Apparatus for corona free pinning of extruded polymer film

Details Apparatus for corona free pinning of extruded polymer film Apparatus for corona free pinning of extruded polymer film

1979-08-27

1982-01-12

Lowe, James B.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Electro-static or inductive field

B29D 702, H05B 700

Patent

active

043102948

ABSTRACT:
Apparatus for improving the adhesion or pinning of an extruded polymer film to a moving quenching member, by maintaining in the absence of corona discharge, the quenching member at an electrical potential differing from the potential of the extrusion die, the magnitude of said potential being sufficient to increase the adherence of the film to the quenching member.

REFERENCES:
patent: Re27771 (1973-10-01), Owens et al.
patent: 3427686 (1969-02-01), Busby
patent: 3520959 (1970-07-01), Busby
patent: 3686374 (1972-08-01), Hawkins

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