Apparatus for manufacturing webs of synthetic thermoplastics

Details Apparatus for manufacturing webs of synthetic thermoplastics Apparatus for manufacturing webs of synthetic thermoplastics

1985-06-03

1987-03-17

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Electro-static or inductive field

264 22, 425224, B29C 4788

Patent

active

046504117

ABSTRACT:
Apparatus for manufacturing webs of synthetic thermoplastics comprises a machine frame, a cooling roller mounted in said machine frame and provided with drive means, and an extrusion die mounted in said machine frame and spaced above said cooling roller and connected to a supply line for molten plastic material and having a die slot which faces the cooling roller and is parallel to a generatrix of said roller, also comprising two electrodes, which in the direction of rotation of the cooling roller precede the slot and are disposed adjacent to the lateral end portions of the slot and mounted in the machine frame and directed toward the cooling roller, and electric cables electrically connected to the electrodes and to the cooling roller. The electrodes consist of brush electrodes consisting of wire ends arranged like a brush.

REFERENCES:
patent: Re27771 (1973-10-01), Owens et al.
patent: 3758251 (1973-09-01), Gillyns et al.
patent: 4517143 (1985-05-01), Kisler
patent: 4534918 (1985-08-01), Forrest, Jr.

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