Method for manufacturing shaped articles by injection-blow moldi

Details Method for manufacturing shaped articles by injection-blow moldi Method for manufacturing shaped articles by injection-blow moldi

1973-08-09

1976-03-16

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

425DIG208, 425DIG209, 425DIG216, B29C 1707

Patent

active

039446433

ABSTRACT:
A method for manufacturing shaped articles by injection-blow molding. A thermoplastic material is first formed into a bottomed parison by injection-molding said material onto the surface of an injection molding core. The bottomed parison formed on the surface of the core is cooled to a temperature at which it is easily removed from the core, and is removed therefrom. The parison is heated again to a predetermined temperature and the reheated parison is transferred to a blow molding mold, wherein the parison is blow-molded.

REFERENCES:
patent: 2331702 (1943-10-01), Kopitke
patent: 3244778 (1966-04-01), Ninneman
patent: 3412186 (1968-11-01), Piotrowski
patent: 3470282 (1969-09-01), Scalora

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