Patent ID: 6258877
Filing Date: 2001-07-10
Classification: B29B,C08L,Y02W

Abstract:
A method of converting stripped roofing material into a useful product comprising feeding roofing material removed during repair or reroofing of a building roof into a shredders, introducing particles of material from said shredder together with particles of thermoplastic material and a particulate filler material into a high intensity and intimately mixer to form a batch of material to be mixed, intensely mixing said batch of material, comprising said particles of thermoplastic material, said particles from said shredder and said particulate filler material, in order to heat the mixture by friction, bring, said thermoplastic material to a viscous molten state, to produce a heated mass of hot particles of roofing material and filler material coated with molten thermoplastic, then molding said heated mass under pressure into a desired end product.