EP 0847456 B1 20020731 - PROCESS FOR THE PREPARATION OF A MIXTURE OF CELLULOSIC FIBERS AND MICROFIBERS
Title (en)
PROCESS FOR THE PREPARATION OF A MIXTURE OF CELLULOSIC FIBERS AND MICROFIBERS
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER MISCHUNG VON CELLULOSISCHEN FASERN UND MIKROFASERN
Title (fr)
PROCEDE DE PREPARATION D'UN MELANGE DE FIBRES ET DE MICROFIBRES CELLULOSIQUES
Publication
Application
Priority
- FR 9600990 W 19960625
- FR 9507641 A 19950626
Abstract (en)
[origin: FR2735794A1] The present invention relates to a process for the preparation of a mixture of cellulosic fibers and microfibers. Said process comprises the preparation of a cellulosic solution (C); the extrusion of said solution (C) through the hole or holes of a die (1); bursting said solution (C) when it comes out of said hole or holes by projecting a liquid or gas fluid (F) in a direction making an angle lower than or equal to 75 degrees with the axes of said die (1), said fluid (F) being neutral or appropriate to regenerate or precipitate, only partially, the cellulose; receiving, in a cellulose precipitation or regeneration bath, the dispersion generated at the bursting step; recovery of the fibers and microfibers more or less bonded, obtained in said bath. Said process provides for the preparation of mixtures rich in microfibers (with a titration lower than 1 dtex, particularly between 0.5 and 0.3 dtex). It also provides for the continuous preparation of non woven materials.
IPC 1-7
IPC 8 full level
D01D 5/06 (2006.01); D01D 5/11 (2006.01); D01F 2/00 (2006.01); D01F 2/06 (2006.01); D04H 3/16 (2006.01)
CPC (source: EP US)
D01D 5/11 (2013.01 - EP US); D01F 2/00 (2013.01 - EP US); D01F 2/06 (2013.01 - EP US); D04H 3/013 (2013.01 - EP US); D04H 3/16 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6197230 B1 20010306; AT E221585 T1 20020815; AU 6461596 A 19970130; DE 69622727 D1 20020905; DE 69622727 T2 20031023; EP 0847456 A1 19980617; EP 0847456 B1 20020731; ES 2183002 T3 20030316; FR 2735794 A1 19961227; FR 2735794 B1 19970919; JP 2007070797 A 20070322; JP 3933201 B2 20070620; JP H11508332 A 19990721; WO 9701660 A1 19970116
DOCDB simple family (application)
US 98102598 A 19980812; AT 96924018 T 19960625; AU 6461596 A 19960625; DE 69622727 T 19960625; EP 96924018 A 19960625; ES 96924018 T 19960625; FR 9507641 A 19950626; FR 9600990 W 19960625; JP 2006297756 A 20061101; JP 50420197 A 19960625