Three-dimensional weaving

A system is described to make three-dimensional shell fabrics using filament yarns and without the need for additional processing such as deep drawing (moulding), which has been adapted by SHAPE 3 Innovative Textiltechnik GmbH, of Germany. The materials are produced on electronically-con-trolled looms that incorporate additional shape-for..

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Computer aided design (CAD) in jacquard weaving

CAD systems have opened lots of new possiblities to designers and development departments, from higher creativity, possibility of fast incorporation of novelties and improvements into their work and higher flexbility for adaptation to constantly and quickly changing fashion trends and market demands, up to more rational and scensible use ..

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Determining the yarn parameters for describing the weft insertion behaviour in air-jet weaving

Comparison of the measurement of the weft insertion tie with yarn tensions determined at a test rig show that the forces transmitted in the mixing tube of a main jet have a decisive effect on the weft insertion behaviour of a yarn on air-jet looms, tests having been carried out on viscose rayon, cotton., cotton/polyester, polyester, plied..

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The Jacklam method

This article describes a new technology developed by French company NDK. Known as the Jacklam method and applied to shaft weaving the technology makes it possible to create an infinite number of geometric or figurative patterns on a dobby weaving machine Combining the flexibility of jacquard production with the advantages of shaft weaving..

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Twist redistribution of folded yarns in woven fabric-comparison of single and folded yarn fabrics

In the present study, the concept of twist redistribution of folded yarns in a woven fabric is introduced and the reasons for the twist redistribution of folded yarns have been given. Two pure cotton woven fabrics are compared. These two fabrics have similar industrial specifications, except that one is made of 100s/2 folded yarns, the ot..

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The influence of warp tension during weaving on fabric breaking force and breaking elongation

The influence of warp tension during weaving on fabric breaking strength and breaking elongation of the fabric woven from such a warp, has been investigated. Three different fabrics have been woven, with three different warp tensions applied, and their breaking strength, together with breaking elongation, have been tested. The fabrics hav..

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Computer aided design of technological documentation for production of fabrics

This paper describes an implemented software system called TeDo. which provides the weaving technologist with complete support for the preparation and design of technological documentation. Besides defining basic construction parameters of the fabric, forming weft and warp designs and weave patterns, and calculating the quantity of used m..

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Rapid warp change

The article presents the author's reflections on looms with a quick warp change facility with reference to the forthcoming ITMA-95 fair in Milan. He notes the time taken to change a loom from one operation to another and explains the concept of quick change: many of the operations involved take place away from the loom ensuring minimum po..

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Drape Simulation of Woven Fabric by Using the Finite-Element Method.

Because a fabric undergoes a large displacement and rotation during draping, researchers have considered the drape phenomenon to be a geometric nonlinear phenomenon. Researchers investigating fabric drape developed a nonlinear finite element code to simulate the three dimensional behavior of fabric. The formulation included geometric nonl..

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Measurement of Fibre Tuft Weight in an Air Duct Using Optical Methods.

Because web weight uniformity is critical in the manufacture of nonwoven fabrics, there is currently a great demand for an online noncontact continuous base weight monitoring system for nonwoven fabrics process lines. Such optical methods as the charge coupled device (CCD) line scan camera, and the laser scanner have proven effective in m..

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