coated with the polyvinylidene fluoride and said coated film oriented in the transverse direction.
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Allowed Mobil applications Ser. No. 07/772,646, filed Oct. 9, 1991, and Ser. No. 07/676,020, filed Mar. 27, 1991, and copending application Ser. No. 813,168, filed Dec. 24, 1991.
Chu Shaw-Chang
Kirk Kevin A.
Buffalow Edith
Keen Malcolm D.
McKillop Alexander J.
Mobil Oil Corporation
Schneller Marina V.
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