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What Fabric Are Surgical Masks Made of?


From the point of view of mask materials, polypropylene high melting means that the special materials for non-woven fabrics become the best choice and produce polypropylene products with a melt mass flow rate of 33-41g / min. This meets the standard for polypropylene non-woven.


From the perspective of fiber application, polypropylene fiber special materials are used in non-woven fabrics, clothing fabrics, carpet yarns, medical surgical supplies, and civilian sanitary products.


In terms of medical and health, non-woven fabrics made of polypropylene non-woven fabrics can be used in disposable surgical gowns, sheets, masks, covers, liquid absorption pads, and so on. Non-woven masks are made of two layers of fiber non-woven fabrics, which are professionally used for medical treatment, and an additional layer of filter-solubilized spray-resistant cloth with 99.999% anti-bacteria is added by ultrasonic welding. Non-woven masks are made of environmentally friendly plastic strips at the bridge of the nose. They do not contain any metal. They are breathable and comfortable.


Filtration efficiency: Under the condition of air flow (30 ± 2) L / min, the filtration efficiency for aerodynamic median diameter (0.24 ± 0.06) μm sodium chloride aerosol is not less than 30%;


Bacterial filtration efficiency: Under specified conditions, the filtration efficiency for aerosols of Staphylococcus aureus with an average particle diameter of (3 ± 0.3) μm is not less than 95%;


Breathing resistance: In the condition of filtering efficiency and flow rate, the inhalation resistance does not exceed 49Pa, and the exhalation resistance does not exceed 29.4Pa.


Among them, the second criterion is to ensure the filtering effect of bacteria. The filtration efficiency of Staphylococcus aureus bacteria aerosol is not less than 95%, which is the origin of the N95 concept. Therefore, although the N95 mask is not a medical mask, it meets the 95% filtration efficiency standard and can better fit the human face, so it can also play a good role in virus prevention.


The main material that brings the virus filtering effect to these two types of masks is a very fine and electrostatic inner filter cloth—meltblown non-woven fabric.The main material of meltblown non-woven fabric is polypropylene, which is an ultra-fine electrostatic fiber cloth that can capture dust. When the droplets containing pneumonia virus approach the meltblown nonwoven fabric, they will be electrostatically adsorbed on the surface of the nonwoven fabric and cannot penetrate.


This is how this material isolates germs. After the dust is captured by the ultra-fine electrostatic fibers, it is extremely difficult to be detached by washing, and washing with water will also destroy the electrostatic suction capacity. Therefore, this mask can only be used once. Suitable for flat mask meltblown filtration levels are: ordinary, BFE95 (95% filtration efficiency), BFE99 (99% filtration efficiency), VFE95 (99% filtration efficiency), PFE95 (99% filtration efficiency), KN90 (90% filtration efficiency ).


Making of medical masks

Medical surgical masks are generally made of three layers of non-woven fabric. The materials are spunbond nonwovens, meltblown nonwovens and spunbond nonwovens. You can also use short fibers to improve the skin feel, that is, ES hot-rolled nonwovens, meltblown nonwovens, and spunbond nonwovens. The outer layer of the mask has anti-fog design, the middle layer is filtered, and the memory absorbs moisture. 20 grams of meltblown cloth is generally selected.


The N95 cup-shaped mask is composed of needle-punched cotton, melt-blown cloth, and non-woven fabric. Its meltblown cloth usually uses 40 grams or more, plus the thickness of needle punched cotton, so it looks thicker than a flat mask. Its protective effect can reach at least 95%.

What Fabric Are Surgical Masks Made of?
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