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Woven bag for granular materials

A technology of granular materials and polymer materials, applied in the field of woven bags, can solve the problems of harmful working environment, loss, cement powder seepage, etc., and achieve the effects of improving durability, strengthening ends, and improving sealing

Inactive Publication Date: 2018-05-11
LAFARGE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether made of plastic or paper products, the valve will never form a perfect seal
[0008] Therefore, when being filled and sealed, the cement powder may seep or leak through the valve, which may create a harmful working environment and cause losses due to wasted materials

Method used

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  • Woven bag for granular materials
  • Woven bag for granular materials
  • Woven bag for granular materials

Examples

Experimental program
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Effect test

Embodiment Construction

[0042] Figure 1A with 1B A bag 10 for receiving, storing and transporting particulate material 12 is shown. Such as Figure 1B As shown, bag 10 may be filled with particulate material 12 when oriented vertically. An insertable filling tube 14 is provided through the open end of the flattened and / or emptied bag 10 . Particulate material 12 is supplied to bag 10 via tube 14, causing bag 10 to fill and expand. As the bag 10 expands, it changes from a flattened shape to a Figure 1B The fill shape shown. When the bag 10 is deemed sufficiently filled, the supply of particulate material 12 from the tube 14 ceases. Bag 10 may be of any size and may have a shape other than the rectangular shape shown in the figures. Figure 1A with 1B The bag 10 shown in is intended to be stored and shipped on the side with the largest surface area, it being understood that the bag 10 may be stored and shipped on a different side.

[0043]The particulate material 12 may be any material consist...

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Abstract

A bag (10) for a granular material (12), comprising: a body (20) defining a volume and formed of a woven polymer material, the body (20) comprising a laminated layer arranged along at least an outer surface (22) of the body (20) located on the opposite side of the volume, the body (20) presenting end portions (30) disposed at opposed extremities (24) thereof, one of the end portions (30) forming astructure (34) presenting an inner surface (37) and arranged to accommodate an outer mating surface (44) of a valve (40), the valve (40) presenting an inner filling surface (42) opposed to the outermating surface (44), the valve (40) being made of a non-woven fabric (46) and presenting a first position wherein the valve (40) is opened and forms a passageway (36) delimited by the inner filling surface (42) allowing for filling the volume with the granular material (12), and a second position wherein the valve (40) and the passageway (36) are closed in order to seal the bag (10), the valve (40) moving from the first position to the second position upon the granular material (12) within the body (20) abutting against the structure (34).

Description

technical field [0001] The present invention relates generally to bags and, more particularly, to woven bags filled with particulate material such as cement. Background technique [0002] Bags for storing and transporting granular materials are made from a variety of materials. Consider, for example, the bags used to store and transport dry cement powder. The bag can be made from a relatively thick paper product, which has the advantage of being made from a relatively inexpensive raw material. However, paper bags can only withstand moisture for a relatively limited period of time before degrading or exposing the contents to water, rendering the contents unsuitable for sale and use. [0003] In addition, paper bags can be damaged due to handling during the process from production to distribution to end users. [0004] In order to overcome said disadvantages, some bag manufacturers manufacture bags made of plastic. Plastic bags are generally more water resistant than paper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D30/24
CPCB65D31/142
Inventor I·森B·沙阿
Owner LAFARGE SA
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