Since the 1990s, my country’s non-woven filter materials have entered a period of comprehensive development, and a variety of non-woven filter materials have been successfully developed, among which melt-blown non-woven composite filter materials are one of them.
Melt-blown non-woven composite filter material is made of PP as the main material. The fiber diameter can reach 1~5 microns. Its unique capillary structure of ultra-fine fibers increases the number and surface area of fibers per unit area. Melt-blown non-woven composite filter material The material is a natural oil-absorbing material. PP has almost no water absorption but good oil absorption.
As a result, the melt-blown cloth has good filtering, shielding, thermal insulation and oil absorption properties.
The melt-blown process has a short process, simple equipment (no equipment for consolidating the fiber web), and high production efficiency; it consumes a lot of energy and costs a lot, which has a certain negative impact on the expansion of its application fields; the fibers are extremely fine ( The fiber diameter reaches the micrometer level or even the nanometer level), has a large specific surface area, high fiber web porosity, good fiber web uniformity, soft and fluffy, and is especially suitable for filtration, liquid absorption and thermal insulation materials; the fiber and fiber web have low strength and low orientation. Low, poor wear resistance.
Melt-blown non-woven composite filter material is prepared using unique biaxial stretching technology, which can ensure complete retention of bacteria and other impurities while having a large flux.
The material is resistant to high temperatures, strong acids and alkalis, and has wide chemical applicability. When used for gas filtration, it can achieve 100% retention of various phages, bacteria and particles above 0.02um.
PTFE microporous membrane has high filtration efficiency and can meet the filtration efficiency level requirements of sub-high efficiency, high efficiency and ultra high efficiency air filters.
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