Transport neck ring

Details Transport neck ring Transport neck ring

1983-10-28

1986-03-11

Silbaugh, Jan

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

Mold having movable core or movable pin

249144, 264537, 425525, 425533, 425534, B29C 4504, B29C 4906

Patent

active

045753318

ABSTRACT:
A carrier ring for achieving attachment to the thermoplastic perform as the preform is formed in a split injection mold is disclosed. The split injection mold defines a mold cavity into which a core pin is positionable. The mold cavity, along with the position core pin, defines the principle portion of the preform cavity. The remainder of the preform cavity is provided by an annular groove in the carrier ring. This annular groove has a substantially horizontal outwardly extending first wall, a substantially horizontal inwardly extending second wall downwardly displaced from the first wall, and a downwardly and inwardly extending third wall emanating from the outwardmost extent of the first wall and terminating at the inward most extent of the second wall.

REFERENCES:
patent: 3471896 (1969-10-01), Ninneman
patent: 3543340 (1970-12-01), Guelph
patent: 3944643 (1976-03-01), Sato et al.
patent: 3969058 (1976-07-01), Procter
patent: 4201360 (1980-05-01), Schwartzburg et al.

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