Fluid cooling of injection molded plastic articles

Plastic article or earthenware shaping or treating: apparatus – Shaping means and subsequent product treatment means

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Details

425546, 425552, 425446, 425DIG9, 425DIG60, 425812, B29C 102, B29F 1022

Patent

active

042081777

ABSTRACT:
A method and system for cooling an injection molded plastic article by forming a portion of a mold cavity of fluid permeable porous material that communicates with a cooling liquid passageway and subjecting the cooling liquid to different pressures to vary the flow of fluid through the porous plug.

REFERENCES:
patent: 3156015 (1964-11-01), Harrison
patent: 3225126 (1965-12-01), Bridges et al.
patent: 3505435 (1970-04-01), Schmidt
patent: 3619438 (1971-11-01), Cistone
patent: 3671168 (1972-06-01), Nussbaum
patent: 3704081 (1972-11-01), Immel
patent: 3941528 (1976-03-01), Cotterell
patent: 4139177 (1979-02-01), Hanning
patent: 4164523 (1979-08-01), Hanning

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