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James M Yost: Flame retardant plastic laminate. Allegheny Plastics, Webb Burden Robinson & Webb, October 23, 1979: US04172179 (3 worldwide citation)

A flame retardant laminate of plastic material, such as polypropylene, comprises a core of non-flame retardant plastic material, initially in the form of sheet or pellets of resin, and a thin layer or cladding of compatible flame retardant plastic material bonded to the core, the layer or cladding p ...


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