The Interaction of Water with Fabrics.

To compare the water absorption and drying properties of manmade and natural fibers, researches evaluated the interaction between water and a range of fabrics. Fabrics made from both natural and manmade fibers absorbed water. A strong correlation occurred between fabric thickness and the amount of water the fabric absorbed. The time the f..

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Fabric Defects in Woven and Knitted Structures.

Categories of the causes of fabric defects include fiber; spinning, winding and warping; sizing, drawing-in, weaving, and pirn winding; loom setting; handling of material and operative; and wet processing defects. The major fiber related causes of fabric

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Combined Yarn Tensioning Device.

The HKS 3-1 and KS 3 tricot knitting machines can alternately process elastic and inelastic yarns by using a yarn tension control device. The system consists of a tubular tension bar carrier, yarn combs, profiled guides, and presser or tension springs mounted on hinged baseplates at the tension bar supports. The tension bar adjusts easily..

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RS (E) 4N-4 Universal Raschel Machine

Textilmaschinenfabrik Karl Mayer GmbH's new RS (E) 4N-4 universal raschel knitting machine operates at speeds of up to 1,900 rpm. Its main features include precise knitting movements, gentle yarn handling, adjustable lift of the compound needles, stitch forming guide bars changeable from four to three and two, and larger yarn feed-in zone..

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More Productivity for the Entire Textile Chain through High Flexibility Weaving.

High Flexible Weaving (HFW) increases productivity of the entire textile chain by reducing bottlenecks due to large lot sizes. Long throughput times are responsible for 27 percent of the total retail cost. HFW can prevent problems created by long throughput times such as retailers being forced to mark down articles and over stocked invent..

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Solution of Dynamics of Weaving Process and Building the Laboratory of Diagnostic and Measurements of Textiles Machines.

Researchers studied the behavior and interaction of a loom and its fabric. The loom represents a chain of nonsteadily moving kinematic and pneumatic blocs with relatively high frequencies of motion up to 100 hertz. The fabric represents a nonlinear viscoelastic medium that deforms itself in all three axes. Some parameters of the fabric po..

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Computer-Aided Technological Optimization of Jacquard Weaving Machines on the Basis of Thread Stress and Fabric Properties.

Researchers designed a computer program to analyze the tensile strength of warp yarn during weaving. The program yielded the tensile properties of the warp yarn as well as the statistical deviation during each stage of weaving. They used the results to derive such yarn properties as hairiness and clinging tendency. An expert system was de..

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Rotational Weaving Provides the Third Dimension.

A new weaving process developed in Germany weaves yarn in three dimensional patterns, allowing manufacturers to place yarns in optimal directions for reinforcing composite materials for specific end uses. The user can change the cross sectional profiles during operation without shutting down the machine. One hundred individually addressed..

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Air-Jet Weft Insertion.

A study examined the effects of loom speed, air jet time, air pressure in the main nozzle twist factor of the filling yarn, spinning method, and filling yarn count on the rate of twist loss of filling yarn during weft insertion on air jet looms. Increasing the loom speed reduced insertion time and decreased twist loss significantly. Short..

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Critical Evaluation of Let-Off Motion on Weaving Machines.

The ideal warp letoff motion maintains constant warp tension throughout the weaving process and turns the beam at a rate that maintains a constant length of warp sheet between the beam and cloth fell without any further adjustment. Researchers studied the

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