The first extrusion application using a new very-fine powder grade (200-mesh or 55-micron) of recycled tire rubber as an impact modifier is expected to be a black pencil of recycled HIPS and wood flour coextruded with a graphite-filled core. It will use 15% of Polydyne rubber from Lehigh Technologies, Naples, Fla., a two-year-old company with a proprietary cryogenic grinding process. The 200-mesh rubber is reportedly far finer than any grade previously available (recycled tire rubber is typically about 80 mesh). Adding Polydyne reportedly boosts impact strength of reclaimed HIPS by 20% and elongation by 30%.
Lehigh Technologies LLC
801 Laurel Oak Dr. #708 Naples, FL 34108
Phone (239) 593-9782 Fax (239) 591-3609