Importance

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Abstract

A process is taught for separating heterogeneous plastic material into homogeneous fractions, which comprises: a. feeding the plastic material in a triturated form to a first water-containing separation tank to separate the high specific weight products from the low specific weight products; b. recovering the mixture of high specific weight products from the bottom of said first separation tank and drying them in a first drier; c. treating the resulting mixture with a chemical agent capable of swelling/modifying the plastic materials which are sensible to said chemical agent; and d. drying the products so treated and feeding them to a second separation tank, in which the nonswollen/nonmodified plastic material precipitates while the remaining material, maintained on the surface, is discharged.

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First Claim