POLYVINYL CHLORIDE COATED FABRICS FOR USE IN AIR BAGS

• US 20100129575A1
• Filed: 12/10/2009
• Published: 05/27/2010
• Est. Priority Date: 08/30/2008
• Status: Abandoned Application

• Current Assignee: Bradford Industries, Inc.
• Original Assignee: Bradford Industries, Inc.
• Inventors: Veiga, Manuel J.
• Application Number:
  US12/634,949
• Publication Number:
  US 20100129575A1
• Time in Patent Office: Days
• US Class Current: 428/35.400
• CPC Class Codes: B05D 3/12 by mechanical means
• CPC Class Codes: B32B 2255/02 on fibrous or filamentary layer
• CPC Class Codes: B32B 2605/00 Vehicles
• CPC Class Codes: B32B 5/26 another layer next to it also being fibrous or filamentary relative arrangement of fibres or filaments of different layers B32B5/12
• CPC Class Codes: B60R 2021/23514 coated fabric
• CPC Class Codes: B60R 21/235 characterised by their material
• CPC Class Codes: D06N 2203/04 Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: D06N 2203/068 Polyurethanes
• CPC Class Codes: D06N 2209/106 Roughness, anti-slip, abrasiveness
• CPC Class Codes: D06N 2209/108 Slipping, anti-blocking, low friction
• CPC Class Codes: D06N 2211/268 Airbags
• CPC Class Codes: D06N 3/06 with polyvinylchloride or its copolymerisation products surface treatment or foaming for floor coverings D06N7/0007
• CPC Class Codes: D06N 3/08 with a finishing layer consisting of polyacrylates, polyamides or polyurethanes or polyester
• CPC Class Codes: D06N 3/144 with polyurethane and polymerisation products, e.g. acrylics, PVC
• CPC Class Codes: D06N 3/183 the layers are one next to the other
• CPC Class Codes: D06N 3/186 one of the layers is on one surface of the fibrous web and the other layer is on the other surface of the fibrous web
• CPC Class Codes: D10B 2401/061 elastic
• CPC Class Codes: D10B 2505/124 Air bags
• CPC Class Codes: Y10T 428/1341 Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
• CPC Class Codes: Y10T 442/20 Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
• CPC Class Codes: Y10T 442/2041 : Two or more non-extruded coatings or impregnations
• CPC Class Codes: Y10T 442/2098 : At least two coatings or impregnations of different chemical composition

Abstract

Textile fabrics for use in air bags and side curtains having at least one coating layer of polyvinyl chloride thereon, which may be a flat sheet, such as used in driver side air bags, or a multi-layered woven textile having preconfigured air-holding cavities therein for use in side curtains such as are installed in sport utility vehicles. Coating layers of elastomeric polyurethane may be applied to the textile fabric in addition to the coating layer of polyvinyl chloride. The textile fabrics may be coated on one side only, and may be coated on both sides (on opposed first and second surfaces). The polyvinyl chloride coatings, whether alone or in combination with other polymeric coatings, provide air bags or side curtains with superior air-holding characteristics. Means for adjusting the coefficient of friction of the air bag outer surface is also disclosed as an embodiment that includes a calendered coated textile fabric.

Claims

1. A coated textile fabric for an air-holding vehicle restraint system which comprises:

a) a textile fabric having opposed outer surfaces; and

b) a coating layer of polyvinyl chloride on at least one surface thereof.

3. The coated textile fabric of claim 1, in which at least one coating layer of polyvinyl chloride has an overlying coating layer of polyvinyl chloride.

5. The coated textile fabric of claim 1, in which one of said opposed outer surfaces has a low coefficient of friction.

7. The coated textile fabric of claim 1, in which one of said opposed outer surfaces has a high coefficient of friction.

9. The coated textile fabric of claim 1, having a polyvinyl chloride base coat and a polyvinyl chloride top coat, said top coat having a low coefficient of friction.

10. The coated textile fabric of claim 1, having a polyvinyl chloride base coat and a polyvinyl chloride top coat, said top coat having a high coefficient of friction.

11. The coated textile fabric of claim 1, having a polyvinyl chloride base coat and a polyurethane top coat, said top coat having a low coefficient of friction.

12. The coated textile fabric of claim 1, having a polyvinyl chloride base coat and a polyurethane top coat, said top coat having a high coefficient of friction.

13. The coated textile fabric of claim 1, in which one of said opposed outer surfaces has a low coefficient of friction relative to the coefficient of friction of the other outer surface.

2. A coated textile fabric for an air-holding vehicle restraint system, which comprises:

a) a multi-layered textile fabric having first and second opposed outer surfaces and preconfigured air-holding cavities therein;

b) at least one coating layer of polyvinyl chloride coated on at least one of said opposed outer surfaces of said textile fabric.

4. The coated textile fabric of claim 2, in which at least one coating layer of polyvinyl chloride has an overlying coating layer of polyvinyl chloride.

6. The coated textile fabric of claim 2, in which one of said opposed outer surfaces has a low coefficient of friction.

8. The coated textile fabric of claim 2, in which one of said opposed outer surfaces has a high coefficient of friction.

14. The coated textile fabric of claim 2, in which one of said opposed outer surfaces has a low coefficient of friction relative to the coefficient of friction of the other outer surface.

15. A coated textile fabric for an air-holding vehicle restraint system, which comprises:

a) a calendered textile fabric having opposed outer surfaces; and

b) a coating layer of polyvinyl chloride on at least one surface thereof.

17. The coated textile fabric of claim 15, in which a second coating layer of polyvinyl chloride is coated on said first coating layer of polyvinyl chloride.

18. The coated textile fabric of claim 15, in which a second coating layer of polyurethane is coated on said first coating layer of polyvinyl chloride.

16. A coated textile fabric for an air-holding vehicle restraint system, which comprises:

a) a calendered multi-layered textile fabric having first and second opposed outer surfaces and preconfigured air-holding cavities therein; and

b) a coating layer of polyvinyl chloride on at least one surface thereof.

19. A coated textile fabric for an air-holding vehicle restraint system, which comprises a calendered textile fabric and at least one coating of a low weight polyvinyl chloride or a low weight elastomeric polyurethane selected from the group consisting of aromatic or aliphatic polyester, polyether and polycarbonate polyurethanes on at least one surface thereof.

20. The coated textile fabric of claim 19, having a coating comprising at least one of a low weight polyvinyl chloride or a low weight elastomeric polyurethane selected from the group consisting of aromatic or aliphatic polyester, polyether and polycarbonate polyurethanes on at least one surface thereof and an overlying coating of low weight polyvinyl chloride or polyurethane.

21. A coated textile fabric for an air-holding vehicle restraint system, which comprises a calendered multi-layered textile fabric having first and second opposed outer surfaces and preconfigured air-holding cavities therein and a coating comprising at least one coating of a low weight polyvinyl chloride or a low weight elastomeric polyurethane selected from the group consisting of aromatic or aliphatic polyester, polyether and polycarbonate polyurethanes on at least one surface thereof.

22. The coated textile fabric of claim 21, having a coating comprising at least one of a low weight polyvinyl chloride or a low weight elastomeric polyurethane selected from the group consisting of aromatic or aliphatic polyester, polyether and polycarbonate polyurethanes on at least one surface thereof and an overlying coating of low weight polyvinyl chloride or polyurethane.

23. A method of making a coated textile fabric for an air-holding vehicle restraint system which comprises precalendering a textile fabric having opposed outer surfaces and applying thereto at least one coating layer of a low weight coating on at least one surface thereof, said coating comprising at least one of a low weight polyvinyl chloride or a low weight elastomeric polyurethane selected from the group consisting of aromatic or aliphatic polyester, polyether and polycarbonate polyurethanes or combinations thereof on at least one surface thereof.

24. A method of making a coated textile fabric for an air-holding vehicle restraint system which comprises precoating a textile fabric having opposed outer surfaces on at least one surface thereof with at least one of a low weight polyvinyl chloride or a low weight elastomeric polyurethane selected from the group consisting of aromatic or aliphatic polyester, polyether and polycarbonate polyurethanes or combinations thereof, and calendering the precoated textile fabric.

25. A method of making a coated textile fabric for an air-holding vehicle restraint system which comprises precalendering a textile fabric having first and second opposed outer surfaces and preconfigured air-holding cavities therein and applying thereto at least one coating layer of a low weight coating on at least one surface thereof, said coating comprising at least one of a low weight polyvinyl chloride or a low weight elastomeric polyurethane selected from the group consisting of aromatic or aliphatic polyester, polyether and polycarbonate polyurethanes or combinations thereof on at least one surface thereof.

26. A method of making a coated textile fabric for an air-holding vehicle restraint system which comprises precoating a textile fabric having first and second opposed outer surfaces and preconfigured air-holding cavities therein on at least one surface thereof with at least one of a low weight polyvinyl chloride or a low weight elastomeric polyurethane selected from the group consisting of aromatic or aliphatic polyester, polyether and polycarbonate polyurethanes or combinations thereof, and calendering the precoated textile fabric.

27. A coated textile fabric for an air-holding vehicle restraint system which comprises:

a) a textile fabric having opposed outer surfaces; and

b) a single coating layer of low weight polyvinyl chloride on at least one surface thereof.

28. The coated textile fabric of claim 27, having a single coating layer of a low weight elastomeric polyurethane selected from the group consisting of aromatic or aliphatic polyester, polyether and polycarbonate polyurethanes or combinations thereof.

29. The coated textile fabric of claim 27, having a single coating layer of a low weight silicone.

31. The coated textile fabric of claim 27, having a single coating layer of a low weight elastomeric polyurethane selected from the group consisting of aromatic or aliphatic polyester, polyether and polycarbonate polyurethanes or combinations thereof on at least one surface thereof.

32. The coated textile fabric of claim 27, having a single coating layer of a low weight silicone on at least one surface thereof.

30. A coated textile fabric for an air-holding vehicle restraint system, which comprises:

a) a multi-layered textile fabric having first and second opposed outer surfaces and preconfigured air-holding cavities therein;

b) a single coating layer of low weight polyvinyl chloride on at least one surface thereof.