섬유공장의 공기 정화 및 조화시스템

TEXTURING OF THERMOPLASTIC YARNS. PART 12. THE HEAT TRANSFER PROCESS IN STEAM CONDENSATION HEATING.

A thermal model of yarn during texturing with condensation heating was developed to predict yarn temperature response. The internal conduction of the yarn was found to control the increase in yarn temperature; the increase hardly varied with the surface heat transfer coefficient. Cooling due to evaporation upon threadline emergence from t..

AIR JET TEXTURING OF TWISTED FILAMENT YARNS USING NEW JETS. PART 1. INFLUENCE OF TWIST LEVELS AND DIRECTION OF TWIST ON THE PROPERTIES OF AIR JET TEXTURED YARNS.

Tests were performed to evaluate two new air texturing jets, the Hemajet 100 and the Taslan XX, in opening up and bulking twisted filament yarns. These jets were able to texture continuous filament yarns twisted in both Z and S directions. Although the physical bulk of the textured yarn made from pre-twisted feeder yarn was lower than tha..

DEVELOPMENT OF FALSE TEXTURING PROCESS WITH SPECIAL REFERENCE TO POLYESTER FEEDER YARN.

Conventional and innovative false twist texturing processes, when applied to polyester yarns, are considered. In traditional texturing processes, fiber extrusion was followed by draw-twist, and then by texturing. The lag between extrusion and draw-twist was 12 to 24 hours. In new texturing processes, extrusion is followed immediately by s..

COMBINING CONDITIONING AND WAXING.

Morel's new conditioning unit combines conditioning and waxing processes for cheeses and cones. The device is available in semi-automatic or fully automatic versions. Single and twin tub models are also available. It is possible to condition 110 to 220 packages per hour, depending on the chosen model. Packages up to 6 inch traverse and 29..

Practical Problem Solving in the Spinning Mill.

Persistent processing problems have limited the use of nep yarns in the fine woollen and worsted sectors. Attempts to spin worsted nep yarns on a commercial scale have indicated that very fine, firm, and uniform neps must be incorporated in adequate density; nep admixture must occur on the roller card; combing processes should be eliminat..

Indian Cottons and Influence of Mech Processing on Nep Generation

Researchers at the South India Textile Research Association investigated the relationship between the tendency of cotton to form neps and fiber properties, identified the size of neps in sliver that needed to be controlled to produce yarns of desired nep level, and examined the effects of selected carding and combing process parameters on..

Unevenness of Yarns and Preparatory Materials. Part II: Control and Effect.

Researchers investigated measures to control yarn unevenness; the effect of fiber properties and process parameters on the evenness of sliver, roving, and yarn; and the influence of yarn unevenness on fabric properties. Steps to improve yarn evenness included the selection of appropriate raw materials to ensure a low short fiber content, ..

Computerization of Spin Plan of Yarn Manufacturing Mills.

Researchers developed a computer program to perform spin plan calculations. The study used various machine parameters and production capacities as input parameters and the number of machines and accessories required for a target production quantity as the output parameters of the spin plan calculations. The computer program allowed operat..

Fly and Fluff Generation in a Spinning Mill and Its Control

Fly and fluff generation, which is common during cotton spinning, can adversely affect yarn quality. Causes of fly liberation during spinning include inadequate moisture in cotton, high levels of short fibers in mixing, the tendency of cotton to stick, and choking of suction orifices in flyframes and ring spinning machines. Fluff accumula..