Production Formula for Knitting Section
Knitting production is completely mathematical based. Knitting master or knitter or production manager of knitting section has to do lot of calculation for optimum production of knitting. I thing the following formula will help a knitter to find out better production .
***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 structure and fabric type. Ks is calculated and estimated as below:
Ks = (GSM x Stitch length) / Tex