Preform for a hot fill pressure container

Details Preform for a hot fill pressure container Preform for a hot fill pressure container

1993-04-12

1999-03-23

Shoap, Allan N.

Bottles and jars

End wall structure

One-piece side and end wall

53440, 215377, 220606, B65B 5514, B65D 9012

Patent

active

058847928

ABSTRACT:
This relates to the packaging of a hot liquid product in a container having little resistance to internal vacuum wherein immediately after the container has been filled, the container is internally pressurized and closed. This particularly relates to an injection molded preform formed of a suitable polyester resin which is of a configuration related to an intended blow mold cavity whereby the desired biaxial orientation is obtained in the various portions of the resultant container and the wall thickness of the container base is increased so as to prevent undue stress enlargement and creep at high internal pressurization. Internal pressurization on the order of 40-45 psig is envisioned.

REFERENCES:
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patent: 4406854 (1983-09-01), Yoshino
patent: 4497855 (1985-02-01), Agrawal et al.
patent: 4715504 (1987-12-01), Chang et al.
patent: 4755404 (1988-07-01), Collette
patent: 4785948 (1988-11-01), Strassheimer
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patent: 4915992 (1990-04-01), Takakusaki et al.
patent: 4927679 (1990-05-01), Beck
patent: 4950514 (1990-08-01), Strassheimer
patent: 5067622 (1991-11-01), Garver et al.
patent: 5160059 (1992-11-01), Collette et al.
patent: 5251424 (1993-10-01), Zenger et al.

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