What is Crimp% ? || Study With Param || Parmanand

Yarn Crimp: When warp and weft interlace in fabric, they follow a curved way. Crimp in a fabric is the measure of this waviness. The crimp of yarn is measured in crimp%.
Crimp% is defined as the mean difference between the straightened thread length and curved thread length while in the cloth and is expressed as a percentage.
Crimp%=( Uncrimped length-Crimped length) x100/
Crimped length
Factors Affecting Crimp% of Yarn in the Cloth-
 EPI- Higher the EPI, higher will be the weft crimp%
 PPI- Higher the PPI, higher will be the warp crimp%
 Warp linear density- Higher the coarseness of warp, higher will be the weft crimp%
 Weft linear density- Higher the coarseness of weft, higher will be the warp crimp%
 Yarn tension- Higher the warp tension, higher will be the weft crimp%
 Weave structure- Higher the interlacement no., higher will be the crimp%
 Yarn twist- Higher the twist in warp than weft, lower will be the weft crimp%
 Yarn extensibility- Higher the warp extensibility, lower will be the weft crimp%
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P.M.D. & CV% of Yarn
• P.M.D. & CV% of Yarn ...