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Vacuum panel base

a vacuum panel and base technology, applied in the field of vacuum panel base, can solve the problems of stress and strain in the container, and the effect of not being aesthetically pleasing

Inactive Publication Date: 2006-06-01
GRAHAM PACKAGING CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] Exemplary embodiments of the invention provide a plastic container having a tubular sidewall and a base merging with the sidewall. The base includes an annular bearing surface having a weak point, and an inner portion for accommodating inner forces tending to collapse the sidewall. The inner portion has a hinge for facilitating the inward collapse of the inner portion, a vacuum panel, and a support ring interposed between the hinge and the vacuum panel to maintain the shape of the vacuum panel as the inner portion collapses.

Problems solved by technology

As the beverage cools within the container, stresses and strains develop in the container due to changes in the volume of the contents.
While these structural elements molded in the sidewalls' structure can afford structural integrity, they tend not to be aesthetically pleasing.

Method used

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Embodiment Construction

[0018] Embodiments of the invention are discussed in detail below. In describing embodiments, specific terminology is employed for the sake of clarity. However, the invention is not intended to be limited to the specific terminology so selected. While specific exemplary embodiments are discussed, it should be understood that this is done for illustration purposes only. A person skilled in the relevant art will recognize that other components and configurations can be used without parting from the spirit and scope of the invention. All references cited herein are incorporated by reference as if each had been individually incorporated.

[0019]FIG. 1 is a bottom perspective view of an exemplary embodiment of a container 10 according to the present invention. FIG. 1 shows plastic container 10 for packaging liquids and the like. Container 10 can be made from a plastic such as a nylon, polyester, such as PET, a polyolefin, such as polyethylene, polypropylene, or the like. The plastic can b...

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Abstract

A plastic container having a sidewall and a base merging with the sidewall. The base includes an annular bearing surface and an inner portion for accommodating inner forces tending to collapse the sidewall. The inner portion has a hinge for facilitating the inward collapse of the inner portion, a vacuum panel, and a support ring interposed between the hinge and the vacuum panel for facilitating a flexure of the vacuum panel.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates generally to a container having a base structure for enhancing the structural integrity of the container. [0003] 2. Related Art [0004] Many liquid products are now sold to the consuming public in plastic containers that are more aesthetically pleasing. Such containers can have smooth, contoured sidewalls that appear to look more like glass. When these containers are filled by the so-called hot-fill process, they must be structurally sound to withstand various forces relating to the hot-fill process. [0005] The hot-fill process is the procedure by which containers are filled with a beverage at a high temperature and capped soon thereafter. As the beverage cools within the container, stresses and strains develop in the container due to changes in the volume of the contents. In some instances, the hot-fill process can create a vacuum inside the container. [0006] A polyolefin container prep...

Claims

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Application Information

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IPC IPC(8): B65D90/12
CPCB65D1/0276B65D79/005B65D79/0081
Inventor KELLER, GILLESROMAND, MICHELRAPET, GILLESPEREZ, GILLES
Owner GRAHAM PACKAGING CO LP