Relation Between Yarn count, Knitting, Dyeing & GSM

Relation Between Yarn count, Knitting, Dyeing & GSM
 
Now we learn the Relation Between Yarn count, Knitting, Dyeing & Gsm.
 
At first please note:
1 CM   = 10 MM
1 INCH = 2.54 CM 
1 INCH = 25.4 MM  
 
Knitting Rules
---------------------
If we want to make Single jersey finished fabric with 130 GSM to 150 GSM
then we must follow the below rules:
 
Yarn count will be : 30/s comb or card
Stitch line will be : 2.65 - 2.90
Grey Gsm should be : 110 - 120 Gsm
 
Where: 
1 cm = 18/20 Feeder for Single Jersey
1 cm = 28/32 Feeder for Single Lacost, S/Pique
1 cm = 30/34 Feeder for Double Lacost, D/pique
--------------------------------------------------
If we want to make Single jersey finished fabric with 160 GSM to 170 GSM
then we must follow the below rules:
 
Yarn count will be : 26/s comb or card
Stitch line will be : 2.70 - 2.90
Grey Gsm should be : 125 - 135 Gsm
 
Where: 
1 cm = 16/18 Feeder for Single Jersey
1 cm = 26/30 Feeder for Single Lacost, S/Pique
1 cm = 28/32 Feeder for Double Lacost, D/pique
--------------------------------------------------
If we want to make Single jersey finished fabric with 175 GSM to 190 GSM then we must follow the below rules:
 
Yarn count will be : 24/s comb or card
Stitch line will be : 27.5 - 29.5
Grey Gsm should be : 135 - 145 Gsm
 
Where: 
1 cm = 16/18 Feeder for Single Jersey
1 cm = 24/28 Feeder for Single Lacost, S/Pique
1 cm = 26/30 Feeder for Double Lacost, D/pique
---------------------------------------------------
If we want to make Single jersey finished fabric with 190 GSM to 210 GSM
then we must follow the below rules:
 
Yarn count will be : 20/s comb or card
Stitch line will be : 2.90 - 3.20
Grey Gsm should be : 150 - 165 Gsm
 
Where: 
1 cm = 4/18 Feeder for Single Jersey
1 cm = 22/26 Feeder for Single Lacost, S/Pique
1 cm = 24/28 Feeder for Double Lacost, D/pique
--------------------------------------------------
If we want to make P/interlock finished fabric with 180 GSM to 210 GSM
then we must follow the below rules:
 
Yarn count will be : 40/s comb or card
Stitch line will be : 1.55 - 1.75
Grey Gsm should be : 135 - 150 Gsm
 
Where: 
1 cm = 32/36 Feeder 
----------------------
If we want to make P/interlock finished fabric with 210 GSM to 230 GSM
then we must follow the below rules:
 
Yarn count will be : 34/s comb or card
Stitch line will be : 1.65 - 1.85
Grey Gsm should be : 150 - 170 Gsm
 
Where: 
1 cm = 30/34 Feeder 
----------------------
If we want to make P/interlock finished fabric with 230 GSM to 250 GSM
then we must follow the below rules:
 
Yarn count will be : 30/s comb or card
Stitch line will be : 1.65 - 1.85
Grey Gsm should be : 170 - 190 Gsm
 
Where: 
1 cm = 28/32 Feeder
-----------------------
If we want to make RIB (1X1) finished fabric with 170 GSM to 190 GSM
then we must follow the below rules:
 
Yarn count will be : 30/s comb or card
Stitch line will be : 2.65 - 2.85
Grey Gsm should be : 125 - 130 Gsm
 
Where: 
1 cm = 17/18 Feeder
----------------------
If we want to make RIB (1X1) finished fabric with 195 GSM to 225 GSM
then we must follow the below rules:
 
Yarn count will be : 26/s comb or card
Stitch line will be : 2.70 - 2.95
Grey Gsm should be : 140 - 155 Gsm
 
Where: 
1 cm = 16/17 Feeder
----------------------
If we want to make RIB (1X1) finished fabric with 230 GSM to 250 GSM
then we must follow the below rules:
 
Yarn count will be : 24/s comb or card
Stitch line will be : 2.70 - 2.95
Grey Gsm should be : 160 - 175 Gsm
 
Where: 
1 cm = 16/17 Feeder 
-----------------------
However, you can also calculate the of find out the Grey fabric Gsm from a finished fabric Gsm,
It will be as like below:
 
In single jersey fabric :
 
If the yarn count is 30/s then the grey gsm will be 80% to 85% less from the finished Gsm
 
If the yarn count is 26/s then the grey gsm will be 78% to 80% less from the finished Gsm
 
If the yarn count is 24/s then the grey gsm will be 76% to 77% less from the finished Gsm
 
If the yarn count is 20/s then the grey gsm will be 76% to 79% less from the finished Gsm
 
In P/int fabric :
 
If the yarn count is 40/s then the grey gsm will be 72% less from the finished Gsm
 
If the yarn count is 34/s then the grey gsm will be 72% less from the finished Gsm
 
If the yarn count is 30/s then the grey gsm will be 74% less from the finished Gsm
 
If the yarn count is 26/s then the grey gsm will be 72% less from the finished Gsm
 
If the yarn count is 24/s then the grey gsm will be 72% less from the finished Gsm
 

Thanks 
JITU

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