METHOD AND APPARATUS FOR RECYCLING WASTE MATERIALS INCLUDING THERMOPLASTIC MATERIALS

摘要

A method of recycling waste material including a first fraction of particulate thermoplastic material and a second fraction of particulate material at least some of which is substantially unaffected by thermoplastic processes, comprising the steps of: a) introducing said fractions into an apparatus having at least one shearing zone; b) during the passage of said fractions through said apparatus, subjecting the fractions to shearing forces in said at least one shearing zone to plasticize said first fraction and to intimately mix said first and second fractions to produce a plastic mass wherein said second fraction is disbursed in, and surrounded by said first fraction; and c) restricting the flow of said fractions through said apparatus at at least one position downstream from the position at which said first fraction is plasticized to increase the pressure in said shearing zone.