Draped parison blow molded box

Details Draped parison blow molded box Draped parison blow molded box

1990-07-03

1991-11-05

Seidleck, James J.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

220469, 220675, B65D 140

Patent

active

050630946

ABSTRACT:
A dobule-walled plastic box 20 is molded from a single parison 50 in an unlimited depth by closing the bottom of parison 50 and draping it downwardly over a core 60 so that a leading part of the parison forms an inside wall of the box and a following part of the parison forms an outside wall of the box. After parison 50 is draped over core 60, outer mold parts 61 close around the core and the draped parison; and the box is blown in a cavity between the core and the outer mold parts. The parison can be ballooned while draping down over the core to enlarge the parison to stand out from and surround the core, which can be raised during the draping process. Parison 50 can also be deballooned after draping to stay within the confines of outer mold parts 61 while core 60 raises and while the outer mold parts close.

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