Thermoplastic molding process

Details Thermoplastic molding process Thermoplastic molding process

2007-02-06

2007-02-06

Staicovici, Stefan (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

C264S530000, C264S537000, C264S538000, C264S313000, C249S183000

Reexamination Certificate

active

10618985

ABSTRACT:
The invention provides a novel thermoplastic molding process useful in the manufacture of hollow, deformable thermoplastic articles such as hollow doll heads. In the process of the instant invention, a parison is formed at a first injection station and is transferred to a blow mold station. At the blow mold station, the parison is transformed into a hollow, deformable thermoplastic article through application of a vacuum and gas injection. Articles made by the process of the instant invention have a highly realistic appearance and texture.

REFERENCES:
patent: 2702411 (1955-02-01), Winstead
patent: 4115494 (1978-09-01), Valyi
patent: 4143453 (1979-03-01), Taluba
patent: 6403003 (2002-06-01), Fekete et al.
patent: 6524519 (2003-02-01), Ohba et al.
patent: 6733716 (2004-05-01), Belcher
patent: WO 01/83064 (2001-11-01), None

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