Method and apparatus for extruding thermoplastic shape

Details Method and apparatus for extruding thermoplastic shape Method and apparatus for extruding thermoplastic shape

1982-01-13

1984-06-05

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264237, 264248, 264557, 264571, 425325, 425388, B29D 720

Patent

active

044527527

ABSTRACT:
A method and apparatus for continuously cooling a thermoplastic shape having two open sides in which the thermoplastic shape, in its at least partially molten state, is extruded and/or drawn along an elongated form having a contour complimentary to the contour of one side of the two open sides and, simultaneously with moving the thermoplastic shape, at least partially cooling the thermoplastic shape by cooling the form with a liquid cooling medium and drawing a vacuum, on the previously mentioned one side of the two open sides of the thermoplastic shape, through the form.

REFERENCES:
patent: Re23171 (1949-11-01), Backland
patent: 2814071 (1957-11-01), Allan et al.
patent: 3169272 (1965-02-01), Maxson
patent: 3226457 (1965-12-01), Smith, Jr.
patent: 3296661 (1967-01-01), Moustier
patent: 3473194 (1969-10-01), Farrow
patent: 3507939 (1970-04-01), Williams et al.
patent: 3538210 (1970-11-01), Gatto
patent: 3966383 (1976-06-01), Bussey, Jr.
patent: 4340340 (1982-07-01), Brown et al.

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