Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Female mold type means
Patent
1993-02-22
1994-07-26
Bushey, Charles S.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Female mold type means
264268, 425128, 425809, B29C 6300
Patent
active
053323815
ABSTRACT:
An apparatus for forming liners of thermoplastic material within closure shells contains a movable die having an inner punch member and an annular outer mold member both of which are movable up and down in relatively slidable relation with each other and arranged so that the inner punch takes its lowermost position after the outer mold member has taken its lowermost position. In one embodiment of the present invention, the lower end surface of the outer mold member is beveled and defines a plurality of radial grooves. The lower end wall of the outer mold member is moved downwardly until it is opposite the horizontal wall of the closure shell. As the inner punch moves into its lowermost position, thermoplastic material is forced through the radial grooves so that a thick annular pad portion of the seal liner is formed beneath the lower end wall of the outer mold member.
REFERENCES:
patent: 2840858 (1958-07-01), Rainer et al.
patent: 2963738 (1960-12-01), Brandes et al.
patent: 3135019 (1964-06-01), Aichele
patent: 3493453 (1970-02-01), Ceresa et al.
patent: 3493995 (1970-02-01), Green
patent: 3564602 (1971-02-01), Peck
patent: 3616954 (1971-11-01), Peck
patent: 3637103 (1972-01-01), Ptak
patent: 3958910 (1976-05-01), Wilde
patent: 3959061 (1976-05-01), Renck et al.
patent: 4088730 (1978-05-01), Wilde
patent: 4260483 (1981-04-01), Nicholson et al.
patent: 4274822 (1981-06-01), Tamai et al.
patent: 4312824 (1982-01-01), Mori et al.
patent: 4388058 (1983-06-01), Kubo
Bushey Charles S.
Zapata Technologies, Inc.
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