Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Forming plural articles
Patent
1992-10-08
1999-07-13
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Forming plural articles
2642978, 2643287, 2643288, 2643289, 26432811, 26432812, 26432813, B29C 4500
Patent
active
059222662
ABSTRACT:
Method and apparatus for forming an article having a prescribed volume and mass from a molten plasticized resin using an injection molding machine by (a) forming an oversized mold cavity with respect to an opposing pair of relatively movable mold members between which the article is formed; (b) injecting into the oversized mold cavity a volume of plasticized resin exceeding the prescribed volume of the article and having a mass at least equal to the prescribed mass of the article; (c) applying force to the mold members to reduce the volume of the cavity and pressurize the plasticized resin therein simultaneously with the injection of resin.
REFERENCES:
patent: 3016574 (1962-01-01), Fischer et al.
patent: 3632729 (1972-01-01), Bielfeldt
patent: 3898314 (1975-08-01), Church
patent: 4075266 (1978-02-01), Theysohn
patent: 4375781 (1983-03-01), Bessho
patent: 4540534 (1985-09-01), Grendol
patent: 4589830 (1986-05-01), Clawson
patent: 4620958 (1986-11-01), Wiechard
patent: 4707321 (1987-11-01), Segawa et al.
patent: 4828769 (1989-05-01), Maus et al.
patent: 4832591 (1989-05-01), Thompson
patent: 4849151 (1989-07-01), Tamura et al.
patent: 4900242 (1990-02-01), Maus et al.
patent: 4938679 (1990-07-01), Pietrorazio
patent: 4980115 (1990-12-01), Hatakeyama et al.
patent: 4981634 (1991-01-01), Maus et al.
patent: 5015426 (1991-05-01), Maus et al.
patent: 5044925 (1991-09-01), Watanabe
patent: 5061429 (1991-10-01), Yoshihara et al.
patent: 5068065 (1991-11-01), Maus et al.
Aftergut Karen
Kersey, Esq. George E.
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