Method for forming articles by injection molding

Details Method for forming articles by injection molding Method for forming articles by injection molding

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

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