Abstract: A process for impregnating with thermoplastic as well as thermosetting polymers in solid state fibers of great length, comprises realizing in a non-aqueous inert and volatile liquid in the absence of any other moistening, dispersing or emulsifying agent, a suspension of the powder polymer, continuously passing through said suspension the fibers fed in a single and preferential direction, separating such fibers during their passage through the suspension or during their staying time therein, into their unitary elements or filaments so as to expose maximum surface of each of them to contact with said suspension, assembling said unitary elements or filaments to maintain, therebetween and within fibers leaving the suspension, a given quantity of polymer powder, as well distributed as possible, eliminating the suspension liquid, submitting the obtained impregnated fibers to a thermal treatment to bring the polymer to the liquid or pasty state, then supplying the assembly to a forming or preforming unit in order to

Abstract: A process is disclosed for manufacturing finished and semi-finished articles from mixtures of normally incompatible synthetic resin scrap materials. The process comprises coarsely grinding thermoplastic scrap materials containing two or more mutually incompatible thermoplastic resins and possibly up to 25 parts % by weight of foreign materials, incorporating into the coarsely ground thermoplastic resin mixture through the application of heat, pressure, or a sequential or simultaneous application of heat and pressure, from about 5 to about 25 parts by weight of a fibrous material, the individual fibers in said fibrous material having an average length equal to at least three times the average size of the fragments constituting the coarsely ground thermoplastic resin mixture, and finally, forming the resin/fiber mass into finished or semi-finished article employing known and conventional techniques.