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Sealing gussets together through apertures in multi-wall paper and woven polypropylene packages or bags

a technology of woven polypropylene and sealing gussets, which is applied in the direction of flexible containers, sacks, packaging, etc., can solve the problems of increasing the tendency of contents of reclosable packages or bags to leak, and achieve the effect of reducing the leakage of contents or reducing the tendency

Inactive Publication Date: 2008-10-30
ILLINOIS TOOL WORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention aims to prevent or minimize the leakage of contents from a gusseted reclosable package or bag through the gussets near the zipper profiles and the package or bag walls. This is achieved by sealing the gussets together through apertures in the gusset walls, sealing the zipper flanges together through apertures passing through the gussets, or sewing the gussets shut in areas proximate to the zipper.

Problems solved by technology

However, the use of gussets can increase the tendency for the contents of the reclosable package or bag to leak from the gusset area proximate to the intersection of the package or bag walls and the zipper.

Method used

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  • Sealing gussets together through apertures in multi-wall paper and woven polypropylene packages or bags
  • Sealing gussets together through apertures in multi-wall paper and woven polypropylene packages or bags
  • Sealing gussets together through apertures in multi-wall paper and woven polypropylene packages or bags

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Embodiment Construction

[0020]Referring now to the drawings in detail wherein like numerals indicate like elements throughout the several views, one sees that FIG. 1 is a plan view, partially in phantom, of a prior art reclosable package or bag 100 and that FIGS. 2 and 3 are cross-sectional views thereof. The package or bag 100 is formed from co-extensive front wall 102 and rear wall 104 which are typically formed from polymeric materials (such as, but not limited to, polyethylene or polypropylene, including woven polypropylene), multi-wall paper or laminates. Gussets 106, 108 (illustrated in phantom in FIG. 1 and in cross section in FIG. 2) are formed as inwardly pointing folds between the side edges of front and rear walls 102, 104, typically integral with, or at least of the same material as, front and rear walls 102, 104. Gusset 106 is formed from gusset walls 106a, 106b in an inwardly pointing V-shaped configuration while gusset 108 is formed from gusset walls 108a, 108b in an inwardly pointing V-shap...

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Abstract

Reclosable gusseted packages or bags have improved resistance to leaking or spilling through the gussets by sealing the gussets together through apertures in the gusset walls, by sealing the zipper flanges together through apertures passing through the gussets in the package or bag, or by sewing the gussets shut in areas proximate to the zipper.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to improving the leak-proof or spill-resistant quality of gussets in reclosable packages, particularly those made with multi-wall paper or woven polypropylene. This is achieved by sealing the gussets together through apertures in the gusset walls, by sealing the zipper flanges together through apertures passing through the gussets, or by sewing the gusset shut.[0003]2. Description of the Prior Art[0004]In the prior art of reclosable packages or bags, it is well known to use gussets between the front and rear walls to increase the capacity of the package or bag with only a small increase in the packaging material, such as multi-wall paper or polypropylene.[0005]However, the use of gussets can increase the tendency for the contents of the reclosable package or bag to leak from the gusset area proximate to the intersection of the package or bag walls and the zipper. More specifically, the cont...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65D33/24
CPCB65D31/10B65D33/2508B65D33/2591
Inventor HOWELL, CLIFTON R.OWEN, KEVIN
Owner ILLINOIS TOOL WORKS INC