An air filter medium is provided with a porous film made from a polytetafluoroethylene, and a non-woven fabric laminated on at least one side of the porous film. The non-woven fabric has an apparent density satisfying the following equation: apparent density (g/cm3)1.5(basis weight (g/m2)/1000)0.11. The filter medium is produced by a process that includes a first step of producing a porous film formed from a polytetrafluoroethylene, and a second step of laminating a non-woven fabric on at least one side of the porous film on heating roll that has undergone a non-adhesive treatment. The filter medium is used to manufacture an air filter pack, while the air filter pack is used to manufacture an air filter unit.
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机译:空气过滤器介质包括:由聚四氟乙烯制成的多孔膜;以及在该多孔膜的至少一侧层叠的无纺布。该无纺布的表观密度满足以下等式:表观密度(g / cm 3 Sup>)<1.5(基重(g / m 2 Sup>)/ 1000) 0.11。过滤介质的生产方法包括:第一步,生产由聚四氟乙烯制成的多孔膜;第二步,将无纺布层压在加热辊上的多孔膜的至少一侧上。非粘性治疗。过滤介质用于制造空气过滤器组件,而空气过滤器组件用于制造空气过滤器单元。
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