In fact, meltblown cloth is the main raw material of N90/N95/N99 masks at present. Melt-blown cloth is made of polypropylene as the main raw material. Due to the small fiber diameter of polypropylene, the produced meltblown cloth can play a good filtering role.
The reason why meltblown cloth can prevent viruses is mainly because the fiber diameter is small, which is smaller than many viruses and can play the role of a sieve to filter out viruses. Small molecular polymer fibers with static electricity, such as propylene, are easy to combine with static electricity and have strong adsorption capacity, which prevents viruses from entering, similar to electrostatic dust removal.
Extended data:
Precautions:
1. Every small package/box in the goods must have a certificate of conformity (it must be stamped), and the product or package or certificate of conformity must have the manufacturer's name, product name, specification, implementation standard, production batch, production date, shelf life, ingredients and materials, manufacturer, production address, quality inspection stamp, etc.
2. The standard of non-medical masks must be non-medical standards, and the FDA and CE EN 14683 signs cannot be printed on the product packaging.
3, the name of the production enterprise, must be displayed on the product or packaging or certificate (English business registration certificate).
4. The components printed on the mask are percentages (the medical device registration certificate is preferred, and the test report can be used if there is no one).
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