The problem of yarn breakage during spinning is quite serious, but it is difficult to predict the number of yarn breakages, because the tension and strength of the yarn always vary. The author has used simple mathematical models of the variation of the tension and the strength of the yarn, and calculated the probability of yarn breakages. The result has shown that the variation of the yarn stre...

Regarding the importance of ring spinning method among spinning systems, great potentials exist for research about on the improvement of the quality and properties of ring spun yarn. This study aims to improve yarn quality by changing the shape and dimensions of spinning triangle through forming a groove in the middle zone of the front darfting &#10roller with a curvature of 5 to 7 mm. For the ...

Regarding the importance of ring spinning method among spinning systems, great potentials exist for research about on the improvement of the quality and properties of ring spun yarn. This study aims to improve yarn quality by changing the shape and dimensions of spinning triangle through forming a groove in the middle zone of the front darfting roller with a curvature of 5 to 7 mm. For the to...

A multi-way control system for spun yarn breakage detecting and tow stopping is presented for linen wet spinning frame upgrade in medium-sized businesses of southeastern China. The signals from periodic rotations of spun yarns are picked by piezoelectric sensors. After input protection and multiplexers, the weak voltage signal from gated channel is processed through links including voltage foll...

Commonly used in telecommunication, automotive and biomedical applications, microelectromechanical systems have limited successful commercial applications in other industries. This report briefly reviews MEMS, with a focus on sensors, and their limitations in the textile environment, as well as, outlines four potential projects for MEMS applications in textiles. One application was selected; mo...

In the warping process, one of most crucial elements determining production efficiency are break detectors. Due to high speeds, they must ensure not only reliability but also very low response times. Currently, commonly used detectors mechanical systems that detect lack yarn tension, and with development electronic systems, it has become possible measure tension directly in tensioners themselve...