Chemical resistant, water and dry particle impervious, flame resistant laminate

Abstract

Disclosed is a laminate having flame and chemical resistance, which may be used to form protective fabrics. The laminate contains a first layer of a spunlace fabric having a fire retardant additive applied thereto; and a second layer of a polymeric film.

We claim:  
     
         1 . A laminate comprising: 
 (a) a first layer of a nonwoven fabric having a fire retardant additive applied thereto; and    (b) a second layer containing a flame resistant polymeric film.    
     
     
         2 . The laminate of  claim 1 , wherein the nonwoven fabric is spunlace fabric.  
     
     
         3 . The laminate of  claim 2 , wherein the spunlace fabric comprises cellulose fibers and manmade fibers.  
     
     
         4 . The laminate of  claim 2 , wherein the spunlace fabric comprises cellulose fibers and polyester fibers.  
     
     
         5 . The laminate of  claim 2 , wherein the spunlace fabric comprises wood pulp fibers and polyester fibers.  
     
     
         6 . The laminate of  claim 1 , wherein the laminate has a thickness ranging from about 0.001 to about 0.5 inches.  
     
     
         7 . The laminate of  claim 1 , wherein the first and second layer are joined together by an adhesive.  
     
     
         8 . The laminate of  claim 1 , wherein the first and second layers are joined together by ultrasonic lamination, R.F. sealing, adhesive lamination, or heat bonding with pressure.  
     
     
         9 . The laminate of  claim 1 , wherein the polymeric film is halogenated.  
     
     
         10 . The laminate of  claim 1 , wherein the polymeric film comprises polyvinyl chloride.  
     
     
         11 . The laminate of  claim 1 , wherein the polymeric film has a thickness ranging from about 0.3 to about 8.0 mils.  
     
     
         12 . The laminate of  claim 1 , wherein the fire retardant additive is ammonium polyphosphate, ammonium dihydrogen phosphate, urea polyammonium phosphate, antimony trioxide, sodium antimonate, zinc borate, a zirconium oxide, a molybdenum oxide, a zirconium sulfide, or a molybdenum sulfide.  
     
     
         13 . The laminate of  claim 1 , wherein the fire retardant additive is a chlorinated paraffin, tetrabromobisphenol-A, decabromodiphenyl oxide, hexabromodiphenyl oxide, pentabromobiphenyl oxide, pentabromotoluene, pentabromoethylbenzene, hexabromobenzene, pentabromophenol, tribromophenol derivatives, perchloropentanecyclodecane, hexabromocyclodecane, tris(2,3-dibromopropyl-1)isocyanurate, tetrabromobisphenol-S, 1,2-bis(2,3,4,5,6-pentabromophenoxy)ethane, 1,2-bis(2,4,6-tribromophenoxy)ethane, a brominated styrene oligomer, 2,2-bis-(4(2,3-dibromopropyl)-3,5-dibromophenoxy)propane, tetrachlorophthalic anhydride, and tetrabrornophthalic anhydride.  
     
     
         14 . The laminate of  claim 1 , wherein the fire retardant additive is applied to the first layer at about 5 to about 45 percent by weight of the first layer.  
     
     
         15 . The laminate of  claim 1 , that passes NFPA 701-1989, has at least 12.0 lbs of grab tensile according to INDA IST 110.3-92, and a Suter hydrostatic head of at least 50 cm.  
     
     
         16 . A protective garment formed of the laminate of  claim 1 .  
     
     
         17 . A laminate comprising: 
 (a) a first layer of a spunlace fabric containing cellulose and manmade fibers, the first layer having a fire retardant additive applied thereto;    (b) a second layer of a polyvinyl chloride film.    
     
     
         18 . The laminate of  claim 17 , wherein said first and second layers are joined together by an adhesive.  
     
     
         19 . The laminate of  claim 17 , wherein the laminate has a thickness ranging from about 0.001 to about 0.5 inches.  
     
     
         20 . The laminate of  claim 17 , wherein the fire retardant additive is ammonium polyphosphate, ammonium dihydrogen phosphate, urea polyammonium phosphate, antimony trioxide, sodium antimonate, zinc borate, a zirconium oxide, a molybdenum oxide, a zirconium sulfide, or a molybdenum sulfide.  
     
     
         21 . The laminate of  claim 17 , wherein the fire retardant additive is applied to the first layer at about 5 to about 45 percent by weight of the first layer.  
     
     
         22 . The laminate of  claim 17 , that passes NFPA 701-1989, has at least 12.0 lbs. of grab tensile according to INDA IST 110.3-92, and a Suter hydrostatic head of at least 50 cm.  
     
     
         23 . A protective garment formed of the laminate of  claim 17.