In winding, transformation spinning bobbin yarn to yarn package is carried out manually. For that, some defects may occur in winding. During types of defects can be found. The following are the main defects in winding.
Defects in winding:
1.Patches are formed on the yarn.
2.Incorrect winding speed.
3.Yarn tension varying.
4.Packages are dirty.
5.Yarn package has incorrect shape.
6.The yarn has too much knots.
7.Excessive full bobbin.
8.Piecing up.
9.Over lapping.
10.Two end winding.
11.Mixing yarns with different density of linear.
12.Greasy and dirty yarn.
13.Poor yarn cleaning and snarling.
During process, defects in winding should be concerned about.
Wastage in winding: In winding section, different reasons can cause wastage. The followings are the main reasons:
1.Knots on package
2.Ends are still remained after tying.
3.Yarn slough off.
4.Coil is remained on the yarn package.
5.Short ends dropped at threading.
6.Greasy and dirty yarn.
7.Workers negligence.
The sizes of the spinning bobbin and breakage rate have great influence on the quantity of wastage. Increasing the package size and reducing the breakage rate of yarn, wastage in winding is fallen.
Post: Defects and Wastage in Winding
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