By B. Purushothama
The ebook offers an creation to caliber administration and the standard goals of goods. Chapters talk about the impression of yarn parameters from a customer’s point of view, purposes for negative caliber, a number of high-quality features and difficulties regarding spinning. The reasons of yarn defects and acceptable treatments also are tested. the various common-market proceedings that spinners adventure are mentioned and the activities to be taken are defined.
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Extra resources for A Practical Guide to Quality Management in Spinning (Woodhead Publishing India)
Then yarns need not be waxed as it is done for knitting yarns. Absorbency: Absorbency is a very important criterion for the yarns for towels. Consistency in shades: When dyed yarns are being used consistency in shade becomes very critical. Colour fastness: This is a very important requirement of dyed yarns used for towels, as any poor fastness shall result in colour bleeding and spoil the appearance of the towel. 4 ● Yarns for towels Yarns for carpets and furnishings Count variations: The shift in average count is more critical as it affects the weight of the fabric.
If a carded hosiery yarn is taken for producing single jersey on a high-speed knitting machine, the quality objectives demanded shall be something as follows: ● ● ● ● ● ● ● ● ● Evenness to get a uniform appearance of the fabric. Sufficient and uniform strength to work on high-speed knitting machine without excessive breaks. Minimum lint generation while knitting at high speeds. Free-form dead cottons and immature fibres to get a uniform depth of dyeing. Flexible and smooth to move freely in the needles.
The sewing threads are normally singed. 3 Communications of quality objectives The quality objectives of the yarns being produced should be clear to the people working on the spot in order to avoid quality complaints and getting the required quality right at first time. The workers and the supervisors need to be trained adequately and informed from time to time regarding the changes in the objectives. It is a normal practice with leading buyers to send their representative to the mills to study the working conditions and to explain the critical requirements while starting a new product or new order.