Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Plural sequential shaping or molding steps on same workpiece
Patent
1985-10-17
1987-11-17
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Plural sequential shaping or molding steps on same workpiece
264 13, 264106, 264107, 2643287, 425810, B29C 4304, B29C 4504
Patent
active
047073217
ABSTRACT:
In a method for forming articles by injection molding, in which a melted plastic material is injected into a cavity formed between a movable die and a stationary die, the method including the steps of injecting the melted plastic material into the cavity under the condition of substantially no pressure, and pressing the movable die against the stationary die during or after injection so as to press-mold the article.
REFERENCES:
patent: 3196485 (1965-07-01), Battenfeld et al.
patent: 3940465 (1976-02-01), Hauser et al.
patent: 4089926 (1978-05-01), Taylor
patent: 4185955 (1980-01-01), Holmes et al.
patent: 4472124 (1984-09-01), Kashihara et al.
patent: 4540534 (1985-09-01), Grendol
Segawa Takashi
Tsuboi Kunio
Bartholomew James
Silbaugh Jan H.
Sony Corporation
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