Method for forming an opening in a container

Details Method for forming an opening in a container Method for forming an opening in a container

1992-08-11

1993-10-26

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

264156, 264163, B29C 4340, B29C 5132

Patent

active

052563561

ABSTRACT:
A method for forming an opening in a container in which 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 about a pivot pin and spring oriented such that its shear surface rotates along an axis normal to a path of travel of the mold portions.

REFERENCES:
patent: 3845187 (1974-10-01), Dahlberg
patent: 4108941 (1978-08-01), Kermoian
patent: 4446088 (1984-05-01), Daines
patent: 4612153 (1986-09-01), Mangla
patent: 4877391 (1989-10-01), Baston et al.
patent: 5019313 (1991-05-01), Warburton
patent: 5085571 (1992-02-01), Congleton

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