Lyocell纤维转杯纺纱工艺实践

采用转杯纺纱机纺制Lyocell 36.9 tex纱,介绍了前纺工序采取的工艺原则,对转杯纺纺杯直径、纺杯速度、分梳辊速度及捻系数等工艺参数的配置进行了纺纱试验,通过合理配置工艺参数和转杯纺纱元件,保证了Lyocell转杯纱的顺利纺制及成纱质量的提高.     

R20转杯纺纱机纺制人棉19.7tex针织纱的工艺配置及生产实践

介绍了1120型转杯纺纱机纺制人棉针织纱的工艺试验情况。通过纺纱试验，对分梳辊型号和速度、转杯型号和速度、阻捻盘与引纱管型号、捻系数及温湿度等工艺进行了优选配置。     

转杯纺工艺参数及关键部件对成纱质量的影响

通过正交试验,探讨了纺27.8tex纯棉纱时纺纱工艺参数及转杯纺纱机关键部件对成纱质量的影响.通过分析得出了捻度、转杯转速、分梳辊转速的最佳工艺组合,得出了关键部件类型对成纱质量影响的主次顺序为假捻盘类型、转杯直径、引纱管类型、凝聚槽类型、分梳辊类型,其最优组合为转杯直径38mm、分梳辊类型OS21、假捻盘类型为光滑、...     

转杯纺纱的产品质量及可纺性的研讨

为了探索转杯纺纱工艺对成纱质量及纺纱过程的影响,分别对影响成纱质量及纺纱过程的主要工艺参数、分梳辊锯齿规格、锋利度及其转速进行了纺纱试验。结果表明,上述诸因素对成纱质量均有显著影响。并通过理论分析,提出了在本试验条件下的最优工艺及改善成纱质量的有效途径。     

F1603型转杯纺纱机纺纱粗节的控制

为了减少F1603型转杯纺纱机纺纱时产生的粗节纱疵,提高成纱质量.对纺纱过程中粗节产生的原因进行分析,并进行了纺纱试验.结果表明:成纱粗节与纺纱关键部件分梳辊、转杯的机械状态、磨损有关;与转杯纺纱机的工艺配置、通道不良有关.通过采取严格保养周期及润滑周期,定期更换关键器材,周期性更换分梳辊针布,保证纺杯内负压稳定等相应的预防措施,可以降低粗节的产生.     

涤棉转杯纺起绒纱纺纱工艺初探

对用于PU革基布的T／C65／35 58tex转杯纺起绒纱的纺纱工艺进行了优选。对捻度、喂入条定量、纹杯和分梳辊转速、 分梳辊针布型号等关键工艺对成纱质量的影响作了大量试验,并对试验结果进行了理论分析和探讨。优化后的纺纱工艺保证了起绒纱纱疵少,起绒效果好。     

转杯纺质量控制体会

为提高转杯纱质量,对转杯纺质量控制的有关问题进行了分析和论述。指出：转杯纱的质量控制首先要严格掌握质量标准,要以满足客户要求为最终标准。转杯纱质量控制应贯穿于产品生产全过程。要合理使用纤维原料,前纺工艺加强除杂、除微尘,注意短绒含量,改善纤维分离度。应特别关注转杯、分梳辊、假捻盘、阻捻器等关键专件的选配并合理配置工艺。     

R40型转杯纺纱机关键器材的优选配置

为了生产高质量的转杯纺纱线,对立达公司的短流程R40转杯纺生产线的关键纺纱器材,如：阻捻头、假捻器、纺杯和分梳辊等进行了优选。试验结果显示：表面螺旋结构的KS型阻捻头成纱奈干好,毛羽少,强力高;KSNX型阻捻头成纱手感柔软,适纺针织纱;表面带沟槽的K4K型阻捻头成纱蓬松,适纺牛仔布用纱;40-XTC-BD型纺杯适纺83．3tex等粗号纱;33-XT-BD型纺杯适纺29tex等较细号纱;另外,用B20ON-64型分梳辊纺纯棉29tex纱,以8kr／min,排杂补风全关为宜;纺83．3tex补风口开1/2为宜。最后指出,应结合客户要求选择关键纺纱器材和工艺参数才能纺好转杯纱。     

TQF268型转杯纺纱机纺制涤棉混纺纱的实践

为了在转杯纺纱机上顺利纺制涤棉起绒纱,提高成纱质量,通过纺纱试验,对纺纱工艺进行了优化配置.通过在转杯纺工序优选纺杯型号、分梳辊型号以及合理配置纺杯速度、分梳辊速度、工艺负压等参数,使T/C 65/35 59.2 tex转杯纱成纱质量得到保证.     

转杯纺纱用器材的发展与讨论

介绍转杯纺纱的发展历程,重点阐述了转杯纺纺纱器材的3大核心器材,即转杯、假捻盘和分梳辊的技术进步。说明转杯纺纱机的发展史就是转杯纺纱用器材的发展史,纺纱原理、设备、器材和工艺相辅相成;产、学、研、用4方要紧密合作,发挥各自优势,针对新型纤维的特性细致分析,才能开发出相应器材,纺出高质量纱线,促进行业技术进步。     

转杯纺纱线单强CV值影响因素分析

分析了不同用途气流纱的单强Gy值指标，原料配比、纱号与单强Cy值的关系，转杯纺纱机分梳辊、纺杯等关键工艺部件对单强Gy值的影响。单强Gy值与质量Gy值、条干Gy值、粗细节、纱疵密切相关，是衡量气流纱质量的重要指标；生产中应从工艺、设备、操作运转方面改善转杯纱内外在质量，降低单强CV值。     

转杯针织纱减少棉结杂质的工艺管理措施

为了减少转杯针织纱的棉结杂质,根据系统工程棉纺工艺学的理论,针对转杯纺原料的特点,在纺纱各工序进行了工艺参数的优化配置:清梳合理工艺隔距,加强开松和转移,充分梳理,减少纤维损伤,增加落棉含杂率,减少棉结杂质;转杯纺优化纺杯、分梳辊转速,合理选择负压;加强设备、操作及温湿度管理,从而减少了成纱的棉结和杂质.     

Investigation of the concurrent sliver-opening mechanism and unveiling features of the new dual-feed rotor spinning concept

To examine the effectiveness of the new dual-feed rotor spinning system, we performed a set of experiments to assess the influence of the opening roller type, sliver feed method, and direction of fiber feeding into the rotor on the quality of a polyester/cotton blend yarn. Six yarn samples of 58tex consisting of 55/45 polyester/cotton were prepared in this study. Their respective properties, such as tenacity, elongation at break, mass irregularity, hairiness, thick (+35%) and thin (?30%) places were tested and statistically analyzed using Minitab. ANOVA analysis showed that the tested yarn quality properties were statistically significant among groups except for thick places (+35%). Tukey’s post hoc test based on the honest significant difference was performed to determine the implication of results within groups at the value of α?=?0.05. The dual-feed blend yarn (PCLR) spun with opening roller type OK37 on the left and OK40 on the right exhibited superior yarn quality characteristics compared to other samples. Dually carded slivers yielded better yarn quality compared to simultaneously carded ones. The combing direction did not produce a clear trend on the quality of yarns. The study provides important insights into the potential of the dual-feed rotor spinning concept.     

亚麻/棉转杯纺混纺纱的生产实践

以58.3 tex亚麻/棉65/35转杯纺混纺纱为例,根据原料的性能特点,分析纺纱工艺配置情况,合理调节前纺工艺,控制好车间温湿度,制备出合乎要求的熟条;确定转杯纺关键纺机器材的纺杯速度、分梳辊速度、工艺风压等合理的工艺参数.实践表明,这些工艺参数对亚麻/棉混纺纱的性能有较大的影响,在生产中应重点控制.     

细纱前上罗拉前冲对成纱质量的改善

在细特纱的纺纱过程中，为了减少细纱断头，提高成纱质量，对细纱牵伸部件及工艺配置进行了分析，发现将前上罗拉加大一定前冲量后能减小细纱无捻三角区，并在FAS06型细纱机上进行了前上罗拉前冲工艺试验，结果表明，合理选用前冲量能优化纺纱工艺，对降低细纱断头，改善成纱质量有明显效果。     

Dual-feed rotor spinning of cotton fiber: trash separation and yarn properties

In all industrial rotor spinning machines, opening of the fibers is performed by an opening roller, in which sliver is fed from a single point. Increasing number of feed rollers from one to two may improve fiber opening and trash ejection by two-step loading in opening zone of the opening roller. This may improve fiber orientation and blending in the produced yarn and yarn properties. In earlier two sliver feed laboratory systems (dual-feed), it was not possible to work with cotton fiber, because the trash removal zone was used for feeding a second sliver. The aim of this study was to design a system that can take advantage of dual-feed and also extract the trash. The experimental rig was a modified RU04 rotor spinning unit of Rieter in which two separate sliver feed systems were utilized. Raw material used and yarn count were cotton and 29 tex, respectively. Extracted trash and yarn properties produced with dual-feed system were compared with that of the original unit. Yarn properties tested were tenacity, extension, work of rupture, mass irregularity and imperfections, hairiness, and abrasion resistance. Test results were analyzed by ANOVA for any difference between the means and Duncan for ranking. Tenacity, strain at peak, work of rupture, and yarn abrasion of the dual-feed yarn increased, and their mass irregularity and imperfections decreased in comparison to that of the conventional yarn. According to the test results, it was concluded that, increasing number of feed rollers on the opening roller from one to two has improved the yarn properties and trash separation of cotton fiber is possible and comparable to the original single feed.     

F1603型转杯纺纱机纺制涤棉起绒纬纱的实践

利用F1603型转杯纺纱机纺制T/C 65/35 58.3 tex PU革起纬布纬纱,为了稳定提高成纱质量,对原料的选配及末并定量、并合道数、纺杯速度与分梳辊速度等工艺进行了试验优选,并指出了设备管理和运转操作方面应注意的问题.