Coated airbag base fabric and airbag

A technology of airbags and base fabrics, which can be used in pedestrian/passenger safety arrangements, fabrics, vehicle safety arrangements, etc., and can solve problems such as air barrier properties and insufficient storage compactness

Inactive Publication Date: 2005-11-30
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current situation is that although the adhesiveness between the resin film and the fabric has been improved to a certain extent, it is still not enough in terms of gas barrier properties and compact storage.

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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  • Coated airbag base fabric and airbag
  • Coated airbag base fabric and airbag
  • Coated airbag base fabric and airbag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Use a round cross-section filament with a total fineness of 470dtex, 72 monofilaments, a strength of 8.4cN / dtex, an elongation of 22%, an aspect ratio of 1.0, and untwisted nylon 6·6 fibers, and set the warp tension with a water jet loom It is 70cN / thread, and the weave density of warp thread and weft thread is adjusted to 46 threads / 2.54cm, obtains the fabric of plain weave. Then use a slate blade to apply a solvent-free methyl vinyl siloxane resin solution with a viscosity of 12 Pa·S (12,000 cP) to the fabric by a floating blade coating method, so that the contact pressure between the fabric and the slate blade is maintained at 9N / cm, resin adhesion is 15g / m 2 , and then vulcanized at 190° C. for 2 minutes to obtain a coated airbag base fabric.

[0078] Table 1 shows the properties of the airbag base fabric obtained above. The airbag base fabric is excellent in gas barrier properties, compact bag accommodation, and flame retardancy, and is also excellent in resin ad...

Embodiment 2

[0086] Use a total fineness of 350dtex, 96 monofilaments, a strength of 8.4cN / dtex, an elongation of 22%, an aspect ratio of 3.0, and untwisted nylon 6·6 fiber flat cross-section filaments, and use a water jet loom to set the warp tension to 100cN / thread, the weaving density of warp thread and weft thread is all adjusted to 59 threads / 2.54cm, obtains the fabric of plain weave. Then use a slate scraper to coat the fabric with a viscosity of 8Pa·S (8,000cP) toluene-diluted methyl vinyl siloxane resin solution (resin solid part is 80%) by the floating knife coating method, so that the fabric and The contact pressure of the slate scraper is kept at 2N / cm, so that the resin adhesion is 20g / m 2 , and then dried at 130° C. for 1 minute, and vulcanized at 200° C. for 2 minutes to obtain a coated airbag base fabric.

[0087] Table 1 shows the properties of the airbag base fabric obtained above. The airbag base fabric is excellent in gas barrier properties, compact bag accommodation...

Embodiment 3

[0095] Use total fineness 235dtex, 72 monofilaments, strength 8.4cN / dtex, elongation 24%, aspect ratio 1.0, circular section filament of untwisted nylon 6 fiber, with air-jet loom, warp tension is set to 90cN / root, the weaving density of the warp and weft is adjusted to 76 / 2.54cm to obtain a plain weave fabric. The fabric was then soaked in an 80°C warm water bath containing 0.5 g / l sodium alkylbenzene sulfonate and 0.5 g / l soda ash for 3 minutes, then dried at 130°C for 2 minutes, followed by heat setting at 180°C for 1 minute. Then use the slate scraper to coat the heat-set fabric with a viscosity of 10 Pa·S (10,000 cP) water-based polyurethane resin solution (50% resin solid part) by floating blade coating method, and make the fabric and the slate scraper Keep the contact pressure at 6N / cm, so that the resin adhesion is 20g / m 2 , and then dried at 130° C. for 1 minute to obtain a coated airbag base fabric.

[0096] Table 1 shows the properties of the airbag base fabric o...

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Abstract

The invention relates to a coated base fabric for air bags which exhibits low air permeability and excellent heat resistance and is capable of being stored in a compact state and excellent in the adhesion between fabric and resin coating film; air bags made by using the coated base fabric; and a process for the production of the fabric. Specifically, the invention relates to a coated base fabric for air bags which consists of a fiber fabric coated with a resin on at least one surface, characterized in that at least part of the single yarns constituting the fabric is enclosed with the resin and at least part of the single yarns constituting the fabric is not enclosed with the resin; air bags characterized by being made by the use of the coated base fabric; and a process for the production of a coated base fabric for air bags, characterized by applying a resin solution having a viscosity of 5 to 20 Pa s (5,000 to 20,000cP) to a fiber fabric with a knife coater equipped with an acute-angle doctor knife at a contact pressure between the knife and the fabric of 1 to 15N / cm.

Description

technical field [0001] The present invention relates to a coated airbag base fabric having both gas barrier properties, heat resistance, and packing compactness, and excellent adhesion to a resin film, and an airbag comprising the base fabric. Background technique [0002] In recent years, various airbags have been developed in order to ensure the safety of people in vehicles when accidents occur in various vehicles, especially automobiles, and their effectiveness has been recognized by people, and they have been put into practical use rapidly. However, people still need airbags that are not limited in the environment where the airbags are used, and whose mechanical properties remain stable under severe environments such as high temperature or low temperature. [0003] In the past, in order to improve heat resistance, flame retardancy, gas barrier properties, etc., airbags were coated and laminated with neoprene on plain fabrics made of 334-1,112 decitex nylon 6·6 or nylon 6...

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): B60R21/16D03D1/02D06M15/356D06M15/643
Inventor 森本厚志本母义哉藤山友道
Owner TORAY IND INC
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