Edgecomb resistance polyester
AssigneeInvista North America S.A.R.L.
InventorThomas Schmitt
Life of this patent
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Abstract
The present invention concerns polyester fabric that is employed in airbags. In particular, the polyester fabric has improved resistance to edge combing—the relative tendency of a fabric to pull apart under seam stress or similar action such as inflation of inflatable restraints. Further, the polyester fabric of the invention must have an edge comb resistance of greater than about 350 Newtons at room temperature (20° C.) and greater than 250 Newtons at 90° C. The polyester fabric of the invention has an acrylic polymer or copolymer finish, or a mixture of acrylic and non-acrylic polymers. The finish is applied from about 1 to about 4 wt. % nominal solids add-on of said fabric.
Claims15
1) A woven polyester fabric having an edge comb resistance greater than 350 Newtons at room temperature and greater than 250 Newtons at 90° C.
11) A polyester airbag having an edge comb resistance greater than 350 Newtons at 20° C. and greater than 250 Newtons at 90° C., said airbag having an acrylic acid ester polymer finish.
Dependencies are inferred from the claim text.