Polyimide film and its manufacturing method

Details Polyimide film and its manufacturing method Polyimide film and its manufacturing method

1987-08-21

1989-02-28

Foelak, Morton

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

4284735, 528183, 528188, B32B 700

Patent

active

048084689

ABSTRACT:
The present invention provides a polyimide film whose residual content of volatiles is reduced to not more than 0.45 weight % on the basis of the film, and further a polyimide film whose residual content of volatiles is reduced to not more than 0.45 weight % on the basis of the film and whose oxygen/carbon ratio in the surface layer is increased by 0.01-0.1, and manufacturing methods therefor.
According to the present invention, it is possible to provide a polyimide film improved in adhesion performance in a stable and homogeneous manner, and this improvement of adhesion performance is attainable in the film-forming process, not in a separate process of after-treatment.

REFERENCES:
patent: 4753842 (1988-06-01), Okumura et al.
patent: 4761327 (1988-08-01), Hamano et al.
patent: 4761328 (1988-08-01), Shin

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