Method of moulding containers from at least two different plasti

Details Method of moulding containers from at least two different plasti Method of moulding containers from at least two different plasti

1978-12-18

1982-06-15

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264250, 264255, 2643281, 2643284, 2643287, 2643288, 425130, 425135, 425145, 425149, 425542, 425586, 425256, B29F 106, B29F 112

Patent

active

043350682

ABSTRACT:
A method of moulding containers consisting of two plastic materials compatible with and sealable to each other, of differing nature and/or color, wherein the material is injected into a space provided between the walls of a mould and a counter-mould, and comprising defining within said space by means of removable separators a first and a second sub-space; injecting into said first sub-space a first one of said materials to fill it fully, injecting into the second sub-space the second material, removing said separators and continuing the injection under pressure of said second material until local interpenetration thereof.

REFERENCES:
patent: 2337550 (1943-12-01), Crosby
patent: 2744043 (1956-05-01), Ramberg
patent: 2814330 (1957-11-01), Vanzo et al.
patent: 2837456 (1958-06-01), Parilla
patent: 2848133 (1958-08-01), Ramberg
patent: 3028284 (1962-04-01), Reeves
patent: 3051994 (1962-09-01), Carozzo
patent: 3089199 (1963-05-01), Halacsy
patent: 3221373 (1965-12-01), Kwan
patent: 3462175 (1969-08-01), Johnson
patent: 3822107 (1974-07-01), Wogerer
patent: 3859016 (1975-01-01), McGee et al.
patent: 3917789 (1975-11-01), Heisler
patent: 4160309 (1979-07-01), Scholle

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