Aromatic polyimide film laminated with metal foil

Details Aromatic polyimide film laminated with metal foil Aromatic polyimide film laminated with metal foil

1991-05-30

1993-11-16

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

15624424, 156249, 428216, 428458, 4284735, B32B 702, B32B 1508, B29C 4700

Patent

active

052622274

ABSTRACT:
An aromatic polyimide film directly laminated with a metal foil and an aromatic polyimide film directly laminated on both sides with a metal foil wherein the polyimide film (substrate) comprises an aromatic polyimide layer-A of 6-200 .mu.m thick whose polyimide is derived from a biphenyltetracarboxylic acid or its derivative and a phenylenediamine and an aromatic polyimide layer-B of 0.2-15 .mu.m thick whose polyimide is derived from an aromatic tetracarboxylic acid or its derivative and an aromatic diamine having plural benzene rings, and the polyimide layer-A has a thickness of not less than 55% of the total thickness of the aromatic polyimide substrate film, the polyimide layer-B is fixed to the polyimide layer-A under the condition that the layer-B cannot be peeled from the layer-A along the interface between these layers-A and -B and the metal foil is directly fixed on the surface of the polyimide layer-B via no adhesive.

REFERENCES:
patent: 4788098 (1988-11-01), Sado et al.
patent: 4931365 (1990-06-01), Inoue et al.

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