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Type B bulk bag with liner

Inactive Publication Date: 2005-02-10
BAG INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] Some products require the use of a liner due to moisture sensitivity, D.O.T. requirements, or to prevent the sifting of fine particles through the seams of the bulk bag, but otherwise would not require a bulk bag having characteristics which would exceed those of a Type B bulk bag. Without the availability of a Type B bulk bag having a liner, the purchaser has no choice other than to use a Type C bulk bag having a conductive or anti-static liner. This necessity substantially increases packaging costs. Thus, a need exists for a bulk bag constructed from woven polypropylene fabric and provided with a plastic film liner which meets the definition of a Type B bulk bag by meeting or surpassing the four kilovolt breakdown voltage test.

Problems solved by technology

However, heretofore it has not been possible to provide a bulk bag formed from woven polypropylene fabric having a plastic film liner which is capable of meeting the 4 kilovolt test.
In most instances bulk bags comprising woven polypropylene fabric and a plastic film liner have a breakdown voltage in the range of between 10 kilovolts and 15 kilovolts, and therefore fail to pass the four kilovolt test by a considerable margin.
This necessity substantially increases packaging costs.

Method used

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Embodiment Construction

[0011] Referring now to the Drawings, and particularly to FIG. 1 thereof, there is shown a bulk bag 10 incorporating the present invention. The bulk bag 10 comprises four side walls 12, a top wall 14, and a bottom wall 16. However, as will be readily understood by those skilled in the art, the present invention is equally applicable to tubular bulk bags, U-panel bulk bags, and numerous other bulk bag constructions all of which are well known in the art.

[0012] The side walls 12, the top wall 14, and the bottom wall 16 comprising the bulk bag 10 are all formed from woven polypropylene fabric. More specifically, the side walls 12, the top wall 14, and the bottom wall 16 are formed from conventional 5 ounce per square yard uncoated woven polypropylene fabric. The side walls 12, the top wall 14, the bottom wall 16, and the other components of the bulk bag 10 are joined one to another by sewing along sew lines 17 in the conventional manner. Conventional lift loops 18 may be provided at t...

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Abstract

A Type B bulk bag / liner assembly comprises a bulk bag formed from woven polypropylene fabric and a liner formed from “ADFLEX Q 100 F” (™) film.

Description

CLAIM OF PRIORITY [0001] This application claims priority of prior provisional Application Ser. No. 60 / 493,234 filed Aug. 7, 2003.TECHNICAL FIELD [0002] This invention relates generally to bulk bags, and more particularly to an assembly comprising a bulk bag fabricated from woven polypropylene fabric and having a plastic film liner which meets the definition of a Type B bulk bag. BACKGROUND AND SUMMARY OF THE INVENTION [0003] Flexible Intermediate Bulk Containers a / k / a FIBC's a / k / a bulk bags are divided into four categories, i.e., Types A, B, C, and D. Type A bulk bags comprise any standard bulk bag, with or without a liner, which is designed for use in environments comprising no explosion hazard caused by dusts, gases, vapors, or otherwise. Type C and Type D bulk bags are conductive and dissipative, respectively, and are used for sensitive explosive environments. [0004] A Type B bulk bag comprises a bulk bag wherein the breakdown voltage of the combined fabric / coating / liner is less...

Claims

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Application Information

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IPC IPC(8): B65D88/16
CPCB65D88/1618B65D88/1668B65D88/165
Inventor EISENBARTH, BRADLEY MATTHEWBROWN, BOBBY GLENN
Owner BAG INT
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