Production Calculation in Spinning is one of the principal tasks for the production manager who is responsible for spinning the floor. Maximum time textile engineers forget the common spinning production calculation formula. In this article just I want to try to give a production calculation formula in cotton spinning.
Spinning is a major and ancient part of the textile industry. It is part of the textile manufacturing process where three types of fiber are converted into yarn. Then fabrics, undergo finishing processes such as bleaching to become textiles. To complete finished products (yarn) in spinning every textile personnel must know some formulas.
Production calculation formula of blow room:
Blow room production per hour,
………………………………………………………..60
The surface speed of c. roller x ……..…………………… x Eff. % x Waste% x No. of scatcher
…………………………………………….36 X 840 X Hank
Production calculation of carding:
………………………………………………………………………………………60
Production of carding = Surface speed of doffer x …………..………….…………. x Effi% x Waste%
………………………………………………………………………..36 x 840 x Sliver hank
Production calculation of Drawing:
…………………………………….Front roller surface speed X 60 X Efficiency% X Waste% (lb/hr)
Production of Drawing = ………………………………………………………………………………………………
…………………………………………………………………..36 X 840 X Hank
Production calculation of lap former:
……………………………………….πDN…………….lap count (grain/yard)
Lap former production =……….…….. x 60 x …………………..………….. x η x no of machine(lb/hr)
…………………………………………36……………………………..7000
Production calculation of Comber:
Production of comber per day,
…………………………………………………………………………………………………….100-Noil%
= Nip/min X Feed/nip X No. of head X Feed lap weight X Efficiency X .…………….. X 60 X 24
……………………………………………………………………………………………………………100
Production Calculation Formula of Speed Frame or Simplex:
………………………………………………………Flyer speed (rpm) x 60 x 8 x No of flyer x Efficiency
Production Calculation of Simplex = …………………………..…………………………………………………
……………………………………………………………………TPI x 36 x 840 x Roving hank
Production calculation formula of Ring Frame:
……………………………………….Spindle r.p.m X 60 X 8 X No of spindle
Ring Frame Production = ……………………………………………………………. X Efficiency
…………………………………………………T.P.I X 36 X 840 X Count
Author of this Article: Mustaque Ahammed Quality Assurance Officer, Lamisa Spinning Ltd. Tongi, Gazipur Cell: +8801723300703 Email: [email protected]