Molding tool for forming a closure shell liner

Details Molding tool for forming a closure shell liner Molding tool for forming a closure shell liner

1981-04-21

1983-08-16

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

264268, 425809, B29C 300

Patent

active

043988750

ABSTRACT:
A molding tool for forming a closure shell liner on the inside surface of a closure shell having a skirt with a groove therein. The tool has a central molding member and a shell positioning sleeve concentric with and external of the central member with the sleeve having an upper portion adapted to be positioned opposite the groove in the skirt of the shell and a lower portion extending to the lower end of the sleeve. The outer diameter of the upper portion of the sleeve exceeds the outer diameter of the lower portion by an amount equal to twice the depth of the groove.

REFERENCES:
patent: 945357 (1910-01-01), Wilzin
patent: 1989725 (1935-02-01), Villanyi
patent: 3004297 (1961-10-01), Stover
patent: 3547746 (1970-12-01), Gwinner
patent: 3828963 (1974-08-01), Moller
patent: 3950119 (1976-04-01), Reicheubach
patent: 3958910 (1976-05-01), Wilde
patent: 4274822 (1981-06-01), Tamai et al.
patent: 4312824 (1982-01-01), Mori et al.

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