By B. Purushothama
The booklet presents an advent to caliber administration and the standard ambitions of goods. Chapters talk about the influence of yarn parameters from a customer’s standpoint, purposes for terrible caliber, a number of advantageous points and difficulties on the topic of spinning. The reasons of yarn defects and acceptable treatments also are tested. a number of the common-market proceedings that spinners event are mentioned and the activities to be taken are defined.
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Extra info for A Practical Guide to Quality Management in Spinning
Uniform length of yarn on cones is an important factor to avoid wastage of remnant yarns on cones. Combed yarns for socks: The socks made by using combed yarns may be used for various purposes like baby socks, executive socks, patient’s socks, old people’s socks, sports socks, etc. In all cases the count should be as per specification. This is because the weight of socks and also the dimensions vary as per the count. The variation in count should be as low as possible to avoid sock to sock variations in size.
Count variations in yarns for socks will not give problem of barre, as we get in T-shirts, as a complete sock is made up by just by a single cop or two cops. Normally a sock weighs 5–7 g against the weight of a spinning cop varying from 50 to 80 g. A variation in count results in change in the weight of socks and in some cases the dimensions of socks get changed because of shrinkage. The customer has to spend for sorting the socks as per weight/dimensions and pairing them. Twist variation: Short-term variations in twist, mainly due to higher breakages in ring frames, or uneven twist flow due to uneven yarn results in short streaky appearance.
Coarser the micronaire, higher shall be the U%. Coarser the fibre, higher the end breakage rate in spinning. Uster thin place (30%) in the yarn vary depending upon the fibre micronaire. Lower the micronaire lower the thin places and vice versa. Raw materials if not suitable for the product being produced cannot give the quality parameters as needed. We need to understand the quality objectives of the product and decide the raw materials. The factors like feel of the fabric, hairiness in the surface of fabric, strength of the yarn and the fabric and dyeability are governed by the raw material properties.
A Practical Guide to Quality Management in Spinning by B. Purushothama