Fibre condensing device for a spinning machine

摘要

A fiber bundle collecting device (11) is provided on a downstream side of a final delivery roller pair (13) of a drafting device (12), and has a nip roller pair (16), a sucking portion (17) with guide surfaces (29b) and (30b) equipped with suction holes (29a) and (30a) in a moving direction of a fiber bundle (F), with a nipping point of the nip roller pair (16) therebetween, and a perforated belt (18) rotated while in slide contact with the guide surfaces (29b) and (30b). The perforated belt (18) is formed of a plain-woven fabric in a loop-like configuration, and a thermal fusion yarn (34) is used as a yarn forming the fabric, with the thermal fusion yarn (34) being fused at crossing portions (35). The thermal fusion yarn (34) has a core portion (34b) and a sheath portion (34a) which are both formed of polyamide.