Plastic article or earthenware shaping or treating: apparatus – Preform severing means – Cutter guided by or cooperating with peripheral edge of...
Patent
1991-05-10
1992-11-10
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Preform severing means
Cutter guided by or cooperating with peripheral edge of...
264154, B29C 4340, B29C 5132
Patent
active
051621231
ABSTRACT:
A spring-oriented rotary shear key is used in a mold for forming a container with a latch opening, from a sheet of deformable material. The mold has upper and lower mold portions with die surfaces disposed facing each other and configured to press the sheet of deformable material inserted therebetween into a container. Upper and lower keys, each having a shear surface, are mounted in the upper and lower mold portions, respectively, such that the shear surfaces face each other in substantially parallel alignment to form an opening in the container as the mold portions travel towards each other. The lower key is mounted such that its shear surface rotates along an axis normal to a path of travel of the mold portions.
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Davis Robert B.
Dolco Packaging Corp.
Woo Jay H.
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