Injection blow molding method

Details Injection blow molding method Injection blow molding method

1982-11-26

1984-09-25

Silbaugh, Jan

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264520, 264528, 264529, 264532, 264537, 425526, 425529, 425530, 425533, 425538, B29C 1707

Patent

active

044735154

ABSTRACT:
A technique is described for preparing molecular biaxially oriented hollow articles from thermoplastic materials. The invention involves forming a parison on a cooled core rod by injecting a hot thermoplastic material into a cavity formed by the core rod and a cooled injection mold, cooling the parison with low temperature coolant to a temperature within the orientation range of the thermoplastic material, transferring the parison to a stretch blow molding position and permitting the temperature of the parison to equilibrate itself. The parison is then stretched, oriented to yield the desired biaxially oriented article, cooled and ejected.

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patent: 4151248 (1979-04-01), Valyi
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