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Surgical Face Masks For Health Care

2020/04/21

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     A surgical face mask is known as a procedure mask and purposely to be worn by health care professionals during operation procedures. It helps to catch the bacteria shed in liquid droplets and aerosols from the wearer's mouth and nose.
 
      The protective principle of masks is closely related to the materials and processes Related, materials used to retain particulate matter, such as mineral fibers, natural fibers or synthetic fibers and filter fibers, etc. The retention mechanism of particulate materials in the air includes gravity sedimentation interception, inertial impact interception, direct interception, and diffusion interception.
 
      The mask can block particulate matter in the airflow, which is the result of a comprehensive effect. More than 16 layers of cotton gauze masks can prevent some viruses from invading, but they are thick, sweltering, low in anti-virus efficiency, and have poor adhesion to the human face. It is determined that the filtering effect of the 16-layer cotton gauze mask is only 24%, and the filtering effect of the 24-layer cotton gauze mask is only 36.8%.
 
   At present, most disposable masks are mainly composed of three layers of non-woven fabrics. The inner and outer layers are mostly spunbond non-woven fabrics, and the middle layer is an electret polypropylene meltblown non-woven fabric or a nanofiber composite with higher filtration performance. material.

   The electret-treated polypropylene meltblown nonwoven fabric can use the coulomb force of its charged fibers to capture fine particles (virus aerosol, etc.), which greatly improves the filtering effect. The outer nonwoven fabric of medical masks also requires anti-blood high-pressure spray.
 

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