Injection blow molding machine having movable parison pins

Details Injection blow molding machine having movable parison pins Injection blow molding machine having movable parison pins

1975-07-23

1977-03-01

Lazarus, Richard B.

Plastic article or earthenware shaping or treating: apparatus

Dough divider type including trap chamber

Rotating trap chamber pickup

425391, 425DIG213, 425DIG216, B29C 1707

Patent

active

040099806

ABSTRACT:
In an injection blow molding machine, parisons are stretched and twisted as they are moved between the parison mold and the blow mold by extending and rotating the parison pins. The stretching and twisting of the parison prior to the blowing operation permits larger containers with smaller finishes to be produced and also permits the finished article to be stronger by regulating the molecular arrangement in the plastic material forming the article.

REFERENCES:
patent: 2834154 (1958-05-01), Koob
patent: 3776991 (1973-12-01), Marcus
patent: 3801690 (1974-04-01), Gilbert
patent: 3905738 (1975-09-01), Farrell

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