ApplicationNo. 05/573487 filed on 05/01/1975
US Classes:442/261, At least one layer is a preformed synthetic polymeric film or sheet405/270, Impermeabilization428/515, Next to second addition polymer from unsaturated monomers442/290, Olefin polymer or copolymer sheet or film (e.g., polypropylene, polyethylene, ethylene-butylene copolymer, etc.)442/392, Multiple nonwoven fabric layers composed of the same polymeric strand or fiber material442/398Olefin polymer or copolymer sheet or film (e.g., polypropylene, polyethylene, ethylene-butylene copolymer, etc.)
ExaminersPrimary: Bell, James J.
AbstractA laminate is provided having sufficient strength and hydrocarbon resistance to be used as a pond liner. The laminate has at least one cohesive batt of polypropylene fiber having a weight of about 100 g/m2 to about 250 g/m2 heat bonded to at least one polyethylene film having a thickness of about 10 to about 50 mils and a density of about 0.905 to about 0.925 g/cc.