Method for molding products from polymeric material

Details Method for molding products from polymeric material Method for molding products from polymeric material

1976-05-17

1977-12-27

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

264 51, 264126, 264DIG65, B29D 2700

Patent

active

040655300

ABSTRACT:
Apparatus for molding products from polymeric material comprising cooperating mold elements forming a mold cavity for receiving polymeric material to be molded, means for introducing steam into thermoconductive relationship with the respective mold elements and separate valved conduits through which the steam in thermoconductive relationship with the respective mold elements is discharged. Also a method of molding products from polymeric material comprising introducing polymeric material into a mold cavity formed by cooperating mold elements, causing steam to flow in thermoconductive relationship with the respective mold elements and separately controlling the duration of such steam flow in thermoconductive relationship with the respective mold elements.

REFERENCES:
patent: 2066988 (1937-01-01), Lee
patent: 2066993 (1937-01-01), McCombs
patent: 2250697 (1941-07-01), Bassett
patent: 2954589 (1960-10-01), Brown
patent: 3170010 (1965-02-01), Schultz et al.
patent: 3236927 (1966-02-01), Thompson
patent: 3259677 (1966-07-01), Zwick
patent: 3855377 (1974-12-01), Uebelhart et al.

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