Winding in Weaving:
The process of transferring yarns from ring bobbins, hank, etc. into a suitable package is called the winding process. Winding is very important in warping. In fabric manufacturing, though directly winding is not so much important, but rewinding is so important. Winding is two types- one is precession winding and another is non-precession winding. Winding is more than just transferring yarn from one package to another. Further functions of winding are to check the yarn and to eliminate any faults found.
How to Calculate Winding in Weaving
Problem-1
Calculate the time required to wind 500 lbs of 24 Ne cotton yarn on 15 drums, where the actual production per drum per minute is 560 yds.
Given that,
Production= 560yd/min/drum, 24 Ne, yarn= 500lb, time=?
Solution:
24 Ne means,
1 lb. of yarn contains = 24X840 yds. yarn
500 lbs. of yarn contains = (24X840X500) yds. yarn
560 yds. of yarn to wind in 1 drum needs =1 min
1 yd. “ “ “ ” ” ” ” 15 drum “ =1/ (560X15) min.
(24X840X500) yd “ “ “ “ “15 drum = (24X840X500) / (560X15) min.
= 1200 min.
= 20 hr. (Ans.)
Problem-2
Calculate the drum required to wind 900 lbs of 25 Ne cotton during the time 28 hrs, where the actual production per drum per minute is 600 yds only.
Given that,
Production = 600yd/min/drum
25 Ne, Yarn = 900 lbs, time=28 hr., Find a number of the drum.
Solution:
25 Ne of yarns means,
1 lb of yarn contains = 25X840 yd yarns.
500 lb of yarn contains = (25X840X900) yd yarns.
600 yds. of yarn to wind in 1 min in = 1 drum
1 yd ’’ ’’ ’’ ’’ ’’ ’’ ’’ ’’ (60X28) min in = 1 / (600X60X28) drum.
(25X840X900) yds. ’’ (60X28) min = (25X840X900) / (600X28X600) drum
= 18.75 drum
= 19 drum (Ans.)
Author of this Article: Rofiquzzaman Raju Fabric Technologist, B.J.Group, Mawna, Gazipur Email: [email protected]