Apparatus to dry/heat treat continuous web stock of film

Details Apparatus to dry/heat treat continuous web stock of film Apparatus to dry/heat treat continuous web stock of film

1992-03-27

1994-02-22

Bennett, Henry A.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

34162, 226173, F26B 1300

Patent

active

052876373

ABSTRACT:
An apparatus for the constrained drying and/or heat treating of a continuous or roll of, web stock of film. This apparatus includes a mechanism which grasps a film by its edges and moves said film through a drying zone, with said mechanism holding said film taut without substantial stretching of said film in the drying zone, and a means to remove the evaporated solvent from said apparatus. The apparatus is particularly useful for drying film of polybenzoxazole, polybenzothiazole and copolymers thereof, as well as molecular composite films. A method of drying/heat treating film is also disclosed.

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