Fire blocking fabric

• US 6,790,795 B2
• Filed: 02/28/2002
• Issued: 09/14/2004
• Est. Priority Date: 03/21/2001
• Status: Expired due to Term

• Current Assignee: Tex Tech Industries, Inc.
• Original Assignee: Tex Tech Industries, Inc.
• Inventors: Ritter, Eric D., Erb, David F. Jr., Montgomery, Eliza L.
• Primary Examiner(s): RUDDOCK, ULA CORINNA
• Application Number:
  US10/084,225
• Publication Number:
  US 20020182967A1
• Time in Patent Office: 929 Days
• Field of Search: 428/920, 428/921, 428/99, 428/100, 442/2, 442/35, 442/43, 442/49, 442/402, 442/414, 442/79, 442/82, 442/86, 442/88
• US Class Current: 442/35
• CPC Class Codes: B32B 2601/00 Upholstery
• CPC Class Codes: B32B 2605/18 Aircraft blades, propellers B32B2603/00
• CPC Class Codes: B32B 5/022 Non-woven fabric
• CPC Class Codes: B32B 5/245 another layer next to it being a foam layer
• 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: B32B 7/06 permitting easy separation
• CPC Class Codes: D04H 1/43 Acrylonitrile series
• CPC Class Codes: D04H 1/4334 Polyamides
• CPC Class Codes: D04H 1/43835 Mixed fibres, e.g. at least two chemically different fibres or fibre blends
• CPC Class Codes: D04H 5/02 strengthened or consolidated by mechanical methods, e.g. needling needling machines D04H18/00
• CPC Class Codes: D06N 3/0013 using multilayer webs
• CPC Class Codes: D06N 3/047 with fluoropolymers
• CPC Class Codes: Y10S 428/92 Fire or heat protection feature
• CPC Class Codes: Y10S 428/921 Fire or flameproofing
• CPC Class Codes: Y10T 428/24008 including fastener for attaching to external surface
• CPC Class Codes: Y10T 428/24017 Hook or barb
• CPC Class Codes: Y10T 442/102 Woven scrim
• CPC Class Codes: Y10T 442/159 Including a nonwoven fabric which is not a scrim
• CPC Class Codes: Y10T 442/16 Two or more nonwoven layers
• CPC Class Codes: Y10T 442/172 Coated or impregnated
• CPC Class Codes: Y10T 442/183 : Synthetic polymeric fiber
• CPC Class Codes: Y10T 442/2164 : Coating or impregnation specified as water repellent
• CPC Class Codes: Y10T 442/2189 : Fluorocarbon containing
• CPC Class Codes: Y10T 442/2238 : Fluorocarbon containing
• CPC Class Codes: Y10T 442/3707 : Woven fabric including a nonwoven fabric layer other than paper
• CPC Class Codes: Y10T 442/3724 : Needled
• CPC Class Codes: Y10T 442/3756 : Nonwoven fabric layer comprises at least two chemically different fibers
• CPC Class Codes: Y10T 442/3764 : Coated, impregnated, or autogenously bonded
• CPC Class Codes: Y10T 442/682 : Needled nonwoven fabric
• CPC Class Codes: Y10T 442/696 : Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.]
• CPC Class Codes: Y10T 442/697 : Containing at least two chemically different strand or fiber materials

Abstract

A fire blocking material is disclosed comprising a nonwoven fabric including para-aramid fibers and pre-oxidized polyacrylonitrile, and optionally, a garnett of recycled polybenzimidazole, para-aramid or meta-aramid, or combinations thereof to form a fire blocking textile meeting Federal Aviation Administration regulation FAR 25.853 and Appendix F to Part 25.

Claims

1. A fireblocking aircraft seat cushion covering comprising,

a fabric cover for position directly adjacent an aircraft seat cushion;

a fireblocking fabric comprising a mechanically entangled woven scrim and at least one nonwoven layer comprising 10 to about 90 percent by weight staple para-aramid fibers and about 90 to about 10 percent by weight pre-oxidized polyacrylonitrile fibers in a needlepunched nonwoven layer directly adjacent said fabric cover, said nonwoven layer having a mass per unit area of 210 g/m² or greater; and

a dress cover,

wherein said fireblocking fabric does not contain mineral filler.

2. The seat cushion covering of claim 1, wherein said fabric cover is woven.

3. The seat cushion covering of claim 1, wherein said dress cover is positioned directly adjacent said fireblocking fabric.

4. The covering of claim 1, wherein said scrim is woven meta- aramid yarn, and said dress cover is fabric or leather.

5. The covering of claim 1, wherein at least said nonwoven fabric layer has been treated with a fluoropolymer to impart water repellency.

6. The covering of claim 1, wherein said fabric cover is provided with hook- and -loop fasteners.

7. The covering of claim 1, wherein said fireblocking fabric is provided with hook- and -loop fasteners.

8. The covering of claim 1, wherein said fireblocking fabric comprises about 30 to about 60 percent by weight para-aramid fibers, about 10 to about 40 percent by weight pre-oxidized polyacrylonitrile fibers and about 5 to about 35 percent by weight of a garnett consisting of recycled polybenzimidazole fibers, para-aramid fibers, meta-aramid fibers, or mixtures thereof in at least one needlepunched nonwoven layer.