Injection blow molding method

Details Injection blow molding method Injection blow molding method

1983-04-01

1988-02-09

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264520, B29C 4906

Patent

active

047241160

ABSTRACT:
In the process to form a plastic flat bottle by blowing air into an injection molded parison having a bottom, the injection blow molding method of the invention is characterized in that the thicknesses of the portions of the parison to form the front and rear faces of the flat bottle are made larger than the thicknesses of the portions of the parison to form the side end faces of the flat bottle, thereby enlarging the heat capacity in the former portions of the parison to form the front and rear faces than that of the portions of the parison to form the side end faces of the flat bottle so as to make the former portions of the parison to be expanded more easily.

REFERENCES:
patent: 2750625 (1956-06-01), Colombo
patent: 2789312 (1957-04-01), Borer
patent: 2792593 (1957-05-01), Hardgrove, Jr.
patent: 3137748 (1964-06-01), Makowski
patent: 3294883 (1966-12-01), Polka

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