How to improve face mask filtration efficiency?
What do you think of a high-quality anti-viral face mask? From the long-term wearing experience, you can easily see that those masks with high filtration efficiency, such as KN95 / N95 masks, are also very easy to breathe! The key to achieving this goal is meltblown fabrics. In this article, we will share some tips of technicians in melt-blown production lines engaged in this industry for decades.
The manufacturing of melt-blown fabric production equipment is not complicated, the main thing to overcome is the manufacturing process. Due to the need to match parameters such as temperature, air pressure, mold, speed, etc., it is necessary to constantly grind and adjust the product to obtain the best results (according to the melt-blown core index test, and high filtration efficiency and low breathing resistance).
1. Ways to improve filtration efficiency
Increase hot airflow or temperature (increasing fiber fineness, reducing porosity, improving trapping capacity, but increasing resistance).
Increase the electrostatic voltage (polarize the fiber, increase the electrostatic field energy of the fiber, and improve its adsorption capacity).
Add powder or other electrons to the raw material (to increase the chargeability and storage time of the fibers so that they can carry more charge time).
Increase the suction under the net (increasing the density of the fiber and improving the ability of the fiber to capture) (much larger grams, not commonly used).
Properly reduce the output (in the same process, the amount of extrusion becomes smaller, the fiber becomes thinner, and the electrical resistance increases).
Increase the working temperature of the die (tip) etc. (better melt flow, finer fibers).
Increase the spinning ambient temperature.
Properly increase the amount of powder to be added.
2. Ways to reduce resistance
Reduce hot airflow or temperature (fiber coarsening, high porosity, low resistance and reduced efficiency).
Increased DCD (increased bulkiness of fibers, high porosity and reduced efficiency).
Reduce the spinning ambient temperature (fully cool the fiber, fluffy structure, increase porosity, and use hot air to reduce resistance and increase efficiency).
Reduce the suction under the wire (dense fluffy fibers, greater porosity, more pronounced weight).
Reduce the working temperature (fibrous thickening and increase porosity) in the heated area (eg die (tip)).
Increase the metering pump.
Appropriately reduce grams (within internal control).
3. Ways to reduce resistance and increase efficiency at the same time
Increase the DCD, while appropriately increasing the flow or temperature of the hot air to reduce air absorption at the bottom of the net (increasing the fineness and bulkiness of the fibers).
Improve the fiber fineness while reducing the spinning ambient temperature.
Improve the bulkiness of the fiber, at the same time increase the electrostatic voltage and increase the amount of powder added.
Hope you can find useful information. If you want to buy instead of producing this kind of melt-blown non-woven fabric with high filtration efficiency and low breathing resistance to produce anti-virus masks, please check this page.
More https://feiyuepaper.en.made-in-china.com/product-group/XMnJlgyPgLcD/Protective-Equipment-catalog-1.html
The manufacturing of melt-blown fabric production equipment is not complicated, the main thing to overcome is the manufacturing process. Due to the need to match parameters such as temperature, air pressure, mold, speed, etc., it is necessary to constantly grind and adjust the product to obtain the best results (according to the melt-blown core index test, and high filtration efficiency and low breathing resistance).
1. Ways to improve filtration efficiency
Increase hot airflow or temperature (increasing fiber fineness, reducing porosity, improving trapping capacity, but increasing resistance).
Increase the electrostatic voltage (polarize the fiber, increase the electrostatic field energy of the fiber, and improve its adsorption capacity).
Add powder or other electrons to the raw material (to increase the chargeability and storage time of the fibers so that they can carry more charge time).
Increase the suction under the net (increasing the density of the fiber and improving the ability of the fiber to capture) (much larger grams, not commonly used).
Properly reduce the output (in the same process, the amount of extrusion becomes smaller, the fiber becomes thinner, and the electrical resistance increases).
Increase the working temperature of the die (tip) etc. (better melt flow, finer fibers).
Increase the spinning ambient temperature.
Properly increase the amount of powder to be added.
2. Ways to reduce resistance
Reduce hot airflow or temperature (fiber coarsening, high porosity, low resistance and reduced efficiency).
Increased DCD (increased bulkiness of fibers, high porosity and reduced efficiency).
Reduce the spinning ambient temperature (fully cool the fiber, fluffy structure, increase porosity, and use hot air to reduce resistance and increase efficiency).
Reduce the suction under the wire (dense fluffy fibers, greater porosity, more pronounced weight).
Reduce the working temperature (fibrous thickening and increase porosity) in the heated area (eg die (tip)).
Increase the metering pump.
Appropriately reduce grams (within internal control).
3. Ways to reduce resistance and increase efficiency at the same time
Increase the DCD, while appropriately increasing the flow or temperature of the hot air to reduce air absorption at the bottom of the net (increasing the fineness and bulkiness of the fibers).
Improve the fiber fineness while reducing the spinning ambient temperature.
Improve the bulkiness of the fiber, at the same time increase the electrostatic voltage and increase the amount of powder added.
Hope you can find useful information. If you want to buy instead of producing this kind of melt-blown non-woven fabric with high filtration efficiency and low breathing resistance to produce anti-virus masks, please check this page.
More https://feiyuepaper.en.made-in-china.com/product-group/XMnJlgyPgLcD/Protective-Equipment-catalog-1.html
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