Composite molding apparatus for articles from two materials havi

Details Composite molding apparatus for articles from two materials havi Composite molding apparatus for articles from two materials havi

1979-06-04

1981-01-06

Welsh, Maurice J.

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

264273, 425134, 425183, 425556, B29C 114, B29F 100

Patent

active

042433622

ABSTRACT:
An apparatus for injection molding composite articles from two materials includes a rotary mold block carrying a two material mold half between a first material mold half and a second material mold half; the rotary block providing, in sequence, a first material mold cavity and a composite material mold cavity in which latter cavity the second material is injected over, and preferably in positive engagement with, the first material. Core pins are carried in the rotary block which includes means to index the pins for providing core areas in the first material and subsequently retracting the pins so that the second material can flow into the core areas for positive engagement of the composite molded materials.

REFERENCES:
patent: 3158109 (1964-11-01), Stott
patent: 3224043 (1965-12-01), Lameris et al.
patent: 3309739 (1967-03-01), Trueblood
patent: 3408691 (1968-11-01), Ruekberg
patent: 3702750 (1972-11-01), Veneria
patent: 3726625 (1973-04-01), Rees
patent: 3832110 (1974-08-01), Hehl
patent: 3947176 (1976-03-01), Rainville
patent: 4118553 (1978-10-01), Buckenthal et al.

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