What is yarn imperfection?
Imperfections can be defined as the total number of neps, thick and thin places in a given length of yarn. … A yarn with more imperfections will exhibit poor appearance grade, lower strength and poor performance in weaving is likely to produce fabric with low quality.
What is CV in yarn?
The variation of the yarn count (CV count) is the variation from one bobbin to the other. … In general the lower the C.V.% the better is the measured value of the yarn.
What is CV% of count?
The variation of the yarn count (CV count) is the variation from one bobbin to the other. If this variation is more than 2% the difference in the fabric is visible with bare eyes. C.V% A statistical measure of the variation of the individual readings (Coefficient of observed variation). …
What does IPI mean?
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|IPI||Intelligent Peripheral Interface|
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How is yarn IPI calculated?
The imperfection index (IPI) is the sum of yarn thin places/ km (-50%), thick places/km (+50%) and neps/km (+200%) per kilometer of tested yarn for ring spun yarn [2, 59] .
How do you calculate yarn count for CV?
Coefficient of mass Variation (CV%):
The coefficient of mass variation CV % is the ratio of standard deviation of mass variation divided by average mass variation. The higher the CV value is the more irregular the yarn.
How is CSP calculated?
C.S.P is the product of English count and strength of yarn in pound. i.e. C.S.P = Strength of yarn in pound x Count in English system. Again, English count is the no. of hanks in 840 yards length per 1 pound weight of yarn.