By B. Purushothama
The ebook presents an creation to caliber administration and the standard ambitions of goods. Chapters talk about the impression of yarn parameters from a customer’s point of view, purposes for negative caliber, numerous effective features and difficulties concerning spinning. The motives of yarn defects and applicable treatments also are tested. the various common-market court cases that spinners adventure 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 (Woodhead Publishing India)
This can give rise to strength related problems, streakiness and barre in the dyed fabrics. A large difference in elongation of fibres between the components leads to problems in drafting and also adversely affects the yarn strength due to unequal sharing of tensile load. 2 Variations in raw material (a) We normally see variation in length, strength, elongation, maturity, colour, fineness from lot to lot and bale to bale. , and also due to purposeful act of mixing up some poor quality materials to get higher price realization.
If the supply is less or more, it shall cause problem in getting the exact effect that was planned. One should remember that yarns are dyed to get some special effects, and the quantity required in each shade need not be same. If any extra quantity is dyed, that yarn remains unsold. 3 ● ● Grey yarns for socks knitting Count variation: In socks knitting, the number of cones fed is less; may be one, two or four, and not very high like in the case of T-shirts where 48, 72 or 96 cones are creeled. 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.
As the looms run at a fairly low speed, and the yarns are of multifold in nature, normally there shall be no breaks due to weak yarn. We get breaks due to faulty winding with cones having bunches, back stitches, etc. Elongation: As a number of different fibres are used together in weaving of carpets and furnishing fabrics, the elongation variations are very high. The yarns should have sufficient elongation to work without breaks. Winding quality: Winding defects cause breakages while unwinding on looms.
A Practical Guide to Quality Management in Spinning (Woodhead Publishing India) by B. Purushothama