SOUTHERN FELT COMPANY, INC Patent applications |
Patent application number | Title | Published |
20150114230 | Pleatable Filter Media - This invention is directed to a filter media for manufacturing pleated filters comprising a non-woven, needle punch felt including a blend of a first polyester fiber and a bi-component fiber wherein said bi-component fiber has a sheath and a core wherein said sheath has a melting point above 110° C. and said nonwoven felt has an efficiency of greater than 89% for particles size of 3 to 10 μm as determined by testing method ASHRAE 52.2. The invention can include a top portion and a bottom portion manufactured from a web made from a carding process that is cross lapped, cut and overlapped so that said top portion and said bottom portion are entangled by a needle punching process to create a homogeneous arrangement prior to applying heat and pressure to stiffen the media for pleating. | 04-30-2015 |
20140250848 | Filter Media - A nonwoven filter media comprising: polyphenylene sulfide fibers, an inorganic fibers wherein said filter media exhibits physical properties taken from the group consisting of: (a) a clean gas concentration of less than 0.1 mg/m | 09-11-2014 |
20140083926 | Filter Medium For Manufacturing Filters - The above objective are accomplished by providing a filter medium for use in manufacturing of hydraulic fluid and air filters comprising: an upstream layer comprised of nonwoven fiber having a denier between about 5.0 and 7.0 and a weight of between about 3.0 and 5.0 ounces a scrim and a cap layer comprising a fiber having a denier between about 0.1 and 5.0 denier and a weight between about 2.0 and 4.0 ounces carried by said upstream layer and disposed downstream from said upstream layer. The upstream layer, scrim and cap layer can have a weight of about 4.0 ounces, 2.0 ounces and 3.0 ounces respectively. A downstream layer can be disposed between said upstream layer and said cap layer. | 03-27-2014 |
20140083065 | Conductive Filter Media - The above objectives are accomplished according to the present invention by providing a filter medium for operating environments needing static electricity dissipation to help reduce ignition sources comprising: a substrate of non-woven felt including a polymeric fiber; a conductive scrim having a grid of conductive filaments adjacent to said substrate layer; and, a top layer of non-woven felt including a polymeric fiber and copolymer fiber blend having a melt temperature greater than 100° C. wherein said substrate layer, said conductive scrim and said top layer are manufactured into said filter medium by mechanical web formation. | 03-27-2014 |
20130276417 | Conductive Filter Media - The above objectives are accomplished according to the present invention by providing a filter medium for operating environments needing static electricity dissipation to help reduce ignition sources comprising: a substrate of non-woven felt including a polymeric fiber; a conductive scrim having a grid of conductive filaments adjacent to said substrate layer; and, a top layer of non-woven felt including a polymeric fiber and copolymer fiber blend having a melt temperature greater than 100° C. wherein said substrate layer, said conductive scrim and said top layer are manufactured into said filter medium by mechanical web formation. | 10-24-2013 |