Coated Woven Fabric or Knit Fabric for a Safety Air Bag
OwnerCécile Lopez, Bertrand Bordes +1inventors
InventorsCécile Lopez, Bertrand Bordes, Christian Wattenhofer
Life of this patent
Estimating the term…
Abstract
The invention relates to a coated woven fabric or knit fabric for a safety air bag and to the production method thereof. More specifically, the invention relates to a coated woven fabric or knit fabric for a safety air bag, which is obtained using a method that does not involve a sizing step or a washing step and which is produced from threads having a pre-determined amount of a lubricant composition on the surface thereof. The invention also relates to the use of the aforementioned threads in the area involving the production of coated woven or knit fabrics for safety air bags, as well as to a safety air bag comprising said coated woven or knit fabric.
Claims20
A coated woven fabric for a safety air bag, obtained by coating a basic woven fabric with an elastomer on at least one surface of the basic woven fabric, characterized in that the basic woven fabric is formed of a yarn having a lubricating composition on at least part of its surface, the average proportion of lubricating composition (solids content) being from 0.2 to 0.7% (including the boundary values) by weight relative to the weight of the basic woven fabric, and in that said yarn forms both the warp and weft of the fabric;
- or a coated knit fabric for a safety air bag, obtained by coating a basic knit fabric with an elastomer on at least one surface of the basic knit fabric, characterized in that the basic knit fabric is formed of a yarn having a lubricating composition on at least part of its surface, the average proportion of lubricating composition (solids content) being from 0.2 to 0.7% by weight (including the boundary values) relative to the weight of the basic knit fabric.
A method of preparing a coated woven fabric or knit fabric for a safety air bag comprising the following steps:
- weaving a yarn having a lubricating composition present on at least part of its surface, the proportion of lubricating composition (solids content) being from 0.3 to 0.9% by weight (including the boundary values) relative to the weight of the yarn, the weaving being performed on a weaving loom in order to obtain a basic fabric in which said yarn forms both the warp and the weft, or knitting this yarn to make a basic knit fabric;
- coating the basic woven fabric or knit fabric with an elastomer on at least one surface of the basic woven fabric or knit fabric.
A method comprising use of a yarn for preparing coated woven fabrics for safety air bags, characterized in that the yarn has a lubricating composition present on at least part of its surface, the proportion of lubricating composition (solids content) being from 0.3 to 0.9% by weight (including the boundary values) relative to the weight of the yarn, and in that said yarn forms both the warp and weft of the fabric;
- or for preparing coated knit fabrics for safety air bags, characterized in that the yarn has a lubricating composition present on at least part of its surface, the proportion of lubricating composition (solids content) being from 0.3 to 0.9% by weight (including the boundary values) relative to the weight of the yarn.
Dependencies are inferred from the claim text.