Global Patent Index - EP 1100985 A1

EP 1100985 A1 2001-05-23 - METHOD AND DEVICE FOR PRODUCING CELLULOSIC MOULDED PARTS

Title (en)

METHOD AND DEVICE FOR PRODUCING CELLULOSIC MOULDED PARTS

Title (de)

VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG CELLULOSISCHER FORMKÖRPER

Title (fr)

PROCEDE ET DISPOSITIF POUR PRODUIRE DES CORPS MOULES CELLULOSIQUES

Publication

EP 1100985 A1 (DE)

Application

EP 99923301 A

Priority

  • AT 9900141 W
  • AT 129498 A

Abstract (en)

[origin: WO0006814A1] The invention relates to a method for producing a spunbonded nonwoven containing solvent-spun cellulosic fibres. Said method is characterized in that a cellulose solution in an aqueous tertiary amino-oxide is extruded through a nozzle (1) with spinning holes and the extruded filaments (3) are drawn in an air gap and transferred into a spinning bath (2). The filaments in the precipitating bath (2) are taken up by a first conveyor (5) on which a curtain of substantially parallel filaments of substantially uniform thickness is formed. Said filament curtain is transported by means of the first conveyor (5) from the spinning bath (2) onto a second conveyor (8) which is inclined downwards. On the second conveyor (8) the curtain is transported downwards onto a third conveyor (10) which evacuates the curtain at a speed which is lower than the speed of travel of the filament curtain transported downwards on the second conveyor.

IPC 1-7 (main, further and additional classification)

D01D 7/00; D01F 2/02; D04H 3/02

IPC 8 full level (invention and additional information)

D01D 5/06 (2006.01); D01D 7/00 (2006.01); D01F 2/00 (2006.01); D04H 3/015 (2012.01); D04H 3/02 (2006.01); D04H 3/05 (2006.01); D04H 3/11 (2012.01)

CPC (invention and additional information)

D04H 3/02 (2013.01); D01D 7/00 (2013.01); D01F 2/00 (2013.01); D04H 3/015 (2013.01); D04H 3/11 (2013.01)

Citation (search report)

See references of WO 0006814A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0006814 A1 20000210; AT 406386 B 20000425; AT A129498 A 19990915; AU 4022799 A 20000221; BR 9912570 A 20010502; CN 1149308 C 20040512; CN 1316026 A 20011003; EP 1100985 A1 20010523; ID 27213 A 20010308; JP 2002521585 A 20020716; TW 457307 B 20011001; US 2002046799 A1 20020425; US 6706224 B2 20040316

INPADOC legal status


2007-06-13 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20061221

2002-04-03 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020219

2001-05-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010126

2001-05-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE