The Abrasion Characteristics of Cotton Yarns.

The greater attrition that occurs in machinery components when processing open end cotton yarns than when processing ring spun cotton yarns has led to the opinion that open end cotton yarns are more abrasive, but little published data support this opinion. These experiments investigated the effects of spinning technique on yarn abrasivene..

Performance of Lyocell and Lyocell Blend Yarns.

A study of lyocell fibers, blended yarns, and knit fabrics confirmed that lyocell yarn retains its strength when wet and has a wet tenacity higher than that of cotton. When wet, blended yarns also retained their high tenacity and other properties associated with lyocell fibers. Although the bursting strength of the lyocell knit fabrics wa..

The Effect of Fiber Denier, Spindle Spped, Ring Type, Treated balloon Control Rings and Pigtail Guides, and Single-Feed and Double-Feed Roving on Acrylic Ring Yarn Properties.

Productivity of acrylic yarn manufacturing has been limited because of problems that occur with increased spinning speeds, such as increased yarn hairiness, yarn fusion points, and ends down. Increased yarn hairiness is caused by friction created between the yarn and metal components of the ring frame. High spinning speeds cause tension l..

Filament Thread Monitoring On Line and At Line.

Conventional quality control for filament yarns remains piecemeal. Measurable dimensions are indirectly connected to processing features, dyeing uniformity, and reproducibility. Enka tecnica's online yarn testing devices measure the appropriate parameters along the entire length of the yarn dring manufacture. Fraytec online yarn scanners ..

New Potential in Downstream Processing of COM4 Yarns.

COM4 yarns spun using Rieter's ComforSpin process feature better cross wound package quality and permit substitution of single yarns for plied yarns while improving the running properties of knitting machines and the quality of knit fabrics. The ComforSpin process permits the manufacture of innovative soft ply yarns, reduces the use of si..

Effect of Fibre, Yarn, Machine on Fly Generation.

Researchers investigated the effects of uniformity index, fiber length, twist factor, yarn count, and spindle speed on the amount of fiber fly generated during the spinning of Dendera and Giza 76 cotton fibers. Statistical analyses evaluated the collected data. Reductions in fiber length and twist factor correlated with increases in fiber..

A study of the effect of preconditioning treatments on yarn properties

This report provides information on the effect of preconditioning treatments on yarn properties. Yarn samples were intentionally conditioned to moisture equilibrium in the standard atmosphere from both the wet-side and dry-side. The higher regain achieved at moisture equilibrium from the wet-side preconditioning treatment resulted in fibr..

Fast and reliable monitoring of the produced quality (German)

The Uster Qualiprofile of the Uster Tester 4-sx represents a new possibility of describing the charaxcteristics of a yarn. This quality profile provides a graphic representation of the test values, with a simultaneous color-coded classification and evaluation of the measured values, which are extremely easy to read and interpret. The prim..

Development of the reeling machines of three-dimensional type silk material 'Silk Shell' and the production (Japanese)

In order to apply for the silk to an interior field, the authors developed the three-dimensional type silk material (Silk Shell) made directly from cocoon filaments; one type is a cone or a pyramid state, the other is a spherical state. Reeling the cone or pyramid type 'Silk Shell', various complicated patterns of cocoon filaments were pr..

Tenacity-gauge length relationship through weaklink effect for yarns spun on various spinning systems with different fibres

The impact of weak-link effects on various yarns was studied in detail, using jute, cotton, viscose, nylon and polyester materials. Tenacity decreases with the increase in gauge length for each type of yarn irrespective of court spur and system employed. The effect was most pronounced for air-jet yarn and the least for rotor-spun yarn.