Fabrics for protective garment or cover

• US 5,082,721 A
• Filed: 08/15/1990
• Issued: 01/21/1992
• Est. Priority Date: 02/16/1989
• Status: Expired due to Fees

• Current Assignee: American Hyperform Incorporated
• Original Assignee: American Hyperform Incorporated
• Inventors: Holemans, Peter, Smith, W. Novis Jr.
• Primary Examiner(s): Bell, James J.
• Application Number:
  US07/567,972
• Time in Patent Office: 524 Days
• Field of Search: 428/246, 428/252, 428/253, 428/280, 428/282, 428/284, 428/287, 428/296, 428/421, 428/422, 428/902, 2/81
• US Class Current: 442/289
• CPC Class Codes: A62B 17/006 against contamination from chemicals, toxic or hostile environments; ABC suits
• CPC Class Codes: A62D 5/00 Composition of materials for coverings or clothing affording protection against harmful chemical agents
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: D06N 2209/067 Flame resistant, fire resistant
• CPC Class Codes: D06N 2209/103 Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
• CPC Class Codes: D06N 2209/105 Resistant to abrasion, scratch
• CPC Class Codes: D06N 2209/125 Non-permeable
• CPC Class Codes: D06N 2209/128 Non-permeable
• CPC Class Codes: D06N 3/045 with polyolefin or polystyrene (co-)polymers
• CPC Class Codes: D06N 3/047 with fluoropolymers
• CPC Class Codes: Y10S 428/902 High modulus filament or fiber
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31544 Addition polymer is perhalogenated
• CPC Class Codes: Y10T 442/3878 Fluorinated olefin polymer or copolymer sheet or film [e.g., Teflon@, etc.]
• CPC Class Codes: Y10T 442/40 Knit fabric [i.e., knit strand or strip material]
• CPC Class Codes: Y10T 442/56 From synthetic organic fiber
• CPC Class Codes: Y10T 442/677 Fluorinated olefin polymer or copolymer sheet or film [e.g., TeflonR, etc.]

Abstract

The invention provides a fabric for use in the manufacture of protective garments, containers and covers comprising an inner layer of an tear resistant fabric of high tensile fibers, a film layer bonded on the top surface of said tear resistant fabric comprising a meltable polyhalogenated resin and a film layer of an ethylene-vinyl alcohol copolymer bonded on the bottom surface of the tear resistant fabric.

Claims

1. A laminated fabric for protective clothing, containers and covers for protection against hazardous liquids and vapors consisting of a layer of an tear resistant fabric of high tensile fibers, an outer film layer bonded to said tear resistant fabric comprising a fusible or meltable polyhalogenated ethylene resin, and an inner film comprising an ethylene-vinyl alcohol copolymer layer bonded to said tear resistant fabric, whereby said laminated fabric prevents the passage of hazardous vapors.

2. The fabric for protective clothing according to claim 1 wherein said polyhalogenated resin comprises a fluorinated ethylene perfluoroalkyl vinyl ether copolymer resin.

3. The fabric for protecting clothing according to claim 1 wherein said polyhalogenated resin comprises a fluorinated ethylene propylene copolymer resin.

4. The fabric for protective clothing according to claim 3 wherein said polymer resin has a melting point between about 175 to 350°

C.

5. The fabric for protective clothing according to claim 1 wherein said high tensile fiber is selected from the group consisting of polyethylene terephthalate, poly p-phenylene terephthalamide, poly m-phenylene terephthalamide, carbonaceous polymeric oxidized polyacrylonitrile, nylon and polybenzimidazole.

6. The fabric according to claim 1 comprising a tear resistant fabric sandwiched between a film layer of a polyhalogenated resin film and a film layer of an ethylene-vinyl alcohol copolymer.

10. A protective garment fabricated in part from the fabric according to claim 1.

11. The garment of claim 10 including a face piece comprising an ethylene-vinyl alcohol copolymer.

7. A fabric for protective clothing, containers and covers for protection against hazardous liquids and vapors consisting of a layer of an abrasion resistant fabric, a first film layer adhesively bonded on one surface of said abrasion resistant fabric, said first film layer comprising a fusible and/or meltable polyhalogenated ethylene resin selected from the group consisting of ##STR2## said resin having a melting point between about 175 to 350°

C., and a second film layer comprising an ethylene-vinyl alcohol copolymer layer bonded on the other surface of said fabric, whereby said fabric prevents the passage of hazardous vapors.

8. The fabric for protective clothing according to claim 7 wherein said abrasion resistant fabric comprises fibers selected from the group consisting of polyethylene terephthalate, poly p-phenylene terephthalamide, poly m-phenylene terephthalamide, nylon, carbonaceous polymer, polybenzamidazole, and oxidized polyacrylonitrile.

12. A protective garment fabricated in part from the fabric according to claim 7.

9. A fabric for protective clothing, containers and covers for protective clothing, containers and covers for protection against the penetration of hazardous liquids and vapors comprising a layer of an abrasion resistant fabric comprising high modulus fibers, a top film layer consisting of a polymer of the formula:

space="preserve" listing-type="equation">[CF.sub.2 --CF--(O(CF.sub.2)CF.sub.3)--CF.sub.2 --CF.sub.2 ].sub.n

adhesively bonded onto said fabric layer, said polymer having a melting point of about 100 to 350°

C., and a bottom film comprising a layer of an ethylene-vinyl alcohol copolymer which is bonded to the bottom of said fabric layer.

13. A protective garment fabricated in part from the fabric according to claim 9.

14. The protective garment of claim 13 including a face piece comprising a layer of an ethylene-vinyl alcohol copolymer and a layer of an ionomer or nylon.