A process and apparatus for single screw solid state shear extrusion pulverization of polymeric materials in which the polymeric materials are... Show moreA process and apparatus for single screw solid state shear extrusion pulverization of polymeric materials in which the polymeric materials are heated to a temperature suitable for forming a continuous thin film of said polymeric material, and then cooled, and normal and shear forces sufficient to form powder of the polymeric material are applied by a single cylindrical or conical mesh screw. The resulting powder is fluidized upon its discharge. Sponsorship: Illinois Institute of Technology United States Patent Show less
A process for recycling rubber, elastomers, and thermoset materials in which the material to be recycled is pulverized in a manner which... Show moreA process for recycling rubber, elastomers, and thermoset materials in which the material to be recycled is pulverized in a manner which maintains the chemical composition of the material, producing a powder. The powder is introduced into a mold which is heated to a temperature of at least about 200.degree. C. and a compression force of at least about 10 tons is applied to the powder for a period of at least one hour, resulting in formation of a single piece of the rubber, elastomeric, or thermoset material, with no change in chemical structure. Sponsorship: Illinois Institute of Technology United States Patent Show less
