Patent EP0649936A1 successfully refreshed from Google Patents.
EP0649936A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fabric treated with polymer dispersion to reduce porosity
Assignee: Milliken Research Corp
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Filing: 1994-10-20
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Granted: —
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Expires: 2014-10-20
Abstract
Abstract A textile material for use in air bags made by saturating a woven fabric with an aqueous dispersion of a polyolefin resin, removing the excess liquor and drying the coated fabric at a temperature above the melting temperature of the polyolefin. The textile material exhibits low air permeability and passes the USA FMVSS No. 302 flammability test.
Inventors
- 👤 Richard Henry Parker
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 08:01
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/23; B60R21/235; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/227; D03; D03D; D03D1/00; D03D1/02; D06N; D06N3/00; D06N3/04; D06N3/045
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
91 words
A product obtainable by the process comprising the steps of: (a) providing a woven textile fabric having a weight of 4 to 10 oz/yd 2 ; (b) applying an aqueous dispersion of a polyolefin resin to said fabric to achieve from 3 to 30 wt.% of said polyolefin resin based on the weight of said fabric; (c) drying said fabric to remove water and form a film of said polyolefin resin on said fabric; whereby said fabric has a maximum air permeability of 3.0 cfm/ft 2 at 0.5 inches of water.
Claim 2
Dependent Claim
91 words
A product obtainable by the process comprising the steps of: (a) providing a woven textile fabric having a weight of 4 to 10 oz/yd 2 ; (b) applying an aqueous dispersion of a polyolefin resin to said fabric to achieve from 3 to 30 wt.% of said polyolefin resin based on the weight of said fabric; (c) drying said fabric to remove water and form a film of said polyolefin resin on said fabric; whereby said fabric has a maximum air permeability of 3.0 cfm/ft 2 at 0.5 inches of water.
Claim 3
Dependent Claim
25 words
A product as claimed in Claim 1, wherein said aqueous dispersion is an emulsion comprising from 20 to 50 wt % of said polyolefin resin.
Claim 4
Dependent Claim
26 words
A product as claimed in either one of Claims 1 and 2 wherein said polyolefin resin has a mean particle size of 3 microns or less.
Claim 5
Dependent Claim
26 words
A product as claimed in any one of Claims 1 to 3 wherein said polyolefin resin has a mean particle size of 1 micron or less.
Claim 6
Dependent Claim
29 words
A product as claimed in any one of Claims 1 to 4 wherein said aqueous dispersion is applied to said fabric at a viscosity of less than 300 centipoise.
Claim 7
Dependent Claim
47 words
A product as claimed in any one of Claims 1 to 5 wherein said polyolefin resin is selected from the group consisting of polyethylene, polypropylene, and random and block copolymers and terpolymers of ethylene, propylene, butylene and up to 10 wt.% of C 5 -C 12 olefins.
Claim 8
Dependent Claim
34 words
A product as claimed in any one of Claims 1 to 6 wherein said polyolefin resin is selected from the group consisting of polyethylene, polypropylene, and random and block copolymers of ethylene and propylene.
Claim 9
Dependent Claim
25 words
A product as claimed in any one of Claims 1 to 7 wherein said fabric is saturated with said aqueous dispersion in said application step.
Claim 10
Dependent Claim
25 words
A product as claimed in any one of Claims 1 to 8 wherein said fabric is immersed in said aqueous dispersion in said application step.
Claim 11
Dependent Claim
23 words
A product as claimed in any one of Claims 1 to 9 wherein said fabric is constructed from 300 to 900 denier yarns.
Claim 12
Dependent Claim
22 words
A product as claimed in any one of Claims 1 to 10 wherein said fabric is selected from polyamide and polyester fabrics.
Claim 13
Dependent Claim
90 words
A product as claimed in any one of Claims 1 to 11 whereby said fabric has a maximum air permeability of 1 cfm/ft 2 at 0.5 inches of water, a burn rate according to USA Federal Motor Vehicle Safety Standard No. 302 of 3 inches per minute or less, a minimum tensile strength of 300 Ib; elongation of 30 - 60%; minimum trapezoidal tear of 30 Ib; minimum tongue tear of 15 Ib; minimum Mullen burst strength of 500 psi; and minimum retained tensile strength after abrasion of 240 lb.
Claim 14
Dependent Claim
45 words
A product as claimed in any one of Claims 1 to 12 wherein said fabric is heated to a temperature above the softening point of said polyolefin resin, but below the melting point of said fabric, after water has been removed in said drying step.
Claim 15
Dependent Claim
17 words
An air bag comprising the product fabric as claimed in any one of Claims 1 to 13.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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