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 micron level or even nano level), large specific surface area, high fiber mesh porosity, good fiber mesh uniformity, soft and fluffy, especially suitable for filtration, liquid absorption and thermal insulation materials, etc.; fiber and fiber mesh have low strength and low orientation Low, poor wear resistance.
Melt-blown non-woven composite filter material is prepared using a 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 alkali, 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.