Process for filling cavities with flowable reaction mixtures

Details Process for filling cavities with flowable reaction mixtures Process for filling cavities with flowable reaction mixtures

1979-01-11

1982-01-05

Derrington, James H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 455, 264240, 2643288, 26432812, 264DIG83, B29F 103

Patent

active

043093736

ABSTRACT:
The instant invention is directed to a process for filling a cavity with a flowable reaction mixture through an inlet opening located at the bottom of the cavity. The process broadly comprises injecting a relatively small amount of reaction mixture into the cavity to cover the inlet opening with reaction mixture. The injection process is then briefly interrupted. Thereafter, the remaining amount of reaction mixture is injected into the cavity. The invention also relates to apparatus useful in performing the above-described process.

REFERENCES:
patent: 2430033 (1947-11-01), Stacy et al.
patent: 3008193 (1961-11-01), Been
patent: 3652757 (1972-03-01), Wessel et al.

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