传统和赛络纺锦纶长丝包芯纱的比较

为了了解传统和赛络纺锦纶长丝包芯纱的差异,以便更好地组织生产,对现有细纱机进行了改造,分别生产了传统和赛络纺同品种的锦纶长丝包芯纱,并对成纱质量进行了测试。对这2种包芯纱的纺纱机构、成纱质量和纺纱工艺进行了比较,指出传统包芯纱可在加装了芯丝喂入机构和预牵伸机构的细纱机上生产,赛络纺包芯纱可在加装了赛络纺装置和包芯纱装置的细纱机上纺制;赛络纺包芯纱的质量性能明显优于传统包芯纱,尤其在包覆效果、毛羽和条干均匀度方面;二者的粗纱牵伸倍数、芯丝预牵伸倍数、罗拉隔距、罗拉加压相似,但赛络纺包芯纱所采用的粗纱喂入隔距应小些,赛络纺包芯纱的捻系数比传统的低,而锭速可大些。

Comparison of traditional and siro polyamide filament core-spun yarns

In order to get a clear idea about the difference between the traditional and siro polyamide filament core-spun yams and to organize effective production, researchers modified the existing spinning frame, produced the traditional and siro polyamide filament core-spun yams, and tested the properties of the yams. A comparison was made of the two kinds of core-spun yam in terms of the spinning frame, yarn quality and spinning technology. It indicates that the traditional core-spun yam can be manufactured on a spinning frame with additional feeder for core filaments and pre-drawing mechanism, while siro core-spun yam can be made on a spinning frame which is fixed with siro spinning mechanism and core-spun unit. The quality of siro core-spun yam is obviously better than that of the traditional one, especially in the core coverage, hairiness and evenness. They have similar rove drawing multiples, core yam pre-drawing multiples, and roller gauges and pressure in processing. But the feed gauge between two roves of siro core-spun yarn should be smaller, and the twist factor of siro core-spun yam is less than that of the traditional, but its spindle speed can be a little faster.