| 摘要 |
<p>1490854 Roller pelletizing apparatus UNION CARBIDE CORP 29 Oct 1974 46697/74 Heading B5A The method of continuously producing compacted bodies of thermoplastic material of uniform shape from particulate thermoplastics material, as described in Specification 1,395,618, in which the particulate material is fluxed in a compounder 12 and the thermally softened extrudate is fed to a rotary compacting zone 20 to form a sheet 34 of interconnected compacted bodies which is disintegrated at 48 to provide the separated bodies, is modified by returning the fines produced during the disintegrating step to the compounder where the particulate material and the fines are heated and fluxed separately. Material from a disintegrator 48 is classified by means 54 and the fines re-cycled to the compounder via a hopper 10<SP>1</SP> and a section of a single or multi-screw element compounder where they are recompounded before admixture with the extrudate discharged from port 16.</p> |
