Non-Woven Micron Felt Filter Bags

Design effort focuses on extending filter’s service life. The inner pre-filter layer is coarser than the primary filter layer to form graded pore depth structure, coarse contaminant particles are trapped and retained by the pre-filter layer in order to protect and prolong the service life of the primary layer.

Both the pre-filter layer and the primary filter layer are not singed so that the entirety of micro pore openings are preserved as it is. Such formulation is effective in slowing down the premature formation of filter cakes, therefore successfully extend filter’s service life. A layer of Spun-bond cover is used to prevent fiber migration. Lab tests show that the average service life is 85% to 110% longer than standard PP and PE bags, depending on application conditions.


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