More about fibre friction and its measurements

Unfortunately, the classical empirical friction laws do not hold true for fibrous and viscoelastic materials comprising most of the textile fibres. In the second half of the twentieth century, fibre surfaces have been studied by many distinguished scientists who were able to complete numerous researches for the frictional characteristics of different types of fibres. Most of the researchers have aimed to develop a new test method and a test device that can be used to measure the frictional characteristics of fibres quickly, accurately and easily in their studies. Unfortunately, there is not a standard test method or a test device for the measurement of textile fibres' friction properties. For today's competitive marketing, the instrument for fibre testing must be very fast and accurate; otherwise, it will not be useful for commercial purposes. For example, hundreds of thousands of cotton bales should be tested within a very short period of time in terms of the length, colour and trash content of the cotton bales. Without having the data describing the properties of cotton fibres, cotton bales cannot be sold commercially in most of the countries. Therefore, it is an important factor that the fibre-testing instrument should be fast and accurate. Most of the properties of cotton fibres can be assessed by using a HVI fibre-testing instrument. In this review, the historical perspective of fibre friction studies has been demonstrated with the fibre friction measurement-testing devices. © 2009 The Textile Institute

Fiber fly generation of yarns during weaving using coarse filling yarns

Cotton Incorporation;Epro Development Limited;et al;Graham C (Hong Kong) Limited;Institute of Textiles and Clothing;TAL Apparel Limited2011 Spring Conference of the Fiber Society -- 23 May 2011 through 25 May 2011 -- -- 105818[No abstract available

A study of fly generation during raising

The study of fly generation during manufacturing has attracted the attention of many workers for decades. Among all fibre properties, the fibre length has the greatest effect on the amount of fly generated during the raising operation. Blending with a synthetic fibre type also reduces the fly generation due to an increase in the fibre mean length. Additionally, yarn moisture content, weaving pattern, fabric speed and input tension, and the number of rollers on the machine have a significant effect on the fly generation. Although there is no listed literature for fly prediction techniques, fibre and yarn properties, along with raising parameters, can be used for fibre-fly prediction during raising

Fiber Fly Generation of 100% Acrylic Yarns during Weaving

At textile mills, the fiber fly generation is a big concern almost at every stages of the production including knitting and weaving operations. Therefore, it is not a surprise that the fiber fly generation is still getting the attention of many workers for decades for either production efficiencies or for health reasons. In this study, the fiber fly generation during the blanket weaving has been studied. Among all of fiber properties, the fiber mean length has the greatest effects on the amount of the fiber fly generated during the weaving processes. Additionally, loom speed and package conicity have also a significant effect on the fiber fly generations during the weaving of blanket fabrics. It was found that the open end yarns with high twist coefficients were generating the minimum amount of the fiber fly during the weaving while the woolen yarns were giving the higher fiber fly generation during the blanket weaving processes. © 2010, SAGE Publications. All rights reserved

Fiber fly generation of yarns during warp preparation

[No abstract available

Fiber fly generation of 100% cotton yarns during warp preparation

The study of fiber fly generation during yarn preparation for either knitting or weaving operations has attracted the attention of many researchers for decades, due to either production inefficiencies or health reasons. Among all fiber properties, the fiber length and spinning types have the greatest effects on the amount of fiber fly generated during these processes. Additionally, unwinding speed, yarn tension and package conicity also have a significant effect on fiber fly generation during the warp beam preparation process. It was found that the vortex yarn was generating the minimum amount of fiber fly during warp preparation while the carded ring yarns were giving the maximum amount of fiber fly during these processes. © 2010 The Textile Institute

Evaluating the surface characteristics of fibres by compression method

During the recent years, there have been significant developments in methods and philosophies of fibre testing. While it is possible to measure the most of the properties of fibres, there are no standard test techniques for assessing the surface properties of fibres. This research aimed at establishing a technique, which can be routinely used to determine the frictional characteristics of textile fibres. The intention was to assess the frictional characteristics from measurements carried out on fibre 'bundles' rather than individual fibres since this should lead to information that is more meaningful in the prediction of processing performance and quality. The technique adapted is based on a sensitive compression test. Developing a technique for assessing the stick-slip characteristics of fibres can be used by cotton suppliers and spinners to provide data that can be used to optimise bale selection and to indicate fibres that may present processing difficulties. This will result in possible improvements in yarn and fabric quality at relatively low cost of fibre testing

Thermal comfort properties of woven fabrics made of hollow yarns

Agilent Technologies;Clemson University;et al.;Frankl and Thomas, Inc.;Johnson and Johnson;RenishawInternational Symposium on Fibers Interfacing the World 2013 -- 23 October 2013 through 25 October 2013 -- -- 121321[No abstract available

Analysis of Polymeric Braided Tubular Structures Intended for Medical Applications

In this study, monofilament tubular braided structures were fabricated and their performances were analyzed. The braided tubes are in three-dimensional form, made of polyester monofilaments intended for use in medical applications. This type of structure, called a stent, is used to open clogged arteries and veins by exerting radial forces. The radial force of a braided tube basically depends on three variables: braid angle, helical length, and braid diameter. The mandrel diameter influences the axial and radial forces obtained from the braid tube. In order to assure a stable structure, the braided fabrics were heat-set. Analysis of variances showed that heat-setting temperatures and heat-setting times of braided fabrics exhibited no significant effects in the range in which the tests were performed. © 2009, SAGE Publications. All rights reserved

The commingling effect on yarn stability and uniformity

Drexel University;Drexel University, College of Engineering;Drexel University, Materials Science and Engineering;Johnson and JohnsonFiber Society 2014 Fall Meeting and Technical Conference: Fibers for the Future -- 22 October 2014 through 24 October 2014 -- -- 121322[No abstract available