A NONWOVEN FOR AIR FILTRATION AND A PREPARATION METHOD THEREOF

摘要

Filament spunbond non-woven and a manufacturing method thereof are provided to offer excellent filter efficiency by depth-typed filtration generated by structure become gradually narrower towards an air outlet. Filament spunbond non-woven for an air filter is multi-layered filament and includes denier become gradually smaller towards an air outlet. The filament spunbond non-woven comprises an air inlet consisting of polyester filament fiber(10) of which fineness is 4 - 6 denier and the air outlet consisting of polyester filament fiber of which fineness is 2 - 3 denier. The weight per the unit area of spunbond non-woven is 130 -200 g/m^2.