Production Formula for Knitting Section

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

Author of this Article:
Rofiquzzaman Raju
Fabric Technologist,
B.J.Group, Mawna, Gazipur
Email: [email protected]

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