Process for preparing cast film of thermoplastic resin

Details Process for preparing cast film of thermoplastic resin Process for preparing cast film of thermoplastic resin

1983-04-21

1984-10-23

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264216, 4251748E, 425224, B29D 702

Patent

active

044787723

ABSTRACT:
A process for preparing a thermoplastic resin film by extruding a molten thermoplastic film-forming resin in the form of a continuous molten film onto an electrically grounded moving quenching surface, passing the molten film in proximity to but out of contact with at least one electrode which imparts an electrostatic charge to the film across its full width and withdrawing a solidified film thus formed from said quenching surface; which process comprises extruding the molten film onto a quenching surface characterized by having a channel-like microcracked structure.

REFERENCES:
patent: 3213172 (1965-10-01), Hoelzer
patent: 3660549 (1972-05-01), Hawkins
patent: 4038354 (1977-07-01), Remmington et al.

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