| Patent application number | Description | Published |
|---|
| 20080274312 | Bag house filters and media - A bag filter having a support structure clothed in a filter bag. The cloth of the filter bag is a composite of at least one substrate layer and at least one nanoweb bonded thereto in a face-to-face relationship. The nanoweb is positioned at the surface of the filter bag first exposed to the hot particle laden gas stream and can have a basis weight of greater than about 2 gsm. | 11-06-2008 |
| 20080274658 | Needlepunched nanoweb structures - A composite sheet of a nanoweb bonded to a second web, such that fibers from the second web protrude through the nanoweb in a multiplicity of discontinuous regions. | 11-06-2008 |
| 20080302242 | Process for forming a laminate of a nanoweb and a substrate and filters using the laminate - A process for forming a laminate of a low basis weight nanoweb and a substrate includes forming a nanoweb on the surface of a collection scrim, and subsequently bringing the nanoweb into contact with a substrate coated with adhesive. The laminate is suitable for use as a gas filtration medium. | 12-11-2008 |
| 20090049816 | Filter felts and bag filters comprising blends of fibers derived from diamino diphenyl sulfone and heat resistant fibers - This invention relates to a filter felt and bag filters comprising an intimate staple fiber blend of 20 to 75 parts by weight polymeric staple fiber containing a polymer or copolymer derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof; and 25 to 80 parts by weight of a heat resistant staple fiber selected from the group consisting on meta-aramid fiber, acrylic fiber, polyphenylene sulfide fiber, and para-aramid fiber; based on 100 parts by weight of the polymeric fibers and heat resistant fibers in the felt. | 02-26-2009 |
| 20090255226 | THERMALLY STABILIZED BAG HOUSE FILTERS AND MEDIA - A bag filter having a support structure clothed in a filter bag. The cloth of the filter bag is a composite of at least one substrate layer and at least one nanoweb bonded thereto in a face-to-face relationship. The nanoweb is positioned at the surface of the filter bag first exposed to the hot particle laden gas stream and can have a basis weight of greater than about 0.1 gsm. | 10-15-2009 |
| 20110011043 | BAG FILTER COMPRISING SCRIMLESS FILTER FELT OF META-AND-PARA-ARAMID STAPLE FIBER - This invention relates to a bag filter having a tubular section, a closed end, and an open end; the tubular section comprising a scrimless filter felt consisting essentially of a needle-punched batt of an intimate blend of fibers consisting of 50 to 79 percent by weight meta-aramid staple fiber, and 21 to 50 percent by weight para-aramid staple fiber; said needle-punched batt having a basis weight of from 10 to 17 ounces per square yard (340 to 580 grams per square meter). | 01-20-2011 |
| 20110011044 | BAG FILTER COMPRISING FILTER FELT OF META-ARAMID AND PARA-ARAMID STAPLE FIBER - This invention relates to a bag filter having a tubular section, a closed end, and an open end; the tubular section comprising a filter felt consisting essentially of a batt of an intimate blend of fibers needle-punched to a woven scrim, the blend of fibers consisting of 50 to 70 percent by weight meta-aramid staple fiber, and 30 to 50 percent by weight para-aramid staple fiber; said filter felt having a total basis weight of from 10 to 19 ounces per square yard (340 to 580 grams per square meter). | 01-20-2011 |
