Question 19 (Textile Engineering & Fibre Science)
Theoretically limit for mass irregularity (CVlim) of a cotton yarn does NOT depend on
| (A) | Mean fibre length |
| (B) | Mean fibre fineness |
| (C) | Mean yarn count |
| (D) | Coefficient of variation of fibre fineness |
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Frequently Asked Questions | FAQs
Which is the index of irregularity?
The index of irregularity in textiles is typically referred to as “yarn irregularity” or “yarn hairiness”. This refers to variations in the diameter, density, and twist of individual yarns, which can affect the appearance, texture, and strength of the final textile product. The irregularity can be measured using instruments such as a yarn hairiness tester or a yarn evenness tester, which evaluate the length of protruding fibers or variations in tension along the yarn. The measurement results can then be used to determine the quality and consistency of the yarn and to make adjustments to the production process as needed.
What is yarn irregularity?
Yarn irregularity refers to variations in the diameter, density, or twist of individual yarns used in textile manufacturing. These irregularities can affect the appearance, texture, and strength of the final textile product.
There are various causes of yarn irregularity, including variations in raw material quality, uneven spinning or twisting of yarn, and mechanical or processing problems during production. Yarn irregularity can be measured using instruments such as yarn hairiness testers or yarn evenness testers, which evaluate the length of protruding fibers or variations in tension along the yarn.
The measurement results can then be used to determine the quality and consistency of the yarn and to make adjustments to the production process as needed. Proper monitoring and control of yarn irregularity is important for ensuring the overall quality of the final textile product, as well as for minimizing waste and reducing production costs.
Theoretically limit for mass irregularity (CVlim) of a cotton yarn?
CVlim=106/ sqaure root n
Where , n is the no. of fibres.