Process for forming an integral hinged single wall blow molded c

Details Process for forming an integral hinged single wall blow molded c Process for forming an integral hinged single wall blow molded c

1982-06-17

1984-12-04

Silbaugh, Jan

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264523, 264527, 264536, 264540, B29C 1707, B29C 1714

Patent

active

044863799

ABSTRACT:
An integral hinged blow molded container having a single wall is produced by inflating a parison within a mold having a hinge forming area with a draw ratio of greater than 1 whereby the parison is reduced in thickness within the hinge forming area relative to the adjacent area. The thus formed parison is severed about a circumference adjacent the formed hinge to create a top portion and a bottom portion openable and closable about the hinge.

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patent: 3524488 (1970-08-01), Scholle
patent: 3659999 (1972-05-01), Shurman
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patent: 3939236 (1976-02-01), Hahn
patent: 4082827 (1978-04-01), Chlystun
patent: 4120635 (1978-10-01), Langecker
patent: 4176413 (1979-12-01), Whitney

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