Patent · US Active

Extrusion granulation method and device, and granulate produced therefrom

US8147738B2 · kind B2 · utility

43Cited by

2References

21Claims

0Family size

Inventors

Jaroslaw Boczon · Großostheim, DE
Andreas Doll · Aschaffenburg, DE
Sven Fenchel · Rodgau, DE
Brent Allan Culbert · Wil, CH
Fernando Eusebio · Uttwil, CH
Franziska Morganti · Bellinzona, CH

Key dates

Filing date	Nov 12, 2007
Grant date	Apr 3, 2012
Priority date	—
Expiry date	Jul 26, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29B2009/165
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for the production of granulate grains of polymers from thermoplastic polyesters or copolyesters from a polyester melt using an extrusion granulator. The polyester melt is fed to nozzles of the extrusion granulator and then, with draw-in rollers, to the granulation device via an extraction section as extrusions exiting from the nozzle, wherein, e.g., an extrusion extraction speed is set by the draw-in rollers. The invention also relates to an improved extrusion granulator according to the invention having a wave device between the nozzles and the extraction channel, and granulate grains produced according to the method according to the invention.

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