NONWOVENS FROM POLYTRIMETHYLENE TEREPHTHALATE BASED STAPLE FIBRES

摘要

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).