Patent · US Active

Method and device for cleaning a polymer melt

US11639018B2 · kind B2 · utility

0Cited by

0References

17Claims

0Family size

Assignee

BB Engineering GmbH · DE

Inventors

Klaus Schafer · Oelde, DE
Jörg Alexander · Remscheid, DE
Friedel Dickmeiss · Eschweiler, DE
Matthias Schmitz · Düsseldorf, DE

Key dates

Filing date	Sep 3, 2018
Grant date	May 2, 2023
Priority date	—
Expiry date	May 18, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C48/76
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Techniques involve cleaning a polymer melt, which allow volatile foreign substances and solid foreign substances to be removed from the polymer melt. Such techniques involve a filter element and a vacuum of a vacuum chamber. The polymer melt is fed through the filter element into the vacuum of the vacuum chamber, The filter element binds the solid foreign substances and the vacuum chamber takes up the volatile foreign substances.

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