聚乳酸玉米纤维针织物结构设计与生产实践

文章依据聚乳酸玉米纤维的性能分析,设计开发了纬编平针添纱组织、纬编单面集圈组织、纬编空气层组织、纬编双面集圈组织、经编纬面添纱组织等针织产品,提出了聚乳酸玉米纤维针织产品生产中易出现的问题及解决办法,为聚乳酸玉米纤维针织产品的研究开发生产提供参考。     

用纬编单面添纱组织开发热湿舒适性针织面料的途径

介绍了基于纤维传湿关系 ,利用纬编单面添纱组织特点开发具有热湿舒适性针织面料的几个途径     

用纬编单面添纱组织开发热湿舒适性针织面途径

介绍了基于纤维传湿关系，利用纬编单面添纱组织特点开发具有热湿舒适性针织面料的几个途径。     

聚乳酸纤维纬编针织面料性能的研究

通过测试5种聚乳酸纤维纬编针织面料的透气、保暖及芯吸性能,探讨聚乳酸纤维纬编针织面料的服用性能.结果表明,聚乳酸纤维纬编针织面料具有良好的透气性及保暖性,但不存在芯吸性能.     

纬编针织脱圈走纱分析与防走纱工艺研究

通过对纬编针织物脱圈走纱的原因及过程的分析,提出了几种可行的防走纱纬编组织结构的工艺设计,如集圈结构、架空添纱、针步转移、锁纬结构、固定线圈接触点等。并指出在服装加工过程中预防脱圈走纱的有效措施,如注意面料的质感、缝纫机件的使用和调节、坯布的回潮率和缝纫车间温湿度的控制等。     

聚乳酸纤维针织天鹅绒的研制探讨

聚乳酸纤维针织天鹅绒是以聚乳酸纤维和纯棉针织纱作为主要原料,经过织造和染整加工而成的纬编针织天鹅绒面料。本文重点介绍了该产品特点和用途、产品的设计方案、生产工艺流程及技术关键。     

针织纬编添纱工艺理论与实践研究综述

总结分析了近几十年来在针织纬编添纱工艺理论和实践研究方面取得的成果。指出现代纬编添纱技术与传统添纱工艺理论之间的差异,提出进一步研究的方向。     

利用纬编单面添纱组织开发热湿舒适性针织面料

根据热湿舒适理论，利用纬编单面添纱组织的特性，开发具有热湿舒适性的针织面料，具有效果显著，成本低的特点。     

PLA针织天鹅绒的设计与研制

采用聚乳酸(PLA)纤维作地纱、纯棉纱作面纱,在纬编大圆机上研制出PLA针织天鹅绒产品。通过对PLA纤维特性的分析,给出了该天鹅绒产品的编织工艺要点、染整工艺流程及工艺。编织要点:面纱的喂纱张力为4￣7g,地纱为5￣8g;采用直垫式垫纱。PLA纤维的染色用分散染料,工艺为:pH值4.5￣5.5,温度100￣110℃,时间45min。     

车用装饰面料的设计与开发

在针织平针组织的基础上,利用成圈和集圈进行不同规律组合,设计出几何图案,并对织针、三角排列方式及穿纱方式进行上机工艺设计,开发适合车用的纬编单面集圈装饰面料。     

Air permeability and bursting strength of weft-knitted fabrics from glass yarn. Part II: knit architecture effect

In this study; the effects of loop, skip, and tuck stitch types, and weft-inlay yarn, on air permeability and bursting strength of weft-knitted fabrics from glass yarn were revealed. Due to clockwise rotation of wales and their arrangement being one on top of the other, besides the dramatic shortening of fabrics after their removal from the machine; fabrics with tuck stitches exhibited the highest stitch density, fiber content, and the shortest loop length. This caused the lowest air permeability and the highest bursting strength. Contrary to expectations, weft-inlay yarn did not contribute to bursting strength as much as tuck stitch did. An overall negative correlation between air permeability and bursting strength was disrupted by structures with tuck stitches. While tuck stitches from cotton yarn increased air permeability and decreased bursting strength in previous studies; this study indicated that tuck stitches from glass yarn decreased air permeability and increased bursting strength.     

The effect of knit structures with tuck stitches on fabric properties and pilling resistance

The patterns of knit fabrics are designed by loops, tuck stitches, and float stitches and their combinations. The tuck stitch has important influences on fabric properties. It increases the fabric’s weight, thickness, and width and makes the fabric more porous than other fabrics. In this study, to determine the effects of knit structures which are made from the same cotton yarn with tuck stitches on fabric properties and pilling resistance, circular knit fabrics with different locations and number of tuck stitches were produced and dyed under the same conditions. In the evaluation process of the results, graphs were drawn and variance analyses were performed. At the end of the study, important findings were determined. The number and location of the tuck stitches and stitch length are effective factors on the structural, physical properties and the pilling resistance of knit fabrics. The fabrics with tuck stitches have much higher porosity, weight, and thickness compared to single jersey fabric. The dyeing process increases fabric weight. Single jersey has the lowest pilling resistance in comparison to fabrics having tuck stitches. The fabrics having more pores and larger pores show higher resistance to pilling. Dyeing and finishing processes decreased the pilling resistance of fabrics.     

Ultraviolet protection of weft-knitted fabrics

Increased incidence of skin cancers worldwide has expedited the development and research of ultraviolet (UV)-protective clothing. Clothing acting as a ‘second skin’ for human beings provides a more durable protection against harmful UV radiation than sunscreen creams. The market value of UV-protective clothing is worth considering. This paper will provide important information to textile designers, manufacturers, and consumers about the production and selection of UV-protective knitwear. Although various factors that affect UV protection of fabrics have been studied by researchers, most of them focused on woven fabrics and chemical approaches for improving UV protection. Knitwear in the form of daily wear is an indispensable form of clothing in summer but there has been limited research concerning the UV-protective properties of weft-knitted fabrics to date, in particular the influence of fabric construction on UV protection factor (UPF) and fabric structural properties. This issue of Textile Progress reviews the major factors that affect UV protection by fabrics, including fibre types, yarn characteristics, fabric construction, colouration, chemical additives, wetness (rather than just the moisture absorbed into the fibres), the stretching that may occur in clothing, and the effects of laundering. Methods for evaluating the UV-protective ability of fabrics are also addressed. There is also an attempt to fill a research gap by investigating the influence of different knitted structures on a fabric's UPF, through incorporation of the three major stitch types in weft-knitted fabric constructions, namely the knit, tuck, and miss stitches.     

羊毛畦编针织物尺寸特性分析

通过实验的方法,研究了横机编织的罗纹、半畦编和畦编羊毛针织物的尺寸特性,对3种织物的线圈长度、纵横向水洗收缩率、纵密及横密等各尺寸特性进行了分析与比较,实验得出,由于集圈线圈的存在,半畦编和畦编针织物的尺寸特性显著不同于罗纹针织物.通过建立尺寸变化率公式,计算出畦编织物与罗纹织物尺寸参数间的关系,可用于工厂实际生产设计时参考.     

纬编针织物CAD设计模型的建立与实现

为满足市场上对各类纬编产品的设计需求,基于CAD技术对纬编针织物设计系统的开发作进一步研究。结合组织设计特点分别建立编织图、意匠图数学模型,采用二维、三维矩阵模型来表示相应的数据信息。除此之外,针对织针排列图、三角配置图的数学表达以及花色意匠图到结构意匠图的转换算法进行说明,并详细描述其具体的实现过程。在此理论基础上,利用Visual C++设计平台开发了CKCAD1.0纬编针织物设计系统,实现了工艺设计的功能,使得纬编产品的设计更为直观、快速、准确。     

Utilization of the yarn pullout test in estimation of the reserved energy of rib knitted fabrics

The yarn pullout test is a prevailing and particular method to evaluate the effects of yarn properties and the structural characteristics of the fabric on the fabric mechanical performance. In this research, a theoretical model of yarn pull out is presented to determine the reserved energy of weft-knitted fabrics with rib 1 × 1 structure. This model is based on the fabric dimensional properties, i.e. stitch length, wale density, yarn diameter and contact angle of yarns. In order to appraise the proposed model, five different double jersey weft-knitted fabrics with rib 1 × 1 structure were produced and exposed to pullout test. Comparison between deviations of theoretical results from experimental results demonstrates that the presented theoretical model exhibits a rational estimation of the reserved energy in these fabrics.     

线圈长度对针织物顶破和穿刺性能的影响

文章研究了纬平针和双面集圈组织的顶破强力和准静态抗穿刺性能。实验结果显示:顶破强力和穿刺力均随着针织物线圈长度的减小而增大,两者有显著的线性相关;织物组织结构的差异影响织物的顶破和穿刺性能。     

14—THE WET-RELAXED DIMENSIONS OF PLAIN-KNITTED FABRICS

Various states of relaxation of the plain weft-knitted structure are discussed in relation to fabric dimensions. An experimental investigation of dimensions in the wet-relaxed state shows that, in addition lo being dependent on the stitch length, these are also a function of the yarn diameter. A discussion of the possible causes of this effect concludes that it is the result of a combination of various yarn properties.     

The effect of different knitted fabrics’ structures on the moisture transport properties

In this study, fabrics with different plain, tuck and float stitch combinations in three different tightness levels as tight, medium and loose are produced from combed ring spun cotton yarn. It is aimed at determining the effect of fabric structure on liquid absorption, transport and permeability properties, which are important factors in the people’s perception of wear comfort. The air permeability, wicking ability and moisture management measurements of the produced fabrics are made. It is determined that the increase in the fabric tightness decreases the air permeability and increases the wicking ability especially in 60?min measurements. The fabric tightness has also different effects on different knitting types in terms of moisture management properties. It is observed that structures with float stitches show high wicking ability and moisture management properties in terms of plain, tuck and float stitches combinations.