280 gsm 2x1 full feeder Spandex rib fabric

280 gsm 2x1 full feeder Spandex rib fabric :

There is various gsm fabric on 2x1 full feeder spandex rib fabric. In this blog, I will share the parameter of 275-280 gsm fabric. 

Required yarn count: 30/1 combed cotton + 40D spandex 

Fabric composition: 94% combed cotton 6% spandex 

Knitting machine dia x gauge: 42x18

Required dia: 54 inch 

Stitch length: 2.85 mm

Knitting machine spandex feeding cm: 250 centimeter

During knitting grey dia: 53 inch 

During knitting grey gsm: 285 

After relaxing grey dia: 51 inch 

After relaxing gsm: 335 

We washed the fabric to check the fabric gsm possibility. 

After wash dia: 41 inch 

After wash gsm: 518 

Tumble dry lengthwise shrinkage%: -26%

Tumble dry widthwise shrinkage% : -16 %

As it is a full feeder spandex fabric so we just need to heat set the fabric. Bruckner stenter parameter is given below: 

Setting dia: 59 inch 

Overfeed% : 45%

Temperature: 195°C

Speed: 18 meter / minute

After heat set dia: 58 inch 

After heat set gsm: 270 

After heat set we checked shrinkage and got as below: 

Dia: 59 inch 

gsm : 279 

Lengthwise%: +1.5%

Widthwise%: -10% 

After that we dye the fabric in a dyeing machine and then dry it in a Stenter machine as per the below parameter: 

Speed: 20 meter / minute

Temperature: 140°C

Overfeed%: 50%

Dia: 54 inch

Gsm: 270

After that, we compacted the fabric in a lafer compactor machine as per the below parameter: 

Temperature: 110°C

Speed: 20 meter / minute

Overfeed%: 50%

Steam: Half

Finished dia: 53 inch 

Finished gsm: 280

Lengthwise shrinkage: -3.2%

Widthwise shrinkage%: -3.5%

Spirality%: 1%

We always make half-feeder trims rib but sometimes also make full-feeder spandex rib. Due to full feeder spandex being more or double than half feeder and can gain better recovery than half feeder and fabrics smoothness is very fine.