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Airbag fabric

A technology of fabrics and airbags, applied in the direction of fabrics, textiles, textiles and papermaking, etc., can solve the problems of no structure, unreliable seams, too large, etc., and achieve high coverage factor, reduced manufacturing cost, and small leakage.

Inactive Publication Date: 2009-04-29
ITG AUTOMOTIVE SAFETY TEXTILES GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The capacity of the wall area is uneconomically set too large relative to the unreliable function of the joint
Airbags also have an optimal structure with regard to dynamic loading when using fabrics of known high tenacity yarns

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Airbag fabric
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] Exemplary aspects of fabrics according to the invention

[0065] The fabric parameters shown in the figure below are pre-calculated:

[0066]

[0067] The fabrics are all L1 / 1 plain weave. As mentioned above, the high-density uncoated fabric improves seam sealing because it optimizes the venting of gas through the wall surfaces of the bag by increasing the air permeability under increased internal pressure so that the gas vents in a controlled manner , and in the case of maintaining the load, it returns to approximately zero when the pressure disappears. In the case of tight joints, this particle retention effect can only be controlled by the wall surface.

[0068] Due to the processing of textile airbags according to the corresponding vehicle, the inflator in use and the seam structure, various yarns with different tenacity, stretch and workability are used to process high-density fabrics, so that As far as the processing structure is concerned, the deployment re...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

Fabric for an airbag, comprising warp threads and weft threads, in particular using multifilaments, characterized by a weave density greater than the 95% Professor Walz standard. It can also have a permeability (LD) of less than 3 l / dm<2> / min (at 500 Pa differential pressure) pursuant to ISO 9237, and can be characterized by a warp / weft insertion ratio greater than 1.

Description

technical field [0001] The present invention relates to a fabric for an airbag retention system not only for conventional sewn airbags but also for one-piece woven (OPW) bags. Background technique [0002] EP 1 463 655 A1 (Milliken) discloses an airbag cushion made of a low tenacity (60 to 40 cN / tex) polyester fabric. The airbag cushion is coated and finished by a peripheral seam which is configured as either a double-layer overlapping seam or a triple-layer overlapping seam. Its purpose is to solve the gas escape due to seam leakage through a new seam structure, in which low tenacity coated PES fabric is used for the airbag wall. [0003] DE 100 49 395 A (BST 165) discloses a textile sheet fabric for use in occupant retention systems (Personenrückhaltesystemen), which comprises plastically deformable yarns which, under loading in at least one surface direction The surface of the fabric is allowed to expand and this textile sheet fabric is provided with a specialized elast...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D1/02B60R21/235
CPCB60R2021/23509B60R21/235D03D1/02
Inventor 胡贝尔·诺伯特约尔格·鲁舒尔特托马斯·伊斯拜茨托马斯·格施帕赫
Owner ITG AUTOMOTIVE SAFETY TEXTILES GMBH
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