Combined Yarn Research Articles

Structure and Properties of Double-Filament Tri-Component Combined Yarn

Manufacturing process of combined yarn with different filament size and cotton roving has been discussed. It shows that filament feeding point has some effect on combined yarn structure and yarn properties. If the filaments are fed from different sides of the cotton strand, they usually wrap the strand in parallel. If the filaments are fed from the same side of the strand, they wrap the strand crossed more often. Filament feeding point has an effect on yarn hairiness while it affects yarn breaking strength, yarn breaking elongation and abrasion resistance slightly. Yarn property weight is determined by subjective empowerment and Borda method is used to analyze yarn property. It has proved that if the filaments are fed from different sides of the cotton strand, the filament-roving space is set at 4mm respectively; the combined yarn shows the best.

Development of Multi-Layer Fabric on a Flat Knitting Machine

The loop transfer technique was used to develop the a splitable multi layer knit fabric on a computerized multi gauge flat knitting machine. The fabric consists of three layers: inner-single jersey, middle-1×1 purl and, outer-single jersey. By varying the loop length the multi layer knit fabric samples were produced, namely CCC-1, CCC-2 and CCC-3. The above multi layer fabrics were knitted using 24s Ne cotton of combined yarn feed in feeders 3, 4, and 4 respectively. The influence of loop length on wpc, cpc and tightness factor was studied using linear regression. The water vapor and air permeability properties of the produced multi layer knit fabrics were studied using ANOVA. The change of raw material in three individual layers could be useful for the production of fabric for functional, technical, and industrial applications.

Performance Testing for Bamboo Charcoal Knitting Fabrics of Different Structures

In this paper, the eco combination yarns of bamboo carbon fiber and cotton fiber which have the same yarn count are used to knit four structures by computerized flat knitting machine such as plain jersey, half cardigan stitch, milano rib stitch and half-milano rib stitch. Through testing, comparing and analyzing on drape, air permeability, moisture absorption and bursting strength, the results show that the plain jersey knitted products are the best.

Technology for production of combined conductive yarn of high linear density for carpets

Twist from 95 to 107 tw./m and microwire tension of 20 to 26 cN must be used for manufacturing combined conductive yarn. The decrease in the resistivity of the yarn and the strength level allows preventing accumulation of static electricity on the surface of carpets.

5. Applications of cellulose acetate 5.1 Cellulose acetate in textile application

AbstractThe first cellulose acetate fiber, commonly referred to as acetate, was produced in Europe in 1918 and on a large scale in the United States of America in 1924 making acetate the second man‐made fiber to be produced.1 The usage of acetate worldwide peaked at a consumption of approximately 400 kilotons in the early 1970's.2 In the past three decades the use of acetate fiber has declined as fabric manufacturers moved to lower costs manmade fibers such as polyester. Manufacturers of acetate have worked aggressively to reduce their cost while maintaining product quality. These efforts have had some reward, leading to acetate's categorization as a niche fiber. As such, cellulose acetate represents less than one percent of the world's total fiber consumption as compared to cotton at over a third3 of the world's consumption and polyester at around a fourth.4Acetate has been used and continues to be used in many different textile applications because of its attributes and good textile processing performance. It is used in woven fabrics, knits and braids. It is found in multiple applications including medical gauze, ribbons, coffin linings, home furnishings, woven velvets, tricot knits, men's linings, circular knits, woven satins, woven fashion, women's linings. It is found in a variety of deniers, lusters, colors, finishes, compactions types and package sizes. It is often blended with other fibers to make combination yarns.

Bispectrum Evaluation of Combination and Blend Yarns

The bispectra of combination and blend yarns made on a spun silk spinning system are discussed, along with bispectra of mathematically idealized combination yarns. For comparison, the bispectra of a random combination yarn and two types of pseudorandom combination yarns generated by a computer simulation are calculated. Furthermore, the effect of periodic yarn irregularity on the bispectrum is estimated.

New Technique to Produce a Cotton/Polyester Blend Yarn with Improved Strength

This paper describes a newly developed, relatively simple but effective technique of producing a novel pseudo-composite cotton-rich staple blend yarn with improved tensile properties. The spacing between cotton and polyester rovings drafted simultaneously on a ring-spinning frame affects yarn structure, resulting in significantly stronger yarns than those produced by drafting the same two rovings together. The new composite or combination yarns may be useful in developing relatively stronger cotton-rich materials suitable for a variety of finishes and end uses.

Kompalen-D combined yarn

Technological features of Komplaen-D combined acetate-polyamide yarn having linear densisities of 10, 11.7, 14.3, and 16 tex and twists of 136 and 200 twists/m have been studied, and technology for their manufacture has been developed.

Preparation And elemental analysis of ancient fibers

Fabrics recovered from archaeological sites often are so badly degraded that fiber identification based on physical morphology is difficult. Although diagenetic changes may be viewed as destructive to factors necessary for the discernment of fiber information, changes occurring during any stage of a fiber's lifetime leave a record within the fiber's chemical and physical structure. These alterations may offer valuable clues to understanding the conditions of the fiber's growth, fiber preparation and fabric processing technology and conditions of burial or long term storage (1).Energy dispersive spectrometry has been reported to be suitable for determination of mordant treatment on historic fibers (2,3) and has been used to characterize metal wrapping of combination yarns (4,5). In this study, a technique is developed which provides fractured cross sections of fibers for x-ray analysis and elemental mapping. In addition, backscattered electron imaging (BSI) and energy dispersive x-ray microanalysis (EDS) are utilized to correlate elements to their distribution in fibers.