Easy open woven polypropylene bag

a polypropylene bag and woven technology, applied in the field of bags, can solve the problems of large opening force, difficult to open packages or bags, and difficult to meet the needs of retail or consumer applications

Inactive Publication Date: 2010-08-19
ILLINOIS TOOL WORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]It is therefore an object of the present disclosure to provide an easy open, high ...

Problems solved by technology

This is particularly an issue for larger capacity packages or bags.
Woven polypropylene bags are tough and robust as required by the demands of the distribution channel, but many typically are sewn and may require s...

Method used

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  • Easy open woven polypropylene bag
  • Easy open woven polypropylene bag
  • Easy open woven polypropylene bag

Examples

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Embodiment Construction

[0014]Referring now to the drawings in detail wherein like numerals indicate like elements, one sees that FIG. 1 is a simple drawing of a large package or bag 10. Package or bag 10 includes front and rear walls 12, 14, respectively, which are typically made from woven polypropylene, and sealed together along first and second side seals 16, 18 However, those skilled in the art may see a range of equivalent materials after review of the present disclosure, such as but not limited to, multilayer laminates incorporating scrim, netting, gauze or woven materials, made from claf (heat-sealable, cross-laminated non-woven open-mesh fabric), or strong resin materials such as nylon, polypropylene, high density polyethylene, polystyrene or other similar substrates. The package or bag 10 is typically considered to be “large” within the common usage of the industry in that is designed to be filled with 14-50 pounds of product, although different capacities may be used. The product may include, bu...

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PUM

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Abstract

The disclosure relates to a large package, typically with woven polypropylene walls, including an easy-open strip with a pre-activated peel seal. The easy-open strip achieves a high burst strength by configuring the pre-activated peel seal in shear mode in response to internal (product side) forces while achieving a low consumer opening force by configuring the peel seal in response to external (consumer side) forces.

Description

[0001]This application claims priority under 35 U.S.C. §119(e) of U.S. provisional application Ser. No. 61 / 152,571 filed Feb. 13, 2009, the disclosure of which is hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Disclosure[0003]The present disclosure pertains to a package or bag, particularly a large capacity easy-open package or bag with woven polypropylene walls wherein high burst capability and easy consumer opening capability are maintained.[0004]2. Description of the Prior Art[0005]Commercial packages or bags must have high burst characteristics to survive the distribution channel. This is particularly an issue for larger capacity packages or bags. A representative prior art large capacity reclosable package or bag having high burst capability and easy consumer opening is disclosed in commonly-assigned U.S. Published Patent Application No. 2008 / 0050052 entitled “High Burst Zipper Assembly For Large Reclosable Packages”, published on Feb. 28, 200...

Claims

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Application Information

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IPC IPC(8): B65D33/00
CPCB65D33/18B65D33/1691
Inventor KOENIGKRAMER, RUSTY
Owner ILLINOIS TOOL WORKS INC
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