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Watertight slider-zipper assembly for reclosable packaging

a technology of sliding zippers and reclosable packaging, which is applied in the direction of packaging, sacks, flexible containers, etc., can solve the problem of watertightness of reclosable packaging

Inactive Publication Date: 2006-06-08
ILLINOIS TOOL WORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, watertightness of the reclosable package is required in numerous applications, for example, in reclosable bags used to store frozen foods.

Method used

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  • Watertight slider-zipper assembly for reclosable packaging
  • Watertight slider-zipper assembly for reclosable packaging
  • Watertight slider-zipper assembly for reclosable packaging

Examples

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Embodiment Construction

[0022] For the purpose of illustration, various embodiments of the invention will be described with reference to a reclosable package of the type depicted in FIG. 1. However, application of the leakproofing techniques of the present invention is not limited to reclosable bags of the type shown in FIG. 1. For example, the zipper can be integrally formed with the bag making film, instead of being joined to the bag making film. Further, the reclosable package may be provided with a header that encloses the slider-zipper assembly and acts as a tamper-evident feature. Alternatively, the bag could be formed with side gussets, with or without a bottom panel.

[0023] A conventional reclosable bag 10 having a flexible plastic zipper 12 operated by manipulation of a slider 14 is shown in FIG. 1. The slider-zipper assemblies disclosed herein can be installed in a reclosable bag of the type shown in FIG. 1 or other types of reclosable packages having different structures. The bag 10 may be made ...

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PUM

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Abstract

A slider-zipper construction that provides a watertight seal below the interlocked zipper profiles on the product side of the zipper. The seal comprises at least one seal part that is compressible or at least partially collapsible. The slider is designed to compress or at least partially collapse that seal part in the area below the plow of the slider, where the zipper profiles cannot be interlocked due to the interference of the plow.

Description

BACKGROUND OF THE INVENTION [0001] This invention generally relates to slider-operated zippers for use in reclosable packaging, such as bags or pouches. In particular, the invention relates to sliders of the type that have a separating finger or plow. [0002] Reclosable bags are finding ever-growing acceptance as primary packaging, particularly as packaging for foodstuffs such as cereal, fresh vegetables, snacks and the like. Such bags provide the consumer with the ability to readily store, in a closed, if not sealed, package any unused portion of the packaged product even after the package is initially opened. To gain acceptance as a primary package for foodstuffs, it is virtually mandatory that the package exhibit some form of tamper evidence to protect the consumer and maintain the wholesomeness of the contained product. In addition, in many cases it is necessary that food product be hermetically packaged. [0003] Reclosable fastener assemblies are useful for sealing thermoplastic ...

Claims

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Application Information

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IPC IPC(8): B65D33/16B65D33/25
CPCB65D33/2591B65D33/2541
Inventor AUSNIT, STEVENPLOURDE, ERIC PAUL
Owner ILLINOIS TOOL WORKS INC