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yes, it is possible. Though there are no. of factors which effects the poly fastness
1- Poly yarn
2- Fabric structure
3- Fabric dyeing temperature
5- Drying temperature
6- Soaping method
7- Soaping chemical
I have found that onecompany based in Mumbai, The Assosiates chemicals hav developed a combination of two chemicals, which works up to a limit to improve wash fastness
In blen % tolerance is 2% of the blend percentage.
If formaldehyde contant is present , it may be from the Chemical such as fixer, Resin etc. The best way to remove the free formaldehyde is boil the fabric in presence of acitic acid with soap. The pH should be around 5.0
If possible pls core neutraliser also .
Pls check the performance of soap by dyeing 0.5% Turquise shade with and without Soap. Lesser the depth of dyed fabric in presence of soap better the performance of soap
Weight loss hapenns at two places.
1- In process
2- On account of moisture loss
In lycra fabric we loose Moisture more than the cotton fabric, hence weight loss is more
This is very common problem of poor soaping of dyed fabric.
In this case either we have to treat the white fabric with Thioten As of clarient , Or treat Red or any dyed fabric with a detergant which acts as like NRV valve for the colour. If that also does not work, then do the resin finish to the Red colour fabric.
If the red colour portion is very less then it may work, But if the dyed fabric portion is large in the garment, in that fixer will help to fix the unfix dyes on white ground also, Which will be looking as tint on white ground,this tint will not go easily. Hence as much possible donot dip the garment in fixer bath.
No, It is not required, If we do this, the there will be crease marks in the fabric which can't be removedat any stage later on.
To manufacture crease free viscose fabric , it is very tough job. And it is dream of any dyehouse incharge. The secret which i could find out inmy crrier is that we should not give any treatment to viscose at less than 50 deg C temp. in dyeing vessel.
The processed fabric should be cut in square , and keep on table without any pressure or pulling. If fabric remain flat from all side it is properly heatset.
If it happens , it means the type of elastane is beeing used haveing unevenness. I have faced this problem when i was working in arvind. It is vey typical problem, No one can understand this problem without seeing actual fabric. The solution is to change the lycra type only
Yes if the fabric is without tuck, then it is very easy to calculate the finish width of knitted fabric. But if u know the WPI of the finish fabric then it is very easy to calculate the finish width by deviding the no. of needle of knitting machine by the wpi. e.g. 32 is wpi for Ne 20/1 s/j fabric, and if we knit on 30" 20 gg machine , where the needles are 1890 needle, then width will be 1890/32 inch.
Yes we can derive the finish width , If we know the grey gsm, grey width, targeted finish gsm. Then finish width is calculated by the below formula
=grey gsmxgrey width*1.1*0.9*0.86/finish gsm
The bleaching of jute is a typical process of neutralising first iron contant in jute then bleaching jute.
Most of the time people try to do this by oxalic acid, Hcl.
But i tried to do this with H2O2 , i did Cold oxidative bleaching with 80 gpl H2O2, 35 gpl Caustic and 16 gpl Peroxide stablizer.
Followed by the steaming in cbr.
After finishing all processes, a fabric was tested and found to contain some APEO traces and the level of the APEO content present was not within the acceptable limits. Is there any proven method to remove the APEO content?
There are two simple treatments one can try.
1. Do hot soaping using a real APEO free surfactant, followed by 2 hot and cold washes.
2. Treat at 70°C with Formic acid 2gms/liter for 30 minutes, followed by 2 hot and cold washes.
Measure the weight of flat knit collar in Gms.
Measure the length and width of collar in cms.
then use the formula
GSM = Weight in gmsx10000/length of collar /width of collar in cms
–Alkyl phenol ethoxylates is the full form of (APEOs)
–APEOs are non-ionic surfactants which find wide use inthe textile industry in detergent or chemical mixtures as surfactants,emulsifiers or dispersants.
- It is in general two types, NPEO, OPEO
Any Textile item which has APEO , will release the APEO in the subsequent cold washes, And that is the reason, It is banned chemical in the textile. Because this released APEO will kill the sexual ability of aquarious .
So if there is limited amount of APEO in any textile item, then with multiple washes with Powerfull sequestring agent it can be reduce.
If you can wash the textile item in 10- 20% solution of acetone , then it can remove completly the APEO from the textile.