EP 0807698 B1 20021106 - Process and apparatus for the preparation of fibrets from cellulose derivatives
Title (en)
Process and apparatus for the preparation of fibrets from cellulose derivatives
Title (de)
Verfahren und Vorrichtung zur Herstellung von Fibrets aus Zellulosederivaten
Title (fr)
Procédé et dispositif pour la préparation d'une structure fibrillaire à base de dérivés de cellulose
Publication
Application
Priority
DE 19616010 A 19960423
Abstract (en)
[origin: EP0807698A2] A process for the preparation of microfibres - comprises adding a dope containing a cellulose derivative (eg. cellulose ether or ester) and solvent for this derivative to a precipitating agent and then subjecting the suspension to shear conditions in order to precipitate the dope and form the microfibres, after which the solvent and precipitating are both separated from the microfibres. The suspension formed from the dope and precipitating agent is alternately accelerated and braked at least once as it passes through the shear field. Also claimed is the equipment used in this process.
IPC 1-7
IPC 8 full level
D01D 5/18 (2006.01); D01D 5/40 (2006.01); D01F 2/24 (2006.01); D01F 2/28 (2006.01)
CPC (source: EP US)
D01D 5/18 (2013.01 - EP US); D01D 5/40 (2013.01 - EP US); D01F 2/24 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE ES FR GB LI
DOCDB simple family (publication)
DE 19616010 A1 19971106; DE 19616010 C2 19980709; AU 1907897 A 19971030; AU 757068 B2 20030130; DE 59708645 D1 20021212; EP 0807698 A2 19971119; EP 0807698 A3 19980408; EP 0807698 B1 20021106; US 5868973 A 19990209
DOCDB simple family (application)
DE 19616010 A 19960423; AU 1907897 A 19970422; DE 59708645 T 19970418; EP 97106492 A 19970418; US 83170397 A 19970410