N95 mask or N95 respirator is a protective device that filters the pathogenic or non-pathogenic airborne particles like dust, bacteria, viruses, etc., and thus provides protection to the wearer. These masks filter about 95% of airborne particles. That’s why they are known as N95 masks. Previously, the N95 masks manufactured in USA were worn by doctors, surgeons, health care professionals, and other workers only. But now the world is facing a global pandemic and coronavirus has compelled people to wear masks, sanitize their hands, and take some precautions while going out of the house.
Materials used in the manufacturing of N95 masks
The N95 masks manufactured in the USA are of great importance. Because of their non-woven material, they filter the airborne particles very efficiently. The material of the masks is very thin and has a size of a few microns. So when the particles make their way through the thick network of fibers, they get trapped. The N95 masks manufactured in USA has four layers which are made up of different materials. The materials present in N95 face masks are mentioned below:
The first layer (outer layer) is spun bonded and is made up of polypropylene. A hydrophilic plastic is also used to coat the outermost active layer. This layer act as a barrier against the environment.
A polyester or cellulose makes the second layer of N95 face masks and this layer is also treated with zinc and copper ions. In addition, the first and second layers are treated with a variety of compounds that inactivate the viruses by using different mechanisms. Besides, this is a nonwoven filtration layer.
The third layer of N95 respirators contains a melt-blown filter material which is polypropylene and it determines the efficiency of the filtration.
Again, the fourth (innermost) layer is spun bonded and consists of polypropylene. This layer is a barrier against anything coming from the wearer’s exhalation.
Head-loop and nose strip
In addition to these four layers, the N95 mask has a head-loop or straps and a nose clip. The strap is mostly elastic in nature and is made up of spandex or polyamide. The purpose of this strap is to secure and fix the mask on the wearer’s face and to fix this strap on the mask, staples made of steel are used.
The strip present above the nose is called a nose clip and is made up of aluminum. This strip provides a tight and strong seal around the face and the nose and thus does not allow the mask to move at all.
N95 masks also contain an exhalation valve which contains a valve membrane, seat, and a cover. The valve membrane is made up of neoprene or silicone rubber while the cover and seat are mostly made up of plastic.
All the materials used in the manufacturing of N95 masks are typical materials that are safe to use and are approved by World Health Organization (WHO). If you are looking for a reliable vendor for buying genuine masks, visit ALGhealth.com. They have a fine variety of products manufactured under strict supervision and have the highest-quality for effective use. For further information visit the website now.