Injection molds for the manufacture of composite bodies

Details Injection molds for the manufacture of composite bodies Injection molds for the manufacture of composite bodies

1986-03-20

1987-11-24

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

425127, 425126R, 425129R, 425572, 425577, 425588, 425414, 425416, 249 83, 249122, 249176, 249180, B29C 3912, B29C 4516, B29C 4522, B29C 4532

Patent

active

047086149

ABSTRACT:
An apparatus for molding three concentric plastic materials into a composite body in which the mold includes a pair of molding blocks having reduced ends which define an inner cylindrical cavity into which a first material may be injected, a pair of tubular molding sleeves surrounding the molding blocks and axially movable relative thereto which define an intermediate cavity therebetween into which a second material may be selectively injected to form a second intermediate concentric portion of a composite body and a fixed molding cavity with which the inner and intermediate molding cavities are selectively aligned so that a third material may be selectively injected to form an outer concentric portion of the composite body.

REFERENCES:
patent: 2454508 (1948-11-01), Herrick et al.
patent: 3255278 (1966-06-01), Smith
patent: 4004868 (1977-01-01), Ohdate
patent: 4525134 (1985-06-01), McHenry et al.

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