Disposable protective masks are generally divided into three layers, the outer layer and the inner layer are non-woven fabrics. These two layers have the effect of blocking pollutants and supporting the mask itself. These two colors are different. The first reason is that the outer layer is more stain-resistant and comes in black or blue. It is very important that the filter layer in the center of the Disposable Mask is made of filter cloth. The fiber density is high and the pores are small, which can block fine pollutants. Also, note that one end of the metal strip is the top of the mask. Don't turn it upside down.
The center layer melt blown nonwoven fabric is an important nonwoven fabric in Medical Face Mask. Melt-blown nonwovens block viruses and bacteria through the insulating effect of the fibers and the electrostatic adsorption effect. The fiber isolation and electrostatic adsorption effects of meltblown nonwovens are full to a certain extent. Once it reaches a certain level, it no longer has the effect of absorbing pathogens. Therefore, if the surgical mask is used continuously for 4 hours, it generally needs to be replaced.
The medical mask headband is two long belts that pass through the holes on both sides of the mask. The nose clip sits in the upper center of the filter layer and is placed between the fine and dense layers. Information is a metal or metal-plastic composite, which has both plasticity and certain strength. The Disposable Face Mask is easy to seal the nose when worn by the factory. It must be produced according to the requirements, so that the bacterial filtration capacity can reach more than 95%, which is an important function of medical masks. We classify the commonly used masks. There are three types of non-woven masks, and each style is used in different places. Under normal circumstances, double-layer masks are mainly used in food processing plants. There is no filter melt-blown fabric in the middle, but two pieces of non-woven fabric are sewn together. Its effect is to prevent saliva, nasal mucus, cold and other substances in the mouth from entering the food, and the weight is about 45 grams. Many masks are arched, which not only ensures a good fit with the face shape, but also maintains a certain space at the mouth and nose, making it comfortable to wear. If the medical gauze mask has good air permeability, both medical staff and other wearers can wear the mask more comfortably. The mask has two sides, white and blue. Put the white side inward and the side with the metal strip up. First, tie the two lower straps behind the neck and tighten them! Make the lower side of the mask reach the root of the chin; put the upper part of the mask Pull up the edge straps to cover the nose and mouth of the Face Mask, and pull the two straps on the top behind the ears and tie them tightly on the head, and they cannot be tied on the ears. Use the index fingers of both hands to squeeze the metal wire at the base of the nose on the mask to make it close to the skin of the nose, and then gradually move the index fingers to the sides so that the entire mask is close to the skin of the face. Disposable medical masks in Hunan generally use a multi-layer structure, referred to as SMS structure: a single-layer spunbond layer on both sides, and a single-layer or multi-layer meltblown layer in the middle. Masks generally use non-woven materials. Non-woven fabrics are non-woven fabrics relative to woven fabrics.
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