Patent · US Active

Method and device for granulating plastics and/or polymers

US8414283B2 · kind B2 · utility

0Cited by
3References
22Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 26, 2012
Grant dateApr 9, 2013
Priority date
Expiry dateApr 26, 2032

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T137/87877
  • WIPO fieldOther special machines
  • WIPO sectorMechanical engineering

Abstract

A method and apparatus for the pelletization of plastics and/or polymers, in which a melt coming from a melt generator is supplied via a diverter valve having different operating positions to a plurality of pelletizing heads through which the melt is pelletized. The plurality of pelletizing heads have different throughput capacities and are used sequentially for the start-up of the pelletizing process, with the melt first being supplied to a first pelletizing head having a smaller throughput capacity and then the melt volume flow being increased and the diverter valve being switched over such that the melt is diverted by the diverter valve to a second pelletizing head having a larger throughput capacity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.