Filter material with nonwoven layer and melt blown layer

摘要

The filter material has a nonwoven layer having a composite fiber and an average diameter (DL) 1.8 μ It has a melt blown layer containing polyester fibers less than m. When the contact pressure is 0.1 bale (10 kPa), the thickness of the nonwoven layer is less than 0.4 mm. At least 25% diameter (d) of the polyester fiber of the melt blown layer is μ Less than m.No selection