Polyimide and fluoropolymer containing films and laminates

Details Polyimide and fluoropolymer containing films and laminates Polyimide and fluoropolymer containing films and laminates

1992-01-31

1993-08-24

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Composite

Of fluorinated addition polymer from unsaturated monomers

428422, 428458, 428463, 4284735, B32B 2706

Patent

active

052387488

ABSTRACT:
A multi-layer film of improved adhesive strength and other properties is made by combining a layer of polyimide and one or more layers of fluoropolymer selected from the group consisting of PTFE, thermally compatible TFE copolymers, blends thereof, PVF.sub.2, thermally compatible VF.sub.2 copolymers, blends thereof, PCTFE, thermally compatible CTFE copolymers, and blends thereof. It has been found that the peel adhesion between the polyimide layer and any fluoropolymer layer is greatly improved over known products. Laminated composites of improved adhesion and cohesion are made using such a multi-layer film and at least one fluoropolymer film. The fluoropolymer film is thermally weldable to the polyimide film.

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