METHOD OF FILTERING PARTICULATES FROM THE AIR USING A COMPOSITE FILTER SUBSTRATE COMPRISING A MIXTURE OF FIBERS

摘要

A method of filtering air using a composite filter substrate having a mixture of fiber shapes and sizes layer is disclosed. The method provides improved particle cleaning efficiency.

主权项

1. A method of filtering particulates from the air comprising the steps of:
a. providing an air filtering device in a room, wherein said device comprises
a fan; andan air filter comprising:
a first component layer comprising:
a mixture of fibers comprising shaped fibers having at least two different deniers, wherein each fiber in said mixture comprises a denier from about 0.7 dpf to about 7.0 dpf;a plurality of hollow protrusions and recessed regions, wherein said hollow protrusions comprise a protruded length from about 3 mm to about 16 mm and a non-protruded length from about 2 mm to about 14 mm and a protruded height from about 0.5 mm to about 3 mm, and wherein said hollow protrusions and recessed regions comprise a planar area ratio from about 40:60 to about 60:40; anda second component layer comprising at least about 50% of fibers having a denier from about 0.9 dpf to about 2.0;a plurality of connections connecting said first component layer and said second component layer; and b. activating said fan to move about 70 to about 150 CFM of air to said air filter.