Method for blow molding foamed walled plastic open mouthed conta

Details Method for blow molding foamed walled plastic open mouthed conta Method for blow molding foamed walled plastic open mouthed conta

1973-01-24

1976-02-17

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 54, 264 98, 264150, 264151, 264159, 264163, 264321, 264DIG1, 425296, 425DIG214, 425817R, B29C 1707, B29C 1714, B29D 2700

Patent

active

039392368

ABSTRACT:
The method for blow molding foam walled plastic using a quadrisectional mold. A parison of foamed plastic may be blow molded to assume the contour of the closed mold, after which the molded shape is severed into two portions and ejected. Desirably, cellular plastic is blow molded to form hot drink cups.

REFERENCES:
patent: 3225127 (1965-12-01), Scott, Jr.
patent: 3292252 (1966-12-01), Reading
patent: 3381076 (1968-04-01), Govatsos
patent: 3432586 (1969-03-01), Stenger
patent: 3482006 (1969-12-01), Carlson, Jr.
patent: 3545040 (1970-12-01), Mehnert

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