摘要 |
Device for the hot granulation of thermoplastic polymers, optionally expandable, which comprises: a) a die ( 1 ) containing a series of small plates ( 6 ), equipped with a series of extrusion holes, and a plurality of feeding ducts ( 3 ) situated inside the die body ( 2 ) in correspondence with the perforated small plates ( 6 ), lined with a material having a high thermal conductivity ( 4 ); b) a cutting chamber comprising a set of spraying nozzles ( 17 ) which create a jet of drops of a thermostat-regulating liquid for cooling the cut granules; c) a cutting system comprising a cutting plate ( 13 ) supporting a set of knives ( 15 ) arranged so that the cutting profile of the knife is radial with respect to the die.
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