critical evaluation of the relationship between fiber quality parameters and hairiness of cotton yarns

a certain level of hairiness in yarn is generally acknowledged as unavoidable because of the practical limitations of mechanical processing machines. spinners therefore interested to know the effect of fiber properties on yarn hairiness when selecting suitable raw materials. the literature on parameters such as fiber fineness and short fi..

model to estimate the breaking elongation of high twist ring spun cotton yarns. part i. derivation of the model for yarns from single cotton varieties

a mathematical model has been evolved to estimate the breaking elongation of highly twisted (3 $less than$ tm $less than$ 6) singles ring spun cotton yarns from fiber characteristics. results show that the accuracy of estimation of the proposed model is very high. the model is applicable to both carded and combed cottons (author abstract)..

influence of cotton fiber properties on yarn hairiness

to study the influence of cotton fiber properties on ring and rotor spun yarn hairiness, the authors used three different instruments to measure the same yarn series: the digital itqt hairiness tester, the shirley hairiness meter, and the new zweigle g 565 instrument. based on experimental data, the following conclusions are drawn: for ri..

untwisting behavior of spun yarns under a constant load

to examine spun yarn untwisting at a constant load, we developed an apparatus for evaluation of untwisting behavior. spun yarn (cotton 100, 40 ne, single yarn) and finished yarn were tested the results demonstrated each of the different behaviors. we think that these various behaviors were caused by process bleaching, dyeing, and sizing. ..

global excesses in primary textiles

this paper discusses the global cotton-yarn and end-use fiber production over capacity and traces the origins of the uncomfortable situation into which we have manoeuvred ourselves and to see what conclusions we can draw from the findings

preparation of kompalen-p yarn-like combined triacetate-polyamide thread

technological features are studied, and manufacturing technology is developed for kompalen-p combined yarn-like triacetate-poplyamide thread of linear density 17.3, 19.5, and 23.5 tex. it is shown that komalen-p yarns can be used in fabrics as the fill and in tricotage mixed with cotton yarn, cotton-lavsan, or viscose yarn. 3 refs

comparison of yarn tenacity data obtained using the uster tensorapid, dynamat ii, and scott skein testers

high speed yarn tensile testing machines increase production of yarn tensile data, but no comparisons with data from older, slow speed testing machines have been successful in determining whether these machines produce the same results. this work compares yarn tenacity data from three different machines. a family of five ring spun yarn si..

air-jet texturing of spun cotton yarns for improved comfort part ii. texturability of carded spun yarns compared to combed spun yarns

we have studied the importance of yarn structural variants such as fiber packing density, fiber fineness and length distribution, mean fiber extent, and migration parameters in deciding the bulking potential of a spun yarn structure with air-jet texturing. three variants of carded yarns, combed yarns, and yarns made from combed sliver whi..

yarn attrition and hairiness: the influence of the loop sense on self-friction test results

when the zweigle g555 staff tester is used to measure the attrition produced by yarn self friction there are two ways in which the yarn loop may be formed: the so called 'right' and 'left' directions. according to the maker of the apparatus, if the yarn twist sense is z, the 'right' loop produces a more drastic effect than the 'left' loop..

twist and linear density coefficient of variation-length curves of polyester/cotton yarns spun by different processes

the coefficients of variation-length curves for yarn twist and linear density have been determined for polyester/cotton yarns spun by ring, rotor, and friction processes as a function of blend proportion, yarn twist, and yarn linear density. the influence of each of these parameters on twist and linear density irregularity is described ac..