Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1975-12-31
1977-03-29
Kucia, Richard R.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264329, B29F 106
Patent
active
040149749
ABSTRACT:
A method of injection molding wherein a pair of separable mold plates are initially urged together and fluid plastic is injected into a mold cavity formed between the mold plates to form an article. The injection pressure of the fluid plastic is utilized to generate forces sufficient to overcome the internal forces urging the mold plates apart and thus hold the mold plates together until the material being molded solidifies either by cooling, chemical reaction or phase change.
REFERENCES:
patent: 2698460 (1955-01-01), Amo
patent: 3346924 (1967-10-01), Lombard
patent: 3417433 (1968-12-01), Teraoka
patent: 3520026 (1970-07-01), Stidham
patent: 3685937 (1972-08-01), Engel
patent: 3776998 (1973-12-01), Church
Becker Stanley A.
Hercules Incorporated
Kucia Richard R.
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