Wound Yarn Properties with Special Reference to Yarn Imperfections.

Researchers studied the occurrence of yarn imperfections after winding, focusing on winding tension levels and speeds and the effect of repeated winding. Data showed that tension during winding and speed of winding had little effect on the number of yarn imperfections. Repeated winding of ring spun yarn showed increased levels of yarn imp..

Oasys: Yarn Simulation Software.

For the cost effective manufacture of circular knit fabrics, the knitting Oasys yarn simulation system comprises two main components: a measuring device (and computer hardware) and software modules that permit customization to the user's operational requirements. The Knitting Oasys module is for single jersey fabrics whereas the Knitting ..

Solex Electronically Controlled Warp Let-Off System Successfully Introduced into Practice.

The Solex electronically controlled warp letoff system improves fabric quality and reduces labor costs. A sensor measures the tension of the warp yarns and a regulator and electronically controlled drive ensure continuous warp letoff. The electronically controlled warp letoff requires little maintenance. Willy Grob Limited designs and man..

Warp Yarns: Sizing versus Twisting.

Researchers compared the manufacturing costs, quality, and economic effects of sizing or twisting warp yarns. Results demonstrated that plied yarns cost approximately two times more than singles yarns. Beaming the warp contributed to extra costs. The final cost for twisting ranged from DM 3.6-9.4 per kilogram. Total sizing cost, including..

Polyester Fibre Length.

Researchers investigating the effect of fiber length and fiber strength on the tensile properties of yarn prepared yarn samples from polyester fibers of 1.0, 1.2, and 1.4 deniers with three staple lengths of 38, 44, and 51 millimeters. A series of tests determined the percentage increase in yarn tenacity, percentage increase in strength r..

Triple Yarn Blending.

Researchers investigating the properties of cotton, polyester, and rayon binary and triple blended yarns assessed yarn tenacity, extension at break, work of rupture, irregularity, and coefficient of friction. The tenacity of triple blended yarns with a count of 20/1 was lower than that of binary blended yarns of the same count when the pe..

Fundamentals of Melt Spinning and Synthetic Yarn Production.

Papers presented at a conference on the fundamentals of melt extrusion of manmade fibers and synthetic yarn manufacturing cover the manufacturing parameters, structure, and properties of nylon, polypropylene, and polyester fibers; basic fiber structure; yarn uniformity measurement and process development; optical brighteners for polyester..

Compact Yarn Structure: Cotton and para-Aramid

Compact yarn spinning machines manufacture yarns with greater uniformity than those manufactured on conventional ring spinning machines. Compact yarn spinning eliminates the spinning triangle, which causes yarn breaks and hairiness, and results in compact yarns that maintain their hand and volume. Good results have been obtained for manuf..

The Contribution of Fiber Friction to Yarn Quality

Researchers investigated the measurement of interfiber friction of cotton fibers and evaluated the correlation between fiber friction and yarn quality. A series of tests determined the fiber friction parameters, fiber properties, and yarn quality parameters of 47 upland cottons and their corresponding rotor and ring spun yarns. Statistica..

Yarn Neppiness -- Influence of Raw Material Quality and Process Technology.

Researchers investigating the effects of raw materials and processing on yarn neppiness used the Advanced Fiber Information System's Fibre Contamination Tester (FCT) module to determine the number and size of neps in cotton from 27 different regions, changes in the number of neps and nep size distribution during spinning, and the influenc..