喂入提前量对棉/羊毛段彩纱结构及性能的影响  

Effect of advance-feeding on structure and performance of cotton/wool segment colored yarns

作　　者：史晶晶 杨恩龙 SHI Jingjing;YANG Enlong(College of Material and Textile Engineering,Jiaxing University,Jiaxing,Zhejiang 314001,China)

机构地区：[1]嘉兴大学材料与纺织工程学院,浙江嘉兴314001

出　　处：《纺织学报》2024年第12期67-73,共7页Journal of Textile Research

基　　金：教育部产学合作协同育人项目(220502054163039,220502054265747)。

摘　　要：针对前罗拉钳口处须条断开后回缩产生的不匀,提出段彩纱纺制时2组须条交替提前喂入原理。采用棉/羊毛双皮圈2组须条间断或连续喂入的方法制得棉/羊毛段彩纱及AB纱,并对成纱结构及性能进行分析。结果表明:棉/羊毛段彩纱有棉和羊毛的纯色纱段,也有棉和羊毛混色纱段;喂入提前量增加了混色段长度,但制得段彩纱的混色段长度仍在同轴后罗拉段彩纱的17%以内;随着喂入提前量的增加,棉/羊毛段彩纱条干均匀度、断裂强度和有害毛羽先改善后恶化;喂入提前量为0.3 mm时,棉/羊毛段彩纱的断裂强度是未提前喂入的1.38倍,达到棉/羊毛(30/70)AB纱断裂强度的96%;合适的喂入提前量可制得混色段短且强度高的棉/羊毛段彩纱,在花式纱线领域具有潜在的应用价值。Objective Sirospun is only suitable for two sets of rovings with similar fiber length,while fibers with different lengths require different gauges during the drafting process.In this study,cotton and wool rovings were fed into a double apron drafting device,and segment colored yarn and AB yarn were produced by intermittent and continuous feeding separately.In this research,cotton/wool segment colored yarns and AB yarns were prepared based on the double apron drafting ring spinning machine.However,when spinning conditions were the same,the CV and strength of cotton/wool segment colored yarn were worse than those of AB yarns.This paper reports on the development of a method for reducing the performance gap between two types of yarns.Method Aiming at the unevenness caused by the retraction of the roving at the front roller nip,the principle of alternating advance-feeding of two rovings was proposed in such a way that when the front middle roller stopped feeding the cotton roving,and the back middle roller kept feeding the wool roving.When the cotton roving broke at the front roller nip,the gripping force by the front roller would disappear.The cotton roving was held by apron on the front middle roller,and the fore-end of the roving retracted from the front roller nip.Before the wool roving stopped feeding,the cotton roving was fed into the front roller nip in advance,so that when the cotton roving resumed feeding,they are perfectly connected to the wool roving,avoiding weak points in the yarn due to the shrinkage of the roving.The advance-feeding of wool roving was carried out in the same way as for the cotton roving.Results Cotton/wool segment colored yarn showed pure color segments as well as mixed color segments.The lengths of the mixed color segment of the yarns with advance-feeding of 0,0.1,0.2,0.3,0.4,and 0.5 mm were 28.5,30.9,32.7,35.1,37.1,and 39.8 mm,respectively.As the advance-feeding amount increased,the length of the cotton/wool mixed color segment gradually increased too,but the lengths of the mixed col

关 键 词：花式纱线 棉/羊毛段彩纱 棉/羊毛AB纱 纱线结构 纱线性能 喂入提前量 

分 类 号：TS104.7[轻工技术与工程—纺织工程]