Method of blow molding a container with integral hollow base sta

Details Method of blow molding a container with integral hollow base sta Method of blow molding a container with integral hollow base sta

1995-03-28

1997-03-18

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264531, 264532, 264537, 264572, 428 3692, 4285428, 215373, 425525, B29C 4902

Patent

active

056119887

ABSTRACT:
A preform (1), a method for blow molding a bottle, and a bottle (13) formed from the preform and by the method are disclosed for use with beverages and the like wherein the bottles usually contain such beverages under pressure. The preform is shaped so that the resultant bottle is provided with a product-containing portion having a preferred hemispherical end portion and an integral bottom portion including a void therein for defining a hollow base portion (4, 12) which, in one form, contains fluid under pressure for balancing pressures related to the pressurized product. The hollow base portion provides for efficient use of material, and a minimal number of manufacturing steps, for providing a stable base for the hemispherical end portion (11) of the product containing portion of the bottle.

REFERENCES:
patent: 4403706 (1983-09-01), Mahajan

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