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Hot-Fill Container Capable of Internal Pressurization

Inactive Publication Date: 2007-08-16
CONSTAR INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] Provided is a container capable of being hot filled with a product, sealed while the product is hot, and allowed to cool, thereby creating an internal vacuum. The container has improved positive pressure resistance during pressure filling and yet has sufficient vacuum absorption capabilities. The container has an enclosed base, a body having a sidewall that extends upwardly from the base, and an upper portion extending upwardly from the body t

Problems solved by technology

And the kink might remain even after the container encounters internal vacuum or the kink may disappear but leave a wrinkle in the plastic wall.
Even a wrinkle makes the container unappealing and is considered to be commercially detrimental.

Method used

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  • Hot-Fill Container Capable of Internal Pressurization
  • Hot-Fill Container Capable of Internal Pressurization
  • Hot-Fill Container Capable of Internal Pressurization

Examples

Experimental program
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Embodiment Construction

[0020] A bottle 10 includes an enclosed base 12, an upper portion 14, and a body 16 extending between base 12 and upper portion 14, as best shown in FIGS. 1, 2, 6, and 7. Bottle 10 is generally suitable for use in a hot-filling process, in which bottle 10 is filled with a product at an elevated temperature, capped, and allowed to cool. Typically, bottle 10 is formed by an injection blow molding process, but the present invention is not limited by the method of forming the bottle.

[0021] Base 12 preferably is conventional and includes a reentrant portion 20 (shown only in dashed lines in FIG. 2), a standing ring 22, and a heel 24. Base 12 terminates in a shoulder 26. Upper portion 14 includes an upper shoulder 28, a waist 30, a dome 32, and a finish 34. Finish 34 includes threads for receiving corresponding threads of a closure 36 (shown FIGS. 6 and 7). Upper shoulder 28 is located at the boundary between upper portion 14 and body 16. Waist 30 is a portion of reduced diameter located...

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PUM

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Abstract

A container has features to enable it to withstand pressure filling, including a smooth transition between its sidewalls and vacuum panel, no vertical stiffeners on the edges of the vacuum panels, and a gripping portion having wall either with small radial components or oriented at oblique angles. A pair of windows are included in the field portion of the vacuum panel outside of the gripping portion.

Description

[0001] This application claims priority to Provisional Application No. 60 / 774,168, filed Feb. 16, 2006 and incorporated herein by reference in its entirety.BACKGROUND [0002] This invention relates to containers and more particularly to containers suitable for hot filling with perishable foods or beverages. [0003] Perishable foods, such as juices and soup, are often filled at an elevated temperature in a process generally referred to as “hot-fill.” In a typical hot-fill process, a perishable food or beverage is introduced into a plastic container at approximately 185° F. and a cap is applied to seal the container. Upon subsequent cooling of the contents, a negative pressure (that is, below atmospheric pressure) is formed within the container due to shrinkage of the contents. The container may also shrink upon being subjected to hot-filling temperatures, but the product contents generally shrink by a greater volumetric amount upon cooling than the decrease in container volume. [0004] ...

Claims

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Application Information

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IPC IPC(8): B65D90/02
CPCB65D1/0223B65D1/44B65D2501/0081B65D79/02B65D2501/0036B65D79/005B65D79/0084
Inventor KAMINENI, SATYA
Owner CONSTAR INT