Patent ID: 9731966
Date: 2017-08-15
CPC Classifications: B01D,B82Y

Claim:
1. A filter element, comprising: a non-pleated tubular ring of a depth media having a media thickness of at least about ¼ centimeter; the depth media comprising a first filter media sheet comprising at least one substrate layer of carrier fibers and at least one layer of fine fibers deposited thereon; the fine fibers being polymeric material; the carrier fibers having an average fiber diameter of greater than about 600 nanometer; and the fine fibers having an average fiber diameter of less than 800 nanometers carried by the carrier fibers; wherein the fine fibers have a size that is at least 4 times as small as the carrier fibers; wherein the first filter media sheet being wound at least partially about itself to create multiple layers of the first filter media sheet throughout the depth of the depth media; and wherein multiple layers of fine fibers are disposed in the media thickness, wherein the depth media has a coverage of fine fibers carried throughout the depth of at least 0.1 gram/m