Scanning electron microscopic study of elliptical travellers

The surface and inner core of elliptical travellers were examined by scanning electron microscopy. Traveller parameters, the nature of the coating, the grain size and the uniformity of the surface finish were studied. Optimal profile parameters were identified. Although the inner core material was the same for all travellers studied, the ..

링 정방공정 인자가 폴리에스테르 극세섬유 방적사 특성에 미치는 영향

링 정방기에서 실을 방적할 때 실과 섬유는 모두 다양한 하중하에 놓이게 된다. 기본적으로 이러한 하중은 기계의 금속 부품(로울러, 링, 트래블러, 앤티벌룬 장치 등)에 의해 야기되는 과도한 러빙(rubbing) 작용의 결과로서 섬유들이 받게되는 마모와 관련이 있다. 이와 같은 마모의 결과로 섬유에 열이 가해져 합성섬유인 경우에는 마이크로모폴로지 변화가 일어..

래핑과 래핑의 방지

에이프런과 로울러는 실의 품질에 매우 중요한 역할을 한다. 따라서 이의 성능을 향상시키면 정대시간 감소와 실의 품질 향상 등의 성과를 얻게 된다. (1)링방적에서 래핑의 중요성 : 링방적시 래핑에 의한 손실비용은, 사절 보수와 관련된 시간, 랩제거와 관련된 시간, 생산중지로 인한 실 생산량의 감소 및 그에 따른 이익 감소, 비용 등이다. 예를 들어 1,000추의..

Humidity control improves quality

The Harriet and Henderson yarn spinning plant at Clarkton, NC, USA, which was completed earlier this year, is equipped with electronic humidity controls. The company built its own system, using off-the-shelf components, for its 250 000 square feet factory which produces about 600 000 pounds of yarn per week. The system controls the humidi..

Bicomponent spinning of naturally colored cotton yarns

Naturally colored cotton grows fibers in shades of green, red, and brown, instead of the usual white. although the plants have been cultivated in many countries for thousands of years, they remained obscure because fibers from the indigenous plants could

Mule spinning is focus of investment at Selkirk

The Scottish Woollens Group is installing some of the equipment that was particularly impressive at ITMA 95. Tony Taylor, Chairman of the woven division, said that the investment in Bigagli electronic mules, to be installed by the end of september, will replace the older mule plant. Many customers insist on mulespun yarns due to the bette..

Artificial neural networks applications in cotton spinning processing

With the spread use of HVU/HVT systems in spinning (in the fibers and yarns quality field and the arrival of artifical intelligence, patterns of binary data may be analyzed to detect deviations from patterns produced under statistical control and making recommendations concerning the root cause of the problem and the appropriate correctiv..

Effect of Yarn Modulus on Deformation of Flanged Bobbin.

Researchers measured stress distribution in yarn packages wound on a flanged bobbin. As the smaller Young's modulus decreased, the radial load compressing the barrel of the flanged bobbin increased. The increased rate of the radial compressive stress decreased with accumulated yarn layering. As the smaller Young's modulus decreased, the a..

Rieter Uniblend A 80 Blending/Batching Machine.

The Rieter Uniblend A 80 blending/batching machine processes cotton and manmade fiber blends, cotton blends of various origin, waste and other short and long staple fibers, linen fibers, and animal fibers up to 65 millimeters long. It is available with two to eight blending modules and outputs of up to 300 kilograms per hour per module. f..

Micro 2000 얀클리어러

Premier Polytronics Limited에서는 Micro 2000 얀 클리어러를 개발했다. Micro 2000 얀 클리어러의 특징으로서는 가는 결점을 검출하기 위한 부가적 채널, 매우 짧은 길이의 굵은 결점을 검출하기 위한 넵채널, 2합사 권사시 잘못된 세번째 합사의 제거, 자동보정, 명확한 클리어링 곡선, 권사속도 탐지, 액정판, 컴퓨터 네트워킹 및 콘 결함 정보시스템을 들 수 있..