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Production Formula for Knitting Section

Production Formula for Knitting Section
Rofiquzzaman Raju
Fabric Technologist,
B.J.Group, Mawna, Gazipur
Email: rtextile.finance@gmail.com



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 .
Knitting section
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 structure and fabric type. Ks is calculated and estimated as below:

Ks = (GSM x Stitch length) / Tex


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2 comments:

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  2. Interesting Article

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