On-line drying of hollow fiber membranes

US12280338B2 · kind B2 · utility

Assignee

• GAMBRO LUNDIA AB · SE

Inventors

• Ulrich Bauer · Gerlingen, DE
• Reinhold Buck · Bad Buchau, DE
• Juergen Graf · Dormettingen, DE
• Helmut Hildwein · Werl, DE
• Bernd Krause · Liederbach, DE
• Markus Storr · Echterdingen, DE
• Arnd Wochner · Dotternhausen, DE

Key dates

• Filing date: Sep 24, 2021
• Grant date: Apr 22, 2025
• Expiry date: Oct 31, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2323/50
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to a continuous process for preparing permselective hollow fiber membranes being suitable e.g. for hemodialysis, hemodiafiltration and hemofiltration of blood which comprises a two-stage drying and tempering treatment of the hollow fiber membranes. According to a further aspect, the invention relates to a continuous process for drying permselective hollow fiber membranes on-line. The invention also relates to devices for on-line drying of permselective hollow fiber membranes.