Title:
NONWOVENS FROM POLYTRIMETHYLENE TEREPHTHALATE BASED STAPLE FIBRES
Document Type and Number:
WIPO Patent Application WO2002024999
Kind Code:
A3
Abstract:
A method for making a nonwoven web from staple fibres of polytrimethylene terephthalate which comprises: (a) making polytrimethylene terephthalate fibres having a cut length of from 10 to 200 millimetres and a fibre weight of 0.1 to 20 deniers per filament; (b) carding the staple fibres at a belt speed of up to 1000 meters per minute, a cross lap of web of from 1 to 50 layers and a web weight of 5 to 500 g/m2 in a carding machine selected from the group consisting of roller-top, flat-top and layering types, to produce a nonwoven web; and (c) mechanically bonding the web by hydroentanglement at a belt speed of up to 500 metres per minute with from 1 to 10 multiple passes and water jet hydraulic pressure of 100 to 50000 kPa (1 to 500 bar).
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Inventors:
SHIFFLER DONALD ALBERT
HWO CHARLES CHIU-HSIUNG
HWO CHARLES CHIU-HSIUNG
Application Number:
PCT/EP2001/011136
Publication Date:
August 15, 2002
Filing Date:
September 25, 2001
Export Citation:
Assignee:
SHELL INT RESEARCH (NL)
International Classes:
D04H1/42; D04H1/46; D04H1/70; (IPC1-7): D04H1/46; D04H1/42; D04H1/72
Foreign References:
| GB1254826A | 1971-11-24 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 09 30 July 1999 (1999-07-30)
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 09 30 July 1999 (1999-07-30)
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 09 30 July 1999 (1999-07-30)
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