Patent · US Expired

Method and device for producing cellulosed shaped bodies

US6902690B1 · kind B1 · utility

4Cited by

2References

10Claims

0Family size

Assignee

Zimmer, Inc. · US

Inventors

Frank-Günter Niemz · Rudolstadt, DE
Wilhelm Meyer · Krefeld, DE
Tanja Mainzer Althof · Genhausen, DE

Key dates

Filing date	Sep 29, 2000
Grant date	Jun 7, 2005
Priority date	—
Expiry date	Nov 24, 2021

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01F2/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a method for producing cellulosed shaped bodies. (a) Cellulose and an aqueous aminoxide are mixed, whereby a suspension is produced. (b) A cellulose solution is produced from the suspension, whereby water evaporates. (c) A first property and a second property of the produced cellulose solution is measured and the measured value is used for correcting the composition of the solution and (d) the cellulose solution is extruded through a gap of air and into an aqueous regenerating bath where said solution is coagulated to form shaped bodies.

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