FR clothes are not a mystery or magic; the entire thing is an industrial process which is carried out with much concentration. Beginning from FR Lapco to many almost all other variety of attires can be made fire-resistant. There are six ways through which clothes can be made Flame Resistant; these are as follows:
1. Alum Method
Firstly create a mixture of 1 lb alum and a pint of hot water in a considerably big pan so that there is no issue of space. Next, the desired cloth to be transformed should be dipped entirely into the pan so that the whole thing gets nicely and completely wet.
Lastly, find a non-drip basket in which you have to carry the wet cloth and let it dry for some time. When you first get to wear, it may feel uncomfortable for its stiffness, but with regular usage, it will mould itself accordingly.
2. Ammonium Chloride and Ammonium Phosphate Method
Take up a large pan for making the blend of 1 cup ammonium chloride and 2 pints of water. Now to that add a half cup of ammonium phosphate and mix well the mixture so that it gets a uniform spread.
Once again dip the entire fabric into the mixture very well so that it appropriately gets drenched in the solution before you hang it to dry and make it totally ready for use.
3. Borax Method
This method is majorly done when material like ‘theatre scenery fabric’ and also natural fabrics and rayon is to be made in fire-resistant. This particular mixture should be done with great care; it should consist of 6 lbs borax, 5 lbs boric acid and 12 gallons or 45.4L water. Drench the cloth completely for better effect and let it dry for some time.
4. Variant Borax Method
Here you have to add together 7lbs borax, 3 lbs boric acid and 12 gallons or 45.4L water in a big container. Soak it very well. You may also repeat the process in case the dressed isn’t soaked enough and then lastly get it to dry. In the case of sheer and rayon clothes, 17 gallons or 64.4L water will be needed; the other measurements will remain the same.
The difference between this and the above process is that the latter is more soft and flexible and is more effective in preventing the growth of microorganisms.
5. Sodium Silicate Method
While carrying out this process, make sure you are wearing strong gloves so that the chemical does not affect your skin. Here you have to simply mix 1 oz. Sodium Silicate, also known as water glass along with 9 oz. water.
The cloth you want to transfer should be very well washed and dried before you dip it into the silicate solution. And lastly, leave it to dry again until totally void of water.
6. NFPA Method
For this, you have to form a mixture consisting of 9 and 4 oz. Borax powder and Boric Acid, respectively. And then add to that around 1 gallon or 3.8L of water. Make sure you mix it thoroughly in a huge so that the mixture holds uniform consistency throughout.
In this case, like the other methods, you can either dip the entire cloth into the mix and then let it dry; or you can also fill in a spray bottle with the mixture and then spray it on the fabric. Both the procedure will do.
These are the six popular and efficient ways that FR clothes are made. There may be other ways, too, but these six cannot be overdone.