Patent · US Expired

Method and device for producing crystallizable plastic material

US7291694B1 · kind B1 · utility

1Cited by

5References

14Claims

0Family size

Assignees

Buehler AG · DE
Rieter Automatik GMBH · DE

Inventors

Camille Borer · Flurlingen, CH
Martin Mueller · Heubach, DE
Frank Gloeckner · Aschaffenburg, DE

Key dates

Filing date	Jun 9, 2000
Grant date	Nov 6, 2007
Priority date	—
Expiry date	Jun 9, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29B2009/165
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A method for manufacturing a crystallizable plastic material is disclosed. The process includes the step of melting an amorphous plastic material, pelletizing the material, crystallizing it and then post condensing the plastic material with the proviso that the plastic material is not subjected to heating after the melting step but prior to the crystallization step and then subjecting the plastic material to sieving after the crystallization step.

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