Mold useful in the production of hollow thermoplastic molded art

Details Mold useful in the production of hollow thermoplastic molded art Mold useful in the production of hollow thermoplastic molded art

1996-03-01

2000-08-22

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

264572, B29C 4516

Patent

active

06106260&

ABSTRACT:
Molds useful in the production of polythermal plastic resin articles are disclosed. One of the molds disclosed contains a set of a female mold member and a male mold member having opposing mold surfaces respectively, wherein at least one of the mold members has a gas passage therein; and a gas introducing member having a tip and a gas path extending therethrough, the gas introducing member being disposed in at least one of the mold members such that the tip does not protrude from its respective mold surface, the gas path being in communication with the gas passage, wherein the gas introducing member is a molded piece having at least one of grooves in a peripheral part or penetrating holes through an interior thereof, with the grooves and holes communicating with the gas passage.

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