Method of filling cavities, in particular, mold cavities, with a

Details Method of filling cavities, in particular, mold cavities, with a Method of filling cavities, in particular, mold cavities, with a

1980-08-21

1982-02-09

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

2643286, 264DIG83, 422133, 422134, 425543, 425562, 425817R, B29D 2700, B29F 104

Patent

active

043149553

ABSTRACT:
The invention relates to a method of filling cavities and, in particular, mold cavities, with a reactive solid-forming or foam-forming mixture, wherein at least two reactants are introduced into a spatially limited mixing zone, mixed therein as they pass through, and the mixture produced is introduced into a mold cavity where it reacts and wherein the mold cavity is initially enlarged in-part for storing a portion of the mixture, which portion is subsequently transferred to the final mold cavity volume. The object of the invention is to produce plastic articles which are shaped in molds, but also to fill out other cavities, for example, for the purposes of reinforcement.

REFERENCES:
patent: 3617029 (1971-11-01), Breer et al.
patent: 3690800 (1972-09-01), Schwab et al.
patent: 3982870 (1976-09-01), Boden et al.
patent: 4129636 (1978-12-01), Boden et al.

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