Global Patent Index - EP 0806512 B1

EP 0806512 B1 20010808 - Method and device for fibrillating easily fibrillated cellulose fibres, particularly tencel fibres

Title (en)

Method and device for fibrillating easily fibrillated cellulose fibres, particularly tencel fibres

Title (de)

Verfahren und Vorrichtung zum Fibrillieren von leicht fibrillierbaren Cellulosefasern, insbesondere von Tencel-Fasern

Title (fr)

Procédé et dispositif de fibrillation de fibres cellulosiques facilement fibrillables, notamment de fibres tencel

Publication

EP 0806512 B1 20010808 (DE)

Application

EP 97810241 A 19970418

Priority

CH 117396 A 19960508

Abstract (en)

[origin: EP0806512A1] Fibrillating a web of textile fabric (3) containing cellulose fibres, particularly Lyocell (RTM) fibres, comprises using a high-velocity stream of fluid impinging on the spread-out web and accelerating it to strike against an impact surface (13, 16). This procedure is repeated as often as needed till the fibre surface regions split and form fibrils. Also claimed is the apparatus for implementing the process of fibrillating web as above, in particular Tencel (RTM) fibres. The web is accelerated by the flowing fluid in a guiding gap (7) which is bounded on at least one side by a jet (9a, 9b, 10a, 10b) which has a fluid feed channel (12) and, on two opposite sides, a nozzle-like gap exit (10a, 10b) which narrows towards the guide gap. There is a valve (11) which closes each of the exits alternately.

IPC 1-7

D06C 19/00; D06B 3/28

IPC 8 full level

D06C 29/00 (2006.01); D06B 3/28 (2006.01); D06C 19/00 (2006.01)

CPC (source: EP US)

D06B 3/28 (2013.01 - US); D06C 19/00 (2013.01 - EP US); D06B 3/28 (2013.01 - EP)

Designated contracting state (EPC)

AT CH DE ES FR GB IT LI SE

DOCDB simple family (publication)

EP 0806512 A1 19971112; EP 0806512 B1 20010808; AT E204038 T1 20010815; DE 59704221 D1 20010913; ES 2165012 T3 20020301; JP H1088467 A 19980407; US 5845355 A 19981208

DOCDB simple family (application)

EP 97810241 A 19970418; AT 97810241 T 19970418; DE 59704221 T 19970418; ES 97810241 T 19970418; JP 11712997 A 19970507; US 84046197 A 19970418