Patent · US Expired

Process and apparatus for producing a seamless cellulose-based tubular film by extrusion

US6033618A · kind A · utility

7Cited by

15References

11Claims

0Family size

Assignee

Kalle Nalo GmbH & Co KG · DE

Inventors

Herbert Gord · Ingelheim am Rhein, DE
Klaus-Dieter Hammer · Mainz, DE
Helmut Sattler · Wiesbaden, DE

Key dates

Filing date	Aug 24, 1998
Grant date	Mar 7, 2000
Priority date	—
Expiry date	Aug 24, 2018

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C48/919
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A seamless cellulose-based tubular film is produced by extrusion of an aqueous cellulose-N-methylmorpholine N-oxide solution.

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