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US 8,235,704 B2Granted
Method and apparatus for manufacturing blow molded containers
AssigneeGraham Packaging Company, L.P.
InventorPaul Kelley
Life of this patent
Estimating the term…
Abstract
A method for forming a container includes receiving a parison, enclosing the parison with a mold that includes a cavity, and inflating the parison in said mold to form a blow molded container with a moveable region at the cavity. The method further includes repositioning the moveable region before filling the blow molded container.
Claims18
A base assembly for forming a container with a base having a moveable region and a bearing surface, comprising:
- a base pedestal;
- a base plug coupled to said base pedestal, said base plug having a base mold adapted to form the moveable region and the bearing surface of the container base so that a first portion of the moveable region protrudes outward from the base beyond the bearing surface in a first position of said base mold before activation thereof to move the moveable region inwardly, and so that a second portion of the moveable region does not project beyond the bearing surface in the first position of said base mold before activation thereof,
- said base mold having:
- a bearing surface forming portion to form a portion of the bearing surface of the container base;
- a cavity portion to form the first portion of the moveable region protruding outward from the base beyond the bearing surface, said cavity portion being below said bearing surface forming portion in cross section view and circumscribed by said bearing surface forming portion in plan view;
- and
- a moveable portion to form the second portion of the moveable region which does not project beyond the bearing surface in the first position, said moveable portion being arranged at a central longitudinal axis of said base mold and being above said bearing surface forming portion in cross section view,
- wherein, during activation said moveable portion is constructed and operative to move relative to said bearing surface forming portion and said cavity portion.
5 more elements
A base assembly for forming an end portion of a container, said base assembly comprising:
- a base mold having a recess to form a first portion of a region to be moved of the end portion of the container and a standing surface forming portion to form a non-moveable standing surface of the end portion;
- and
- a moveable portion to form a second portion of the region to be moved of the end portion of the container, said moveable portion being arranged at a central longitudinal axis of the base assembly and being surrounded in plan view by said base mold, said moveable portion being constructed and operative to be moveable relative to said base mold, with said base mold remaining stationary,
- wherein said recess is arranged inside of and below said standing surface forming portion in cross section view, and
- wherein said moveable portion has an uppermost portion thereof that is arranged at all times above said standing surface forming portion in cross section view.
2 more elements
Dependencies are inferred from the claim text.