Corona free pinning of extruded polymer film

Details Corona free pinning of extruded polymer film Corona free pinning of extruded polymer film

1976-04-16

1979-08-28

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264216, 4251748E, B29D 702, B29C 1700, H05B 700

Patent

active

041660897

ABSTRACT:
The adhesion or pinning of an extruded film forming polymer to a moving quenching member is improved, in the absence of corona discharge, by maintaining the quenching member at an electrical potential while the extrusion die is grounded, one magnitude of said potential being sufficient to increase the adherence of the film to the quenching member.

REFERENCES:
patent: 2187306 (1940-01-01), Formhals
patent: 3319309 (1967-05-01), Owens
patent: 3427686 (1969-02-01), Busby
patent: 3520959 (1970-07-01), Busby

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