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PE Sheet Contains 70% Recycled Tires
A sheet extruder has found a route to lower material cost by compounding up to 70% crumb rubber from recycled tires into polyethylene or polypropylene. Carolina Materials LLC in Belmont, N.C. uses patented technology to encapsulate the crumb rubber on a counter-rotating twin-screw from Sino-Alloy Machinery Inc. in Taiwan before extruding it into sheet on a single-screw from Cincinnati Milacron, Batavia, Ohio. Carolina Materials makes some sheet from pellets and some is directly compounded in-line. Commercial applications include bases for satellite dishes with up to 70% rubber and flooring with up to 50% rubber. Carolina Materials is developing non-skid mats and will also market its 70% rubber-filled PE in pellet form ("grade 1370"). Tel: (704) 825-1033 * www.carolinamaterials.net
Copyright Gardner Publications, Inc. Jul 2005
