We are more than happy to share information on how to make the home-made masks with limited materials that can be easily obtained in lock down situations.
1. Select the front material of your choice;
100% shirt Cotton, T- shirt cotton filtration efficiency (% ) @0.3 um particle size is 69% , Bed sheets, Kitchen towels, Denim used or new Vacuum cleaner bag filtration efficiency (% ) @0.3 um particle size is 95% (the best for making rectangle masks).
2. Wash at 60 degrees before you can start sewing the masks.
3. Make a pocket to put your own filter in.
one Kitchen paper filtration efficiency (% ) @0.3 um particle size is 73.7%,so I put two kitchen papers and folded them in three layers as the filter for our masks.
4. Lining part.
I use Cotton 100% muslin textile or nice soft cotton 100%.
because it touches your mouth so it is important to have a textile which provides comfort.
For this lining, I preferred using non-used textile.
Wash it first at 60 degrees before you begin sewing.
5. Elastic Ear Loops.
It may not be possible to always find the elastic ear loops used for face masks, but you can find alternatives in your home like rubber bands, shoelaces, strings, hair bands, etc. If not, you can also use your own T-shirt, cut 1 cm wide, to make your own ear loops - it is not that strong and elastic, so you need to adjust the size by yourself with a knot.
• Classic length for the masks: Adults is 30 cm, Small kid is 15 cm, Big kid / Teenagers is 20cm, but you should be able to adjust your own individual size each time to make sure your mask is perfectly tight to use.
6. Nose Wire.
You need to mold or pinch the wire to the shape of your nose to ensure your mask fits your nose.
Here is an image that shows you how you can sew your nose wire into the masks with any wire you can find in your home.
With thick cotton or cotton textiles, it is important to use a harder wire to make the form, especially for Europeans who have a higher nose than Asians. So, I found making paper clips is really good. The size can still be sewn at home with a sewing machine, and the wire is hard enough to create the form and not break it.
If you are lazy to wash your masks with soap everytime, with these paper clips and my sewing technique, you can put your mask into a washing machine and wash it at 60 degrees and you will then be able to avoid removing the wire each time. But, you must air dry your masks with iron sanitization.