Sterile medical masks are further sterilized on the basis of the original sterilization, and the masks within the shelf life are completely sterile, and the external viruses can be well isolated after wearing, and the protection ability is more prominent.
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In addition to sterilization during the production process, non-sterile medical masks will not have other sterilization processes and procedures. Therefore, it will also carry a certain amount of bacteria, and the effect of defending against viruses is not so prominent. The price of non-sterile masks is slightly lower than the price of sterile masks.
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Medical masks are mostly made of one or more layers of nonwoven fabric. The main production processes include melt-blown, spunbonded, hot air or acupuncture, etc., which has the effect of resisting liquids, filtering particles and bacteria, and is a kind of medical protective equipment.