Laminate material for use in protective clothing

• US 4,792,480 A
• Filed: 09/14/1987
• Issued: 12/20/1988
• Est. Priority Date: 09/14/1987
• Status: Expired due to Fees

• Current Assignee: Mine Safety Appliances Company (MSA Safety, Inc.)
• Original Assignee: Mine Safety Appliances Company (MSA Safety, Inc.)
• Inventors: Rodgers, Sheridan J., Kairys, Christopher J., Freund, Paul X.
• Primary Examiner(s): McCamish, Marion C.
• Application Number:
  US07/095,682
• Time in Patent Office: 463 Days
• Field of Search: 428/286, 428/296, 428/456, 428/461, 428/516, 428/518, 428/520
• US Class Current: 442/378
• CPC Class Codes: A62D 5/00 Composition of materials for coverings or clothing affording protection against harmful chemical agents
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: B32B 2262/0261 Polyamide fibres
• CPC Class Codes: B32B 2307/304 Insulating
• CPC Class Codes: B32B 2307/3065 Flame resistant or retardant, fire resistant or retardant
• CPC Class Codes: B32B 2307/31 Heat sealable
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2307/416 Reflective
• CPC Class Codes: B32B 2307/7265 Non-permeable
• CPC Class Codes: B32B 2319/00 Synthetic rubber natural rubber B32B2317/22
• CPC Class Codes: B32B 2323/04 Polyethylene
• CPC Class Codes: B32B 2323/10 Polypropylene
• CPC Class Codes: B32B 2327/00 Polyvinylhalogenides
• CPC Class Codes: B32B 2327/12 containing fluorine
• CPC Class Codes: B32B 2327/18 PTFE, i.e. polytetrafluoroethylene
• CPC Class Codes: B32B 2331/04 Polymers of vinyl acetate, e.g. PVA
• CPC Class Codes: B32B 25/18 comprising butyl or halobutyl rubber
• CPC Class Codes: B32B 2571/00 Protective equipment
• CPC Class Codes: B32B 2571/02 defensive, e.g. armour plates, anti-ballistic clothing camouflage nets B32B2459/00
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/12 : next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/304 : comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: B32B 27/306 : comprising vinyl acetate or vinyl alcohol (co)polymers
• CPC Class Codes: B32B 27/32 : comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/322 : comprising halogenated polyolefins, e.g. PTFE
• CPC Class Codes: B32B 7/12 : using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: Y10T 428/31674 : Including natural oil or gum or rosin [e.g., linoleum, etc.]
• CPC Class Codes: Y10T 428/31692 : Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31913 : Monoolefin polymer
• CPC Class Codes: Y10T 428/3192 : Next to vinyl or vinylidene chloride polymer
• CPC Class Codes: Y10T 428/31928 : Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 442/656 : Preformed metallic film or foil or sheet [film or foil or sheet had structural integrity prior to association with the nonwoven fabric]
• CPC Class Codes: Y10T 442/657 : Vapor, chemical, or spray deposited metal layer
• CPC Class Codes: Y10T 442/66 : Additional nonwoven fabric is a spun-bonded fabric
• CPC Class Codes: Y10T 442/676 : Vinyl polymer or copolymer sheet or film [e.g., polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, etc.]
• CPC Class Codes: Y10T 442/681 : Spun-bonded 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.]

Abstract

A material suitable for fabrication into protective garments that is a laminate formed from a layer of a reflective metallic material to provide flash protection and a layer that inhibits penetration by toxic and corrosive chemicals to protect against chemical exposure; both adhered to a cloth substrate to provide support.

Claims

1. A laminate material suitable for use as protective clothing comprising:

a. a first layer of flame retardant heat sealable thermoplastic film;

b. a second layer bonded to said first layer comprising a pliable cloth substrate;

c. a third layer that is impermeable to toxic agents and bonded through a flame retardant thermoplastic film layer to said second layer;

d. a fourth layer comprising a material reflective to radiant heat and bonded through a flame retardant thermoplastic film layer to said third layer; and

e. a fifth layer of flame retardant, substantially radiant heat transparent and light transparent, heat sealable, thermoplastic film bonded to said fourth layer.

2. A laminate material according to claim 1 where said second layer may be a spun bonded olefin;

a spun bonded one hundred percent nylon 6.6 or, a long chain polyamide.

3. A laminate material according to claim 1 where said third layer may be a polyvinylidene chloride;

a laminate comprising polyethylene and polyvinylidene chloride and ethylene vinyl acetate;

a skived tetrafluoroethylene;

an ethylene vinyl acetate;

a vinylidene flouride hexafluoropropylene copolymer;

or, a butyl rubber.

4. A laminate material according to claim 1 where said fourth layer is a metal foil;

a metal film;

or, a metalized thermoplastic film.

5. A laminate material according to claim 1 where said fourth layer is a metal vapor deposited onto a cloth.

6. Clothing garments for use as protection against chemical exposure and heat flashes made from a laminate material comprising:

a. a first layer of flame retardant heat sealable thermoplastic film;

b. a second layer bonded to said first layer comprising a pliable cloth substrate;

c. a third layer that is impermeable to toxic agents and bonded through a flame retardant thermoplastic film layer to said second layer;

d. a fourth layer comprising a material reflective to radiant heat and bonded through a flame retardant thermoplastic film layer to said third layer; and

e. a fifth layer of flame retardant, substantially radiant heat transparent and light transparent, heat sealable, thermoplastic film bonded to said fourth layer.

7. Clothing garments according to claim 6 where said second layer may be a spun bonded olefin;

a spun bonded one hundred percent nylon 6.6 or, a long chain polyamide.

8. Clothing garments according to claim 6 where said third layer may be a polyvinylidene chloride;

a laminate comprising polyethylene and polyvinylidene chloride and ethylene vinyl acetate;

a skived tetrafluoroethylene;

an ethylene vinyl acetate;

a vinylidene flouride hexafluoropropylene copolymer;

or, a butyl rubber.

9. Clothing garments according to claim 6 where said fourth layer is a metal foil;

a metal film;

or, a metalized thermoplastic film.

10. Clothing garments according to claim 6 where said fourth layer is a metal vapor deposited onto a cloth.