Ribbed preform for use in the blow molding of a plastic material

Details Ribbed preform for use in the blow molding of a plastic material Ribbed preform for use in the blow molding of a plastic material

1979-11-27

1990-12-11

Silbaugh, Jan H.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

215 1C, 220 70, 220 72, 264537, 4285428, B29C 4906, B29D 2300

Patent

active

049770055

ABSTRACT:
A champagne bottom plastic bottle having the bottom reinforced by internal radiating ribs which are formed by solid material. The bottle is formed in the customary manner by utilizing a preform which has molded on the inner surface thereof longitudinal ribs. The preform is formed by conventional injection molding equipment which has been modified only to form along the lower part of the customary core member longitudinally extending rib forming grooves.

REFERENCES:
patent: 3137748 (1964-06-01), Makowski
patent: 3900120 (1975-08-01), Sincock
patent: 3961113 (1976-06-01), Marco
patent: 4005245 (1977-01-01), Edwards
patent: 4151249 (1979-04-01), Lee

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