Textured polyimide film

Details Textured polyimide film Textured polyimide film

1987-10-22

1991-05-14

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428158, 4284735, B32B 326, B32B 1508, B32B 2700

Patent

active

050155172

ABSTRACT:
One or both surfaces of a polyimide sheet are uniformly and completely textured and can be coated with a layer of electroless nickel or cobalt and a subsequent layer of electrolytically applied copper yielding an adhesiveless laminate useful in the production of electronic circuitry. The copper and nickel or cobalt layers can be strongly bonded to the textured polyimide sheet to the extent that the laminate exceeds bond strength requirements as measured by current standard peel strength tests of the Institute for Interconnecting and Packaging Electronic Circuits (IPC) for both initial and post solder float adhesion.

REFERENCES:
patent: 4634631 (1987-01-01), Gazit et al.
patent: 4686147 (1987-08-01), Matsuyama et al.
patent: 4725504 (1988-02-01), Knudsen et al.

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