Tubular films formed from cellulose/protein blends

US6699542B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Peter Weigel · Borchen, DE
• Hans-Peter Fink · Teltow, DE
• Michael Doss · Berlin, DE
• Stefan Beckers · Peine, DE
• Roger Hendrikx · Zonhoven, BE

Key dates

• Filing date: Sep 18, 2002
• Grant date: Mar 2, 2004
• Expiry date: Sep 18, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1324
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a method of manufacturing tubular films from a solution of a mixture if cellulose and proteins by extrusion blowing the solution over an air gap into a precipitation bath, and to the films produced with this method and their application.