MEASURING AND MONITORING DEVICES FOR THE WEAVING INDUSTRY.

Enka Tecnica makes equipment for measuring and monitoring yarns during weaving and weaving preparation. The Weave Master is a yarn tension monitor ideal for such discontinuous processes as shedding, weft insertion, and beat-up. The device has been used successfully on both high-speed and low-speed looms. The Tenstec is a small, portable y..

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WEAVING AND FABRIC PRODUCTION -- ITMA 1991 PREVIEW

Camber International will show a comprehensive range of circular knitting machines for the production of continuous fabrics. Dornier will feature rapier and air jet looms. Karl Mayer will highlight improvements to existing warp knitting machinery, including a pattern control system. Nuovo Pignone will exhibit high performance looms. Somet..

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PROGRAMMING AND ARCHIVING SYSTEM FOR THE WEAVING MILL.

Sulzer Rueti's PAS/2 is a programming and archiving system for setting, monitoring, and optimizing the performance of looms. The PAS/2 system consists of five modules: style management, a raw material and components library, machine management, weaving order management, and service support. The system has context sensitive help, which aut..

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COMPUTER-AIDED OPTIMIZATION OF A TEXTILE DESIGN.

A computer was used to generate geometric patterns in black on a white ground with varying cover factors. Males and females in different age and income group subjectively graded these samples for their aesthetic appeal. The distribution of cover factors selected by the graders indicated a peak at about 55 percent. Two minor peaks at about..

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STUDIES ON STEAM CONDITIONING OF HIGH TWIST WEFT YARNS

Steam conditioning is an essential requirement for the production of high twist yarns, which are susceptible to snarling. Steam conditioning can also improve the performance of weft yarns during weaving. The steam conditioning procedures followed by four Indian mills were studied. Data was collected on the type of conditioning machine, va..

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UV-Visible System for Identifying Dye Mixtures in the Environment

Researchers used a mix-match algorithm correlating ultraviolet (UV) visible spectra with the library spectra of pure dyes in ionized water to identify two, three, and five component mixtures of food and fabric dyes in water. The algorithm performs principal component regression (PCR) on a library of spectra of pure components, treating ea..

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High-frequency welding of an industrial thermoplastic polyurethane elastomer-coated fabric

The high frequency (27.12 MHZ) weldability of a thermoplastic polyurethane elastomer coated fabric was investigated after determination of its dielectric properties. It was shown that at 27.12 MHz, maximum heating occurred at 50'C, Subsequent tests were thus carried out at this temperature. Temperature needs to be measured continuously du..

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Napping of woollen fabrics (Italian) (La garzatura dei tessuti di lana)

The article describes all aspects of the gigging or napping of woollen fabrics with particular reference to Italian expertise and machinery. Gigging or napping is the process of brushing the fabric surface with small hooks or wires so as to produce a nap. This was originally done using teasel heads and historical records show that its was..

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Heat Transfer through Clothing Assemblies in Windy Conditions

Researchers developed a theoretical model for air penetration through apparel assemblies and wind induced heat transfer and applied the model to determine the effect of wind velocity, outer fabric permeability, thickness of fiber battings, and human body dimensions on the distribution of effective apparel insulation. Increasing wind veloc..

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Modelling and simulation systems for 3D complicated woven structures

This paper, delivered at the recent Huddersfield University World Textile Congress, describes how multi-layer and orthogonal 3D woven structures can be parameterised, and solid models developed in order to assist the design and manufacture of these structures and to provide models for geometric and mechanical analysis. Two major types of ..

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