柔洁纺粘胶强捻纱及其织物性能

为更好地探究柔洁纺技术对粘胶强捻纱质量和其机织物服用性能的影响,对相同工艺参数下粘胶强捻柔洁纺纱线与环锭纺纱线的均匀度、毛羽、单纱强力、捻缩率和表观结构进行测试对比,同时分析了相同规格柔洁纺和环锭纺粘胶强捻纱织物的强伸性、顶破性能、撕破性能、透气透湿性、吸湿性、柔软性和抗起毛起球性能。结果表明:柔洁纺粘胶强捻纱的毛羽少,条干均匀,强力高,捻缩率低;相比环锭纺粘胶强捻纱织物,柔洁纺粘胶强捻纱机织物的强伸性、顶破性能、撕破性能、透气透湿性、柔软性和抗起毛起球性显著提高,但吸湿性有所降低;柔洁纺粘胶强捻纱具有柔顺、整洁、牢固等特点,其机织物的综合服用性能优于环锭纺。     

Taguchi approach for analyzing the impact of varying degrees of cotton stickiness on ring-spun yarn quality

This research aimed to study the effect of cotton stickiness in quality of ring-spun yarn, the effect of blending sticky with nonsticky cotton, and optimize the spinning process based on Taguchi experiment design technique. Nine experiments were performed with respect to the L9 orthogonal design. Taguchi method was utilized to find the sequence of dominant factors contributing to ring-spun yarn quality. The study showed that a slight and nonsignificant, negative effect on the coefficient of variation in mass of carded sliver, first and second drawn sliver. When considering the roving frame, the coefficient of variation in mass of roving was significantly increased with the increase in the stickiness level and the percentage of sticky cotton in the blends. In actual spinning, the quality of ring-spun yarn is susceptible to stickiness. The study concluded that the dominant factor contributing to the most quality characteristics of ring-spun yarn was cotton stickiness level .The study showed that the optimum condition for the blending ratio of sticky with nonsticky cotton was found to be 25 and 75%, respectively. The results showed a considerable improvement in the signal-to-noise ratio as compared to the initial conditions.     

赛络菲尔轻薄型毛织物生产工艺的探讨

通过对赛络菲尔纺纱与普通环锭纺纱所用原料的分析比较,以及实际生产过程中纺纱、产品设计、织造和后整理的工艺探讨,提出了生产轻薄型毛织物的注意事项及相关解决措施。特别是通过织造、后整理过程的工厂实际经验总结出赛络菲尔轻薄型织物的生产工艺参数,并与传统同类产品从原料选择、工艺路线、成品风格及服用性能等方面作比较,认为轻薄型毛织物采用赛络菲尔纱线能节省资源,降低成本,特别是与同类纯毛产品相比,其织物的弹性、抗皱性、悬垂性、透气性及尺寸稳定性都有明显优势,具有较强的竞争力和市场前景。     

赛络菲尔轻薄型毛织物技术分析

通过对赛络菲尔纺纱与普通环锭纺纱所用原料的分析比较,以及实际生产过程中纺纱、产品设计、织造和后整理的工艺探讨,提出了生产轻薄型毛织物的注意事项及相关解决措施.特别是通过织造、后整理过程的工厂实际经验总结出赛络菲尔轻薄型织物的生产工艺参数,并与传统同类产品从原料选择、工艺路线、成品风格及服用性能等方面作比较,认为轻薄型毛织物采用赛络菲尔纱线能节省资源,降低成本,特别是与同类纯毛产品相比,其织物的弹性、抗皱性、悬垂性、透气性及尺寸稳定性都有明显优势,具有较强的竞争力和市场前景.     

针织用环锭改良纱性能分析

通过添加附加装置生产出一种针织用环锭改良纱,对其表面和截面形态结构进行分析,并对其纬平针织物的表面尺寸性能进行了初步评价。结果表明,该改良纱毛羽少,用其编织的纬平针织物布面歪斜现象明显好转。     

单须条分束纺纱线的结构特征

通过对单须条分束纺纱线的纵向和解捻后的外观特征以及截面形态的观察,讨论了纱线的结构,并与传统环锭纺纱线作了对比。结果表明,单须条分束纺纱线的外观毛羽相对传统环锭纱要少而短;纤维间缠绕紧密,整体外观较光滑密实;纤维间接触概率相对较高,这正好与其断裂强度和耐磨性高互为映证。与环锭纱相比,分束纺纱线的断裂强度和伸长率的变异系数较大,这与纱条不匀、粗细节和毛粒较多有关。     

环锭纱加捻及其拉伸强力

描述了环锭纱的拉伸断裂状态,分析了捻度在环锭纱中的作用和在拉伸负荷下环锭纱中纤维的受力情况,认为作用于纤维上的力因捻度的存在而发生分解转化使纱线提高承受拉伸负荷的能力,从而提高纱线拉伸断裂强力。对临界捻度提出了以下解释:临界捻度是纱线所受拉伸负荷在纱线轴心纤维上的拉伸分力等于纤维拉伸断裂强力,同时表层纤维上的剪切分力等于纤维剪切强力时的捻度。     

Effect of yarn extension on migration parameters of fibres in yarns

The present paper deals with a detailed study on the effect of progressive yarn extension on fibre migration. An image processing-based system to characterise and visualise the configuration of fibres in yarn in extended mode has been adopted. A detailed study has been reported on the changes in migration parameters, like mean fibre position (MFP), mean migration intensity (MMI) and root mean square deviation (RMSD), during axial extension of ring-spun yarn. It has been observed that the fibre migration parameters, like MFP, MMI and RSMD, are significantly affected by extension of ring-spun yarn and the trends are different for different levels of extension. It has been observed that the mean fibre position (MFP) increases slightly up to 4% of yarn extension and then decreases up to 8% extension but with a further increase of yarn extension up to 12%, the value of MFP slightly increases again. It has also been reported that with the increase of yarn extension the average RMSD and MMI.     

环锭纺纱和紧密纺纱罗纹针织物性能及其他物理性能

所有数据显示紧密纺纱织物的性能及其他物理参数优于精梳纱织物。相对于传统的环锭纺,紧密纺纱的毛羽指数低、强度高、条干均匀。紧密纺和环锭纺纱线结构上的差异明显地影响其织物性能、因此,尽管所有其他织物参数都相同,紧密纺纱生产的针织物相对于环锭纺纱针织物还是有着较短的线圈长度、较高的面密度、断裂强度、断裂伸长、顸破强力,以及更少的起毛起球。紧密纺纱线生产的针织物仅耐磨性稍差于环锭纺纱针织物．     

原棉中带纤维籽屑与成纱和布面质量的关系

通过对原棉中带纤维籽屑产生原因以及带纤维籽屑对成纱质量和布面外观质量影响的分析,提出了原棉和半制吕带纤维籽屑数量等级的划分标准,并将该等级划分标准与Uster97公报成纱棉结水平值相关联,这对在选配原棉时诮目的的控制带纤维籽屑数量,以保证成纱棉结控制在较低水平,提高成纱质量,减少疵布和低等级布有一定的作用。     

Impacts of yarn twist and staple length on UV protection of plain-knitted cotton fabrics

Yarn construction is an important attribute in knitting and end use performance of knitwear. Holistically, yarn construction affects fabric thickness and weight, and thereby influences ultraviolet (UV) protection of fabrics. Although impact of yarn construction on UV protection of fabrics is apparent, there appears to be limited research on it. This paper studied the UV protection of plain-knitted fabrics made of three types of ring-spun cotton yarns varying in yarn twist level and staple length. The results show that these yarn properties affect UV protection of fabrics differently before and after laundering. The modified low-twisted yarn possesses a bulky feature which creates a porous fabric structure for more ultraviolet radiation (UVR) transmission. The extra-long staple yarn offers uniform fabric appearance for higher UVR reflection. However, the regularity of yarn also restricts the fabric shrinkage in laundering and thus improvement in UV protection by shrinkage is not as obvious as that provided by the conventional short-staple yarn.     

错位纺纱对成纱性能的影响

采用错位纺纱技术在DSSP-01型数字式小样细纱机上纺制不同细度不同捻向的纯棉纱,通过纱线性能测试探讨错位方向对不同粗细和不同捻向纱线成纱性能的影响.实验结果表明,错位纺纱对成纱断裂强度和成纱条干有不同程度的改善,但是错位纱的断裂伸长率降低;由于吸棉笛管和导纱钩的不匹配,错位环锭纱毛羽显著增加.     

纤维横截面对环锭纱和喷气纱织物舒适性的影响

描述了纤维横截面形状对涤棉和涤粘环锭纱织物及喷气纱织物的影响.纱线结构在影响衣服舒适性的众多因素中扮演着重要角色.事实证明用喷气纱制成的面料在透气性、透湿性和吸湿性方面优于环锭纱面料.非圆形截面的涤纶纤维制成的面料具有较好的透气性、导湿性、吸湿性、绝热性和芯吸性.除了绝热性能外涤粘混纺面料的其他各项性能均比涤棉混纺面料好.     

A study on siro-, solo-, compact-, and conventional ring-spun yarns. Part II: yarn strength with relation to physical and structural properties of yarns

The strength of siro-, solo-, compact-, and conventional ring-spun yarns has been examined with reference to yarn migration parameters, spinning-in-coefficient, number of broken fibers, and yarn hairiness. The measured results are presented in the forms of diagrams and tables. Results reveal that at various levels of gage length and strain rate, siro-spun yarns exhibit the highest tenacity, followed by compact-spun yarns, solo-spun yarns, and conventional ring-spun yarns. Analysis of the results demonstrate that the higher tenacity values of siro-spun yarns can be attributed to the higher mean fiber position, higher migration factor, greater proportion of broken fibers, and lower hairiness. It is also found that the strength of yarns to a considerable extent is governed by yarn structure, gage length, and strain rate.     

新款花式纱线产品的设计与开发

介绍了新产品开发的两种思路：一是根据灵感来源设计开发花式纱线产品，同时还要考虑原料的合理选配、色彩的流行与搭配、纱线结构所反映的质感和理念、多种花式纱线的组合、织物组织选择以及产品的外观款式等因素；二是根据最终产品的要求，结合流行色、原料特性等要素，设计纱线结构。另外，还提出了纺纱工艺和纺纱过程中应注意的问题。     

利用紧密纺纱技术提高亚麻/棉混纺纱的质量

在自行改装的EJM128K型紧密纺细纱机上试纺了27．8tex亚麻／棉紧密纱和环锭纱,并对比了两种纱线的性能,分析研究了紧密纺纱技术在亚彬棉混纺中的可行性。结果证明,紧密纺纱技术适用于亚彬棉的混纺,能够有效提高成纱质量。     

棉纺环锭细纱机的赛络纺改造及成纱质量分析

分析了毛羽的成因及传统降低毛羽的方法,介绍了环锭细纱机的赛络纺改造方法和步骤,并对赛络纱与普通环锭纱成纱质量进行了比较,结果表明,对普通棉纺环锭设备进行赛络纺改造是一种适合目前我国现状,简单易行,具有良好经济效益的纺纱方法。     

Influence of yarn extension on longitudinal structural characteristics of fibres

A detailed study on the effect of progressive yarn extension on longitudinal structural characteristics of fibres has been reported in the present paper. An image processing-based system to characterise and visualise the configuration of fibres in yarn under extended mode has been adopted. A detailed study has been reported on the changes in longitudinal structural characteristics of fibres, such as fibre extent, fibre strain, straightening and slippage of fibres, fibre-pair-overlap length (FPO) and fibre-overlap index (FPI), during axial extension of ring-spun yarn. The actual length of fibre and the fibre extent in the yarn were found to be increased with the increase in yarn extension. With yarn extension from 0 to 4% the fibre strain in the yarn becomes moderate and further increase in yarn extension from 4 to 8% the fibre strain reduces, but with further increase in yarn extension of 8–12% the fibre strain again increases. It has also been observed that the fibre straightening percentage at different intervals of yarn extension is not the same and it decreases with the increase in yarn extension. The fibre slippage percentage is also not the same at different intervals of yarn extension percentage. It is found to be maximum at 4–8% and minimum at 0–4% yarn extension.     

用Dref 3摩擦纺多组分纬纱织造的织物的风格特征

研究分析了3种用Dref3摩擦纺多组分纬纱织造的平纹织物的风格特征。3种不同的纬纱是：芯皮均为粘纤;水溶性PVA作皮,粘胶无捻纱条作芯;PVA无捻纱条作芯,粘纤作皮。3种纱均在Dref3型摩擦纺机上按芯皮50／50比例纺成,经纱统一采用2合股纯棉纱线。将3种纱分别织成织物,然后用热水将PVA溶解去除。织物性能的测定结果：织物性能与组成织物的纱组分性能并不一致。无捻芯纱(溶掉PVA表皮)织物具有较高的拉伸强力、撕裂强力、折皱回复性和耐磨性;而空心纱(溶掉PVA作芯)织物具有丰满、蓬松的结构和良好的耐压缩性能。     

环锭纺竹节纱捻度分布及其对强力的影响

根据环锭纺竹节纱在加捻过程中的扭应力分布状况,采用杆件扭转模型,建立了竹节纱加捻扭转的数学模型。借助这一模型分析了竹节纱的4个参数(基纱直径、竹节直径、竹节间隔以及竹节长度)对捻度分布的影响。分析表明,竹节部分的捻度总小于设计捻度,主要受竹节直径与基纱直径比值的影响,比值越大,减少越明显;基纱部分的捻度总大于设计捻度,主要受竹节长度与竹节间隔比值的影响,比值越大,增加越明显。在捻度分布研究的基础上,分析了竹节纱捻度分布对强力的影响,并进行了实验验证。一般情况下,竹节部分的捻度下降对强力的影响不及竹节部分纱线截面内纤维根数增多的影响,因而竹节部分的纱线强力高于基纱部分的强力,竹节纱强力的大小与捻度和基纱捻度相同的普通纱强力极为接近。