Yarn Hairiness and Causes of Higher Hairiness

Yarn Hairiness

• Hairiness is defined as the sum of fiber ends and loops protruding out from the main compact yarn body.

• It is the most circumstances an undesirable property, giving rise to problem in fabric production and deteriorates the fabric appearance.

• Measurement of hairiness dependent on the method chosen for detecting the hairs.

• It is not possible to represent hairiness with a single parameter because the number of hairs and the length of hairs both vary independently. 

normal view

micro view

Causes of Higher Hairiness

a)Raw Materials

-Maturity: In case of cotton 70% maturity of the fibers is needed, if less then cause hairiness. Immature and dead fibers result in hairiness.

-Micronaire (Fineness): Range of micronaire value for cotton yarn is (4.2±.2). Micronaire value of (4.2±.6) results in increased hairiness which is used in flannel like fabrics having soft fell. 

-Uniformity Ratio: normally fibers uniformity ratio is 40-50%. If it is less than hairiness results.

b) Process 

    Inadequate drafting and orientation

       Spinning Triangle

Maintenance

• Rubbery surfaces 
• Life of devices or machine parts

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Yarn Hairiness and Causes of Higher Hairiness