Formula for Knitting Section:
Knitting production is completely mathematical based. The knitting master or knitter or production manager of the knitting section has to do a lot of calculations for optimum production of knitting. I think the following formula will help a knitter to find out better production.
Production Formula for Knitting Section:
*** Production/shift in Kg at 100% efficiency,
…..RPM x No. of Feeder x No. of Needle x SL (mm)
= ………………………………………………………………………
………………………3527.80 x Yarn count
*** Production/shift in meter,
….Course/min
= …………………
…..Course/cm
…..RPM x No. of Feeder x 60 x 12 x Efficiency
= ………………………………………………………………
…………………..Course/cm x 100
*** Fabric width in meter,
….Total no of wales
= …………………………
…..Wales/cm x 100
….Total no. of needles used in knitting
= …………………………………………………….
………………..Wales/cm x 100
*** Running Length (L),
…….Machine rpm x No. of Feeder x Efficiency x 60
= …………………………………………………………..………….. m/hr
….No. of Feeders per course x Courses per cm x 100
*** Fabric width (WB),
…..Cylinder diameter in inch x Machine Gauge
= ……………………………………………………………….. m
………………………Wales/cm x 100
*** Production in Kg,
….Running length in meter per hour x WB x Weight in GSM
= …………………………………………………………………………………… Kg/hr
……………………………………….1000
…………………………………………Weight (in gm) x 39.37
*** Length Calculation = …………………………………..
………………………………………….Width (in inch) x GSM
*** Production per shift in KG at 100% efficiency,
……RPM x no of feeder x no of needle x stitch length (mm) x 60 x 12
= …………………………………………………………………….…………………………
…………………….10 x 2.54 x 36 x 840 x 2.2046 x yarn count
………………………………………Ks x 590.5
*** Stitch length = …………………………….
………………………………Count (Ne) x GSM
Where,
Ks = knitting constant
Count = linear density of yarn
GSM = gm per square meter
Another formula is:
*** Stitch length = (Tex × Ks) / GSM
Ks is a constant. Its value is different for different fabric structures and fabric types. Ks is calculated and estimated as below:
Ks = (GSM x Stitch length) / Tex
Thank you for your post. It was quite interesting.
Interesting Article.