Process for producing thermoplastic resin hollow molded article

Details Process for producing thermoplastic resin hollow molded article Process for producing thermoplastic resin hollow molded article

1998-05-27

2000-11-14

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264571, 264572, B29C 4906, B29D 2200

Patent

active

061465798

ABSTRACT:
A hollow molded article having no sink marks on its surface and having an excellent appearance is produced by filling a mold cavity with a resin being in a molten state and then ejecting at least a part of the resin by sucking through a resin-ejection opening and introducing gas through a gas-introduction opening into the resin inside of which being in a negative pressure. According to this process, the use of a high-pressure gas is not required.

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Patent Abstracts of Japan, vol. 17, No. 552 (M-1491), Oct. 5, 1993, JP 05 154862 A (Jun. 22, 1993).
Patent Abstracts of Japan, Mar. 1994, vol. 18, No. 302 (M-1618), Jun. 9, 1994, JP 06-064024 A (Mar., 1994).

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