Package for granular compositions

a technology of granular compositions and packaging, applied in the direction of packaging goods, liquid materials, transportation and packaging, etc., can solve the problems of product leaking out of the bag, package to appear dirty and/or greasy and undesirable, and product sifting can occur

US20090226573A1Inactive Publication Date: 2009-09-10THE PROCTER & GAMBLE COMPANY
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Publication Date
2009-09-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

A package which is sealed with at least one baffled venting closure system, said baffled venting closure system being formed of at least two closure-lines which extend across the width of the package, and an air flow passage formed between the at least two closure-lines, wherein each of said closure-lines form one or more closure-line vents which allow air to vent out of the interior of the package into the air flow passage and out of the bag to the environment external to the package, and wherein at least one of said closure-lines has at least one wall segment parapeting said closure-line from the closure-line vent adjacent thereto.
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Description

BACKGROUND OF THE INVENTION

[0001] Bags are used to contain a wide variety of consumer products, including granular or powder compositions such as laundry detergents. Typically, these bags are made of thermoplastic film materials such as polyethylene and / or polypropylene. These bags can be formed from a single sheet which can be rolled into tube shape or folded into a rectangular folded bag. The side edges of the sheet are then sealed to form a spine. Further, the lower end or opening of the tube is sealed to allow product to be deposited within. Following filling, the upper opening is similarly sealed. Typical sealing can be done by applying heat or adhesives.

[0002] To be useful to package granular or powder compositions, these bags must be flexible and capable of venting air during stacking on a pallet during packaging or shipping. Although the bags need to allow air to escape, an undesirable side effect known as product sifting can occur, wherein product escapes from any air venting...

Examples

Embodiment Construction

[0024]The present invention comprises a package for storing granular of powdered compositions capable of providing sufficient air venting capabilities meanwhile controlling product sifting occurrence. It has importantly been found that the packages in accordance with the present invention provides for sufficient air venting capabilities to allow any excess air to escape at a sufficient rate to allow for the package to sufficiently deflate after being filled with product. It has further been found that the package in accordance with the present invention controls the occurrence of undesired product sifting while achieving the sufficient air venting capabilities. Without intending to be bound by theory, it is believed that as air venting capabilities increase, product sifting occurrences also increase because the increase ability to vent air tends to allow increased product to escape. It has further been found that the present invention is capable of providing the sufficient air venti...