METHOD OF FILTERING PARTICULATES FROM THE AIR USING A COMPOSITE FILTER SUBSTRATE COMPRISING A MIXTURE OF FIBERS
First Claim
Patent Images
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 comprisesa fan; and
an 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; and
a 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.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
-
Citations
19 Claims
-
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; and an 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. 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; and an air filter bag comprising; a first component layer comprising; a mixture of tri-lobal 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 a second component layer comprising at least about 50% of fibers having a denier from about 0.9 dpf to about 2.0; and a plurality of connections connecting said first component layer and said second component layer; b. activating said fan to move from about 70 to about 150 CFM of air to said air filter bag, whereby greater than 40% of particulates of about 1 microns to about 10 microns are removed from the air in said room. - View Dependent Claims (17, 18)
-
-
19-32. -32. (canceled)
Specification