Comprehensive Guide to Knitting Production Calculation

Textile knitting has long been a cornerstone of the textile industry, offering a versatile and innovative approach to fabric creation. Unlike traditional weaving, which interlaces threads at right angles, knitting forms interlinked loops of yarn, resulting in stretchable and often soft materials.

This technique opens the door to a diverse range of fabrics, from lightweight, breathable garments to sturdy, warm textiles. With advances in technology, both hand-knitting and machine processes are thriving, allowing for creativity and sustainability in fashion and beyond.

Today we will gonna learn some crucial factors of knitting calculation like Production Calculation, Production Length, Total Width, Production Capacity for single jersey fabric.

Problem 1

Find out the fabric production of 1 day in kg considering;

• Efficiency, A: 70%
• Machine Gauge, B: 24
• Machine Dia, C: 30"
• Yarn Count, D: 30 Ne
• Machine RPM, E: 30
• Stitch Length, F: 2.20 mm
• No. of feeders, G: 90

Solution:

Formula:

= {(3.14 X Dia X Gauge X Stitch Length X RPM X 60 X 24 X 1.09 X No. of feeders X Efficiency) / (1000 X 840 X Count X 2.2)}

= (3.1416 X C X B X F X E X 60 X 24 X 1.09 X G X A) / (1000 X 840 X D X 2.2)

= (3.1416 X 30 X 24 X 2.2 X 30 X 60 X 24 X 1.09 X 90 X 0.7) / (1000 X 840 X 30 X 2.2)

= 14762396295 / 55440000

= 266 kg/day

Problem 2

Calculate

1. Production Length (L),
2. Total Width (W) &
3. Production Capacity (P)

considering;

• Machine Diameter, (A): 23"
• Machine Gauge, (B): 24
• RPM, (C): 35
• No. of Feeder, (D): 70
• Efficiency, (E): 75%
• Course Density, (F): 19 course per cm
• Wales Density, (G): 16 wales per cm
• GSM, (H): 170

Solution:

Production Length (L);

Formula:

= {(RPM X No. of Feeder X Efficiency X 60) / (No. of feed system X Course per cm X 100)} Meter/Hour

= {(C X D X E X 60) / (1 X F X 100)} Meter/Hour

={(35 X 70 X 0.75 X 60) / (1 X 19 X 100)} Meter/Hour

=110250 / 1900 Meter/Hour

= 58 Meter/Hour

Total Width (W);

Formula:

= {(3.1416 X Dia X Gauge) / (Wales per cm X 100)} Meter

= {(3.1416 X A X B) / (G X 100)} Meter

= {(3.1416 X 23 X 24) / (16 X 100)} Meter

= 1735 / 1600 Meter

= 1.08 Meter

Production Capacity (P);

Formula:

= (Production Length X Total Width X GSM) / 1000 Kg/Hour

= (L X W X H) / 1000 Kg/Hour

= (58 X 1.08 X 170) / 1000 Kg/Hour

= 10649 / 1000 Kg/Hour

= 10.65 Kg/Hour

N.B. All of these formulas are applicable for single jersey fabric.