Yarn creels

A yarn creel has vertical ducts with openings through which air is direted towards the upper surfaces of yarn cones mounted on pins. Yarn drawn off the cones leaves the creel, the entrance ends of which are contained within a further duct. This duct has slots through which air is drawn from inside the creel. A fan re-circulates this air s..

AFK false-twist texturing machine with expanded capabilities

The new generation of false-twist texturing machines developed by Barmag AG of Remscheld-Lennep, Germany, is described, with particular reference to the standard and narrow versions of the AFK machine. The AFK has a high doff efficiency rate, due mainly to the fact that it uses only a few modules and is equipped with an intelligent contro..

Influence of texturing parameters on structural properties of microfiber polyester yarns

Structural properties of microfibre polyester yarn of around 0.5 and 1.0 dtex were investigated as a function of draw texturing variables, particularly draw ratio and first heater temperature. These properties were very sensitive to the parametrs studied. The draw ratio had less effect than the heater temperature on crystallinity, but had..

Influence of ply-twisting on the modification of surface characteristics of yarns

Ply-twisting, is an operation that changes and improves existing yarns by combining them together, and does not have the same influence on yarns of different structures. Taking into account the fact that this operation may also influence the characteristics of aesthetics and comfort of textile surfaces made of plied yarns, an attempt is m..

Composite yarns by a new technique. Ⅲ

This paper presents the final part of a study on the production of composite yarns by electrostatic filament charging methods. Results of spinning trials are reported and the study is concluded.

Fiber structure formation in high-speed melt spinning of sheath-dore type bicomponent fibers

High-speed melt spinning of sheath-core type bicomponent fibers was performed and the change of fiber structure with increasing take-up velocity was investigated. Four kinds of polymers, were selected and three sets of core/sheath combinations, were studied. The structure of each component in high-speed spun bicomponent fibers was analyze..

The influence of skin wrinkle on some attributes of skin and wool

Merino wethers(n=10) with extreme fold and wrinkle development of the skin were selected from a medium wool Merino flock to investigate whether the wool grown of the folds and wrinkles at the neck, midside and thigh differed from that grown beside the folds and wrinkles on adjacent non-wrinkled skin. The wool grown on the folds and wrinkl..

Analysis of Yarn Unevenness by Using a Digital-Signal-Processing Technique.

Researchers developed a microcomputer system for analyzing the unevenness of yarns that converts the analog signal from an Uster Tester into digital form and analyzes the signal using digital-signal-processing techniques. The system uses four statistical parameters to describe yarn unevenness: statistical average, probability-density func..

User-Friendly EBA-1 Yarn Feed System - Accurate and Easy to Operate.

Karl Mayer's EBA-1 yarn feed system is an electronic yarn draw-off mechanism for feeding warp sheets to the knitting elements of tricot and raschel machines. A wide control range eliminates adjustments to different yarn draw-off settings. The system operates with or without a sensing roll, depending on machine requirements. The system is ..

Polyester-Wool Yarn.

Researchers examined nine samples of wool and polyester fibers blended in three different percentage compositions and spun into three different linear densities to determine how blend ratio and yarn linear density influenced yarn properties. Although Uster percentage and the total number of imperfections decreased with an increase in yarn..