SLUB YARN CHARACTERISTICS THROUGH IMAGE PROCESSING A CRITICAL REVIEW

Textile Technology

In textile spinning mill apart from producing carded and combed yarn using ring frame, the mills are now producing slub yarn. Basically slub in the considered as fault in the yarn. But if the slub in the yarn introduced in the yarn at regular intervals with specified size, it becomes a value added yarn, which will fetch higher price per kg than that of normal yarn. For producing the slub in the yarn a retrofit arrangement the ring frame has to be done which provides intermittent drive to the front bottom roller of the drafting unit. Using this attachment various size of slub with different length intervals can be produced. Usually in ring yarn 3mm to 6mm slub size are produced with 25 to 40 slum/Meter of yarn. The specialty of slub yarn is that at the slub portion, the yarn twist level is almost zero and is of a twist less portion. Also the slub portion in the yarn is the weakest place in the yarn. So during dyeing process since the slub portion has zero twist, it absorbs more dye and produce more shade than the normal portion in the yarn. This brings a novelty appearance in the fabric. Now a days for making of denim fabric, upholstery fabric, furnishing fabric, home textiles the slub yarn is used. The main parameters of slub yarn such as slub length, slub distance, slub multiplier, base yarn count, twist level etc.., have an effect on the strength, elongation performance of the yarn as well as fabric. So far the slub yarn size and length characteristics has been analyzed using image analysis technique and simulation method. In this paper a collective abstract of research work done on yarn slub yarn quality and it character analysis has been dealt elaborately, which will be useful to understand the concepts for further work.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.