Injection molding apparatus for resin using gas injection

Details Injection molding apparatus for resin using gas injection Injection molding apparatus for resin using gas injection

1995-03-31

1997-06-03

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

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

Extrusion shaping means

2643288, 264572, 4253871, 425546, 425573, 425574, B29C 4513

Patent

active

056352212

ABSTRACT:
An injection molding apparatus for a resin structure uses gas injection. The apparatus includes a resin supply that feeds more than one resin to a mold, a gas exhaust that discharges gas supplied to the resin in order to closely contact the resin to the mold, and a supply selector that selectively opens and closes the resin supply using the pressure of the discharged gas to supply a different kind of resin onto the inner surface of a previously supplied resin.

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