| 摘要 |
<p>Process for the continuous production of granules based on thermoplastic polymers comprising at least one expandable agent and, optionally, other polymers or additives, among which inorganic pigments insoluble in the Polymeric matrix, wherein a first main stream (21) is prepared, in the molten State, and a second stream (22) in the molten State, which englobes the additives (16) and which is added to the first stream. The mixture is extruded through a die (37) which is cooled by means of water jets from nozzles positioned behind the cutting blades.</p> |
