Gas-feeding nozzle and apparatus and method employing such nozzl

Details Gas-feeding nozzle and apparatus and method employing such nozzl Gas-feeding nozzle and apparatus and method employing such nozzl

1994-10-26

1997-05-06

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

With internal application of fluid pressure

26432812, 425533, 425535, 425546, B29C 4402, B29C 4500

Patent

active

056268157

ABSTRACT:
A gas-feeding nozzle is to be used with a mold attached to an injection molding machine and for introducing a pressurized gas into molten resin injected in a cavity of the mold to produce an injection molded article having a hollow structure. A top forward portion of the gas-feeding nozzle is formed of a gas ejection portion having an inner side wall, along a direction of flow of the pressurized gas, having at least one concavo-convex portion.

REFERENCES:
patent: 4129635 (1978-12-01), Yasuike et al.
patent: 4905901 (1990-03-01), Johnson
patent: 5044924 (1991-09-01), Loren
patent: 5149546 (1992-09-01), Nelson
patent: 5151278 (1992-09-01), Baxi et al.
patent: 5204050 (1993-04-01), Loren
patent: 5273417 (1993-12-01), Nelson

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