Process for the manufacture and separation from the mold of inje

Details Process for the manufacture and separation from the mold of inje Process for the manufacture and separation from the mold of inje

1989-06-29

1990-06-19

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264335, 264336, 425437, 425556, B29C 4543

Patent

active

049351877

ABSTRACT:
A process for the manufacture of injection molded articles out of material that is capable of being processed in an injection molding process comprising injection fluid material into a hollow space of a mold of a desired form, hardening or reacting the injected material at raised temperatures and subsequently separating the molded article from the mold at the same high tempeature by the aid of inert gas and/or air, pressed between the molded article and the mold, which is regulated by a self readjusting conical valve.

REFERENCES:
patent: 4438065 (1984-03-01), Brown
patent: 4442055 (1984-04-01), Oelsch et al.
patent: 4521367 (1985-06-01), Underwood
Gastrow, Hans, "Der Spritzgie.beta.-Werkzeugbau", 1982.

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