EP 0879906 B1 20011219 - Process and device for spinning solutions of cellulose carbamate
Title (en)
Process and device for spinning solutions of cellulose carbamate
Title (de)
Verfahren und Vorrichtung zum Verspinnen von Cellulosecarbamat-Lösungen
Title (fr)
Procédé et dispositif pour filer des solutions de carbamate de cellulose
Publication
Application
Priority
DE 19721609 A 19970523
Abstract (en)
[origin: EP0879906A2] For spinning a solution of cellulose carbamate, by extrusion through a jet into a precipitation bath, the extruded filaments are shrouded by a flow of the bath medium in a structured cross section from the jet outlet to the bath surface, moving in the same direction as the filaments. The flow speed of the bath medium at the jet outlet (X1) is 01-0.8 times the filament take-off speed, and the flow speed at the exit from the bath (X3) is 0.96-1.1 times the take-off speed. Also claimed is an appts. with a feed (12) to the precipitation bath (15) for the precipitation medium. A flow body, within the bath container, is a spinning jet (3) with a truncated cone shape and a truncated cone spinning funnel (5) with a cylindrical tube (6) through the wall of the bath container. An external mechanical filament take-off (9) is outside the bath. The point of the spinning jet (3) is immersed into the funnel (5), to give a concentric gap between them.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
Designated contracting state (EPC)
AT DE ES FI FR GB IT
DOCDB simple family (publication)
EP 0879906 A2 19981125; EP 0879906 A3 19981230; EP 0879906 B1 20011219; AT E211190 T1 20020115; DE 19721609 A1 19981126; DE 59802501 D1 20020131; ES 2165641 T3 20020316; US 5968433 A 19991019; US 6234778 B1 20010522
DOCDB simple family (application)
EP 98108315 A 19980507; AT 98108315 T 19980507; DE 19721609 A 19970523; DE 59802501 T 19980507; ES 98108315 T 19980507; US 34474499 A 19990625; US 4865498 A 19980326