Production of articles of foamed plastics material

Details Production of articles of foamed plastics material Production of articles of foamed plastics material

1977-03-30

1978-08-15

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Plural sets each comprising a female mold and opposed...

Molds or press members traveling transversely to molding motion

4254031, 425446, 425351, 425444, 425359, 425 4R, B29C 302

Patent

active

041068840

ABSTRACT:
A machine for the production of articles of foamed plastics material in a two-stage process has a first work station for a hot preforming stage and a second work station for a following cold forming stage. Each station has a two-part mould, the second mould part of each mould being movable towards and away from its first mould part by means of a fluid cylinder, and the first mould parts are connected together and mounted so as to be movable in unison in a direction at right angles to the direction of movement of the second mould parts.

REFERENCES:
patent: 1291637 (1919-01-01), Burkhardt
patent: 2257732 (1941-10-01), Clark, Jr.
patent: 2757414 (1956-08-01), Chaloupka
patent: 3068512 (1962-12-01), Van Houten
patent: 3810730 (1974-05-01), Carlsson
patent: 3830613 (1974-08-01), Aoki
patent: 3871801 (1975-03-01), Buchmann

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