Entries |
Document | Title | Date |
20080236120 | Prefilters for Devices with Air Filter - Prefilter improves efficiency of cleaning process by preventing clogging of filter with dirt or other particles. The polished surface allows easy removal of dirt with one shake. Prefilter extends life of filter. | 10-02-2008 |
20080302072 | Filter medium - The present invention relates to a filter composed of a multi-ply filter medium, which comprises at least one non-woven stiffening layer, at least one filtration layer, at least one covering layer and where necessary at least one non-woven microfibre layer, the non-woven stiffening layer comprising fibres of synthetic polymers and the fibres being both partially oriented and oriented fibres. | 12-11-2008 |
20090071113 | FILTER ELEMENT - A filter element includes an upstream side layer structure disposed on an upstream side in a flow direction of air to be filtrated and formed of a non woven fabric formed by laminating chemical fibers, and a downstream side layer structure disposed on a downstream side in the flow direction of the air and including a plurality of layers including chemical fiber non woven fabric layers formed by laminating chemical fibers. The upstream side layer structure has a fiber density relatively smaller than that of the downstream side layer structure. The downstream side layer structure includes a natural fiber layer such as cotton layer disposed between the chemical fiber non fabric layers, and an oil is impregnated from the upstream side layer structure to the natural fiber layer in the downstream side layer structure. | 03-19-2009 |
20090199524 | AIR FILTRATION ARRANGEMENTS HAVING FLUTED MEDIA CONSTRUCTIONS AND METHODS - Filter arrangements include a barrier media in the form of fluted media treated with a deposit of fine fibers. The media is particularly advantageous in high temperature (greater than 140 to 240° F.) systems. Such systems may include engine systems, gas turbine systems, and fuel cell systems. Filter arrangements may take the form of media packs having a circular cross-section or a racetrack shaped cross-section, or media packs formed in a panel configuration. | 08-13-2009 |
20100064645 | FINE FIBER MEDIA LAYER - Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials. | 03-18-2010 |
20100139224 | FILTER MEDIA WITH NANOWEB LAYER - A filter media for filtering particulates from air or other gases contains a membrane, and a depth filtration layer upstream and in fluid contact with the membrane. The depth filtration layer contains a nanoweb layer and a prefiltration layer upstream of and in fluid communication with the nanoweb layer. The prefiltration layer may be a nonwoven, and in one embodiment, specifically a melt blown nonwoven which may also be charged. | 06-10-2010 |
20100192529 | FILTER ELEMENT FOR A COALESCING FILTER - The invention relates to a filter element for a coalescing filter, comprising an outer support sleeve, a coalescing layer and a filter medium, wherein the coalescing layer is substantially structurally separate from the filter medium. | 08-05-2010 |
20100199620 | FILTER ARRANGEMENT FOR AN AIR INTAKE SYSTEM - A filter arrangement for filtering a fluid or gaseous medium, in particular in a motor vehicle, comprising a housing ( | 08-12-2010 |
20100218471 | HEPA (H-10) PERFORMANCE SYNTHETIC NONWOVEN AND NANOFIBER COMPOSITE FILTER MEDIA - A composite filter media structure and an associated method of making are provided. The structure includes a base substrate that includes a nonwoven fabric substrate formed from a plurality of bicomponent synthetic fibers using a spunbond process. The composite filter media structure includes a nanofiber layer deposited on one side of the base substrate by an electro-blown spinning process. In one aspect, the base substrate and the nanofiber layer are configured to provide at least an 85% filtration efficiency measured in accordance with an ASHRAE 52.2-1999 test method. In another aspect, the nanofiber layer has a basis weight of about 2.0 g/m | 09-02-2010 |
20100242424 | HONEYCOMB FILTER - There is disclosed a honeycomb filter which can perform an NO | 09-30-2010 |
20100269464 | FILTER MEDIUM AND METHOD OF MANUFACTURING THE SAME AND FILTER UNIT - Provided is a filter medium including a porous polytetrafluoroethylene (PTFE) membrane and a gas-permeable supporting member that are integrated to ensure sufficient stiffness, having excellent gas permeability, and providing excellent bonding between respective layers included in the filter medium. The gas-permeable supporting member includes: a substrate having gas-permeability; and a fiber layer that is placed on the substrate so as to be in contact with the porous PTFE membrane. The gas-permeable supporting member has a structure in which fibers of the fiber layer enter into the substrate and are entangled with the substrate so that the fiber layer is bonded to the substrate. The fiber layer contains polyolefin-containing fibers that are bonded to the porous membrane. | 10-28-2010 |
20100269465 | NONWOVEN FOR AIR FILTRATION AND A PREPARATION METHOD THEREOF - The present invention relates to a spunbonded filament nonwoven fabric and a method of preparing the same, and particularly to a multilayered spunbonded filament nonwoven fabric of which the fineness of the filaments decreases from an air inlet part toward an air outlet part, and a method of preparing the same. The spunbonded nonwoven fabric of the present invention can be used as an air filter for power generation equipment for a gas turbine, because it can reduce a pressure loss, promote filter efficiency, and extend the lifetime for use by using fiber layers having different denier. | 10-28-2010 |
20110067368 | FILTER ARRANGEMENT AND METHODS - A filter element includes a single seamless media pack having first and second opposite ends and first and second lateral sides extending between the first and second ends. The media pack also has pleats extending between the first and second ends and a first cross-section defined between the first and second lateral sides. The first cross-section having at least one outward projection that defines an internal radius of at least ¼ inch wherein a plurality of pleats of the media pack are fanned around the internal radius. A first end cap is secured to the first end of the media pack while a second end cap secured to the second end of the media pack. Additionally, a frame member is secured to the first end cap, second end cap, the first lateral side, and the second lateral side. A pre-filter is usable with described filter arrangements. | 03-24-2011 |
20110067369 | FINE FIBER MEDIA LAYER - Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials. | 03-24-2011 |
20110138760 | SELF-SUPPORTING PLEATED FILTER MEDIA - The present invention is a filter that includes a length of filter media and a continuous, substantially nonlinear adhesive strand. The filter media has a front face and a rear face. The filter media has a plurality of pleats defined by a plurality of fold lines, each fold line being intermediate oppositely sloping first and second wall surfaces. The plurality of fold lines comprise a first plurality of pleat tips and a second plurality of pleat valleys. The adhesive strand is provided on the front face of the filter media in discontinuous contact with the filter media. The adhesive strand contacts the filter media at a pleat tip and contacts the filter media at a portion of a first wall surface and contacts the filter media at a portion of a second wall surface. | 06-16-2011 |
20110162336 | Filter for Removing Particles from Gas Flows - A filter for particle cleaning of impurities in gas flows must be compact and also as effective as possible, including having a pressure drop as low as possible. | 07-07-2011 |
20110162337 | WAVED FILTER MEDIA AND ELEMENTS - Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications. | 07-07-2011 |
20110192125 | PLEATABLE PTFE FILTER MEDIA WITH EPTFE MEMBRANE - A filter media including a scrim, a polytetrafluoroethylene (PTFE) media substrate upon the scrim, and a layer of expanded polytetrafluoroethylene (ePTFE) membrane adhered to the PTFE media substrate on the scrim. The filter media is pleatable and has air permeability of approximately 3-10 cubic feet/min at a 0.5 inch H2O pressure drop and an original filtration efficiency greater than 99.0% when tested in an unused, unpleated condition with a 0.3 micron challenge aerosol at a flow rate of 10.5 feet/min and when tested after a cleanable dust performance test according to ASTM D6830. | 08-11-2011 |
20110239601 | PLUGGED HONEYCOMB STRUCTURE AND METHOD FOR MANUFACTURING THE SAME - In a plugged honeycomb structure | 10-06-2011 |
20110252757 | HELICAL STRAPPING METHOD FOR HIGH TEMP PLEATED FILTERS - A filter cartridge that includes a filter media. The media is pleated and the pleats are arranged into a tube about an axis with a first pleat proximate a last pleat. The filter cartridge includes a strap that has first and second end portions and that extends at least one revolution around the pleated media tube in a helix such that the first and second end portions of the strap are axially displaced from each other. The first and last pleats of the media are attached to each other and the first and second end portions of the strap are attached to the media. The filter cartridge may be made by an associated method. In one specific example, a stitching attaches the strap to the media. | 10-20-2011 |
20110252758 | AIR FILTER CARTRIDGE - Filters capable of dissipating static charges. One example includes a filter media pack comprising fluted media secured to facing media; the fluted media having cellulose fibers; and the fluted media including an amount of carbon black sufficient to impart a static charge dissipative property thereto. One example includes an air filter cartridge having a filter media pack comprising fluted media secured to facing media; the fluted media comprising cellulose fibers; the fluted media having at least one side coated with a static charge dissipative amount of a metallic coating. These filters are useable in, for example, dust collectors. | 10-20-2011 |
20110277431 | AIR FILTRATION MEDIA PACK, FILTER ELEMENT, AIR FILTRATION MEDIA, AND METHODS - An air filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a first face of the filtration media pack to a second face of the filtration media pack. A first portion of the plurality of flutes are closed to unfiltered air flowing into the first portion of the plurality of flutes, and a second portion of the plurality of flutes are closed to unfiltered air from flowing out of the second portion of the plurality of flutes so that air passing into one of the first face and the second face of the media pack and out the other of the first face and the second face of the media pack passes through media to provide filtration of the air. The fluted sheet includes repeating internal peaks facing toward the facing sheet and repeating external peaks facing away from the facing sheet. In addition, the fluted sheet can include at least one ridge extending along at least 50% of the flute length between an internal peak and an adjacent external peak. Additional characterizations of an air filtration media pack, air filtration media, and methods of making and using are provided. | 11-17-2011 |
20110289894 | FILTER ELEMENT OF MICROGLASS & NONWOVEN SUPPORT LAYER MEDIA - A composite filter element is provided. The composite filter element is configured for filtering fluid. The composite filter element includes a microglass media of glass fibers and a scrim laminated to the microglass media. The scrim is configured to provide support for the microglass media. In one aspect, the composite filter element has a filtration efficiency greater than or equal to about 99.5% for capturing a particle size of about 0.3 microns. In another aspect, a frame is provided that is configured to hold the at least one composite filter element in a V-shaped pocket and a basis weight of the microglass media and the scrim is at least about 90 g/m | 12-01-2011 |
20120023877 | AIR FILTER ARRANGEMENT; ASSEMBLY; AND, METHODS - An air filter media construction or arrangement is disclosed. The air filter media construction or arrangement includes strips of media comprising corrugated sheets secured to facing sheets and forming inlet and outlet flutes secured to one another in a stack. Blocked stacked arrangements and slanted stacked arrangements are shown. Such stacked media is provided with molded end pieces to secure and seal opposite side edges of the media strips. Also described are serviceable filter cartridges and air cleaners including the filter cartridges. Methods of assembly and use are also provided. | 02-02-2012 |
20120144790 | PLEATABLE COMPOSITE FILTER MEDIA - A pleatable, high efficiency composite gas filtration media is provided. The media includes an essentially boron free chopped strand glass backer layer and media layer comprising a synthetic material. The composite media exhibits excellent pleatability, low boron out gassing, and low organic out gassing, with filtration performance comparable to existing commercial membrane composites. | 06-14-2012 |
20120198804 | HVAC Air Filter with Peel Layers - The invention is directed toward an HVAC air filter having peel layers so as to reduce the need for frequent changing of the air filter by increasing its lifespan. Such air filter first includes a rectangular exterior housing having a top and bottom side. Positioned between both sides are a plurality of corrugated filter sheets, each filter sheet being MERV 4 compliant. Preferably, the air filter includes a first sheet, a second sheet, and a corresponding third sheet each mirroring the size and orientation. Positioned between the third sheet and the bottom side of the exterior housing is additional filter media to aide in filtration. Preferably, each filter sheet includes a pull or tab at the distal end to aide in peeling away each sheet to expose the sheet below. | 08-09-2012 |
20120204527 | FINE FIBER MEDIA LAYER - Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials. | 08-16-2012 |
20120210689 | AEROSOL SEPARATOR; AND METHOD - Crankcase ventilation arrangements are shown. Preferred wet laid media materials, for use in such arrangements are described. Also described and shown are example crankcase ventilation components, parts for use with a preferred media described and characterized. | 08-23-2012 |
20120216496 | FILTER CLOTH FOR DUST COLLECTOR - The present invention provides a filter cloth for a dust collector which shows low pressure loss, no clogging, superior dust shaking-off performance, and durability for continuous use without impairing collection performance, even under such dust collection conditions as high speed filtration and high dust concentration. The filter cloth for a dust collector relevant to the present invention is a filter cloth which is made by laminating and integrating a filtration layer of a nonwoven fabric layer consisting of a thermoplastic fiber and a support layer consisting of a woven fabric layer, characterized in that at least filtration surface layer of said laminated and integrated filter cloth has a concave-convex shape having a height from hill part to trough part of 1.6 to 20.0 mm. | 08-30-2012 |
20120240538 | HONEYCOMB FILTER AND MANUFACTURING METHOD OF THE SAME - There is provided a honeycomb filter including: a honeycomb base material; plugged portions; and a porous collecting layer disposed on the surface of the partition wall parent material in at least the remaining cells. The collecting layer has a constitution in which a plurality of particles combine or intertwine with one another, and the collecting layer includes flat plate-like particles as the plurality of particles. The plurality of particles are particles in which an average long diameter is 0.2 μm or larger and smaller than 10 μm, an average value of ratios (long diameters/short diameters) of the long diameters to the short diameters of the respective particles is smaller than 3, and an average value of ratios (the long diameters/thicknesses) of the long diameters to thicknesses of the respective particles is 3 or larger. An open area ratio of the surface of the collecting layer is 10% or larger. | 09-27-2012 |
20120240539 | HONEYCOMB FILTER AND MANUFACTURING METHOD OF THE SAME - There is provided a honeycomb filter including a honeycomb base material including a porous partition wall parent material; plugged portions arranged in open frontal areas of predetermined cells in an end surface on an inflow side of the fluid, and open frontal areas of the remaining cells in an end surface on an outflow side of the fluid; and a porous collecting layer disposed on the surface of the partition wall parent material in the remaining cells. In a cross section orthogonal to an extending direction of the cells, a shape of the cells is a rectangular shape, and a thickness of a portion of the collecting layer which is positioned in each of corner portions of each of the cells is from one to three times that of a portion of the collecting layer which is positioned in the center of each of sides of the cell. | 09-27-2012 |
20130025245 | WAVED FILTER MEDIA AND ELEMENTS - Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications. | 01-31-2013 |
20130097980 | METHOD OF FORMING FILTER ARRANGEMENTS; AND, APPARATUS - In one aspect a method of forming filter cartridge arrangements for use in air cleaners is provided. The method involves coiling a media pack with a central winding bead and cutting through the winding bead in the coiled media pack to form two media packs. An example filter arrangement is disclosed. In another aspect, a filter cartridge arrangement for use in air cleaners is provided. The filter cartridge arrangement includes a media pack including a plurality of inlet flutes and outlet flutes extending between first and second opposite flow faces and formed from an arrangement of facing sheet secured to corrugated sheet. An example cartridge includes a preform secured to the media pack. | 04-25-2013 |
20130199141 | MULTILAYER FILTER MEDIUM FOR USE IN FILTER, AND FILTER - A multilayer filter medium, which is used as a constituent member of a filter and has a multilayer structure, includes a wet type nonwoven fabric layer A containing 0.5 to 20% by weight, based on layer weight, of short-cut nanofibers which are composed of a fiber-forming thermoplastic polymer, have a single fiber diameter (D) of 100 to 1,000 nm and are cut so that the ratio (L/D) of the length (L) to the single fiber diameter (D) is within the range of 100 to 2,500 and core-sheath conjugate type binder fibers having a single fiber diameter of 5 μm or more, and a nonwoven fabric layer B having a lower density than that of the wet type nonwoven fabric layer A. A filter uses the multilayer filter medium and has the nonwoven fabric layer B arranged on a fluid inlet side. | 08-08-2013 |
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 |
20130312378 | ATMOSPHERIC AIR FILTRATION UNIT, AIR PRE-FILTRATION UNIT, AND ASSOCIATED AIR FILTRATION SYSTEM FOR REMOVEABLE ATTACHMENT THEREOF - An air filtration system including a pre-filtration unit having a filter section and a spacer section attached to the filter section and extending downstream from the filter section, a pre-filter attachment device having a pre-filter securing section and a first plurality of coupling members, and a filtration unit. The filter section includes a pre-filter. The spacer section includes an at least partially open end located on a downstream side of the spacer section to expose a downstream face of the pre-filter. The filtration unit includes a filter frame, an upper section thereof including an upstream-facing surface having a plurality of openings, a filter secured inside the lower section of filter frame, and a second plurality of coupling members located on the filter frame and coupleable with the first plurality of coupling members of the pre-filter attachment device to removeably secure the pre-filtration unit to the filtration unit. | 11-28-2013 |
20130340398 | FIBER WEBS INCLUDING SYNTHETIC FIBERS - Filter media suitable for various applications and related components, systems, and methods associated therewith are described. The filter media may include a fiber web having a mixture comprising non-fibrillated synthetic fibers and fibrillated fibers, such as lyocell. The fiber web may also include multi-component fibers (e.g., bi-component fibers). In some embodiments, glass fibers are not incorporated into the fiber web. | 12-26-2013 |
20140000229 | COMPOSITE MICROPOROUS FILTER MATERIAL | 01-02-2014 |
20140020350 | AIR FILTER MEDIA - The present disclosure relates generally to an air filter media. In one embodiment, the air filter media includes a nonwoven fabric substrate, and a nanofiber layer formed on a surface of the nonwoven fabric substrate. A fiber diameter of the nonwoven fabric substrate is from 100 nm to 400 nm. | 01-23-2014 |
20140033663 | FILTER MEDIA AND FILTER DEVICE COMPRISED THEREOF - This disclosure describes examples of a filter media for use in filter devices, e.g., pulse filter cartridges found in power generating systems. Embodiments of the filter media include a base media and a membrane, which partially covers one or both sides of the base media. In one embodiment, the membrane covers a membrane area of at least one side of the base media, wherein the membrane area is less than a total area of the side on which the membrane is disposed. | 02-06-2014 |
20140033664 | FILTER ARRANGEMENT AND METHODS - A filter element includes a single seamless media pack having first and second opposite ends and first and second lateral sides extending between the first and second ends. The media pack also has pleats extending between the first and second ends and a first cross-section defined between the first and second lateral sides. The first cross-section having at least one outward projection that defines an internal radius of at least ¼ inch wherein a plurality of pleats of the media pack are fanned around the internal radius. A first end cap is secured to the first end of the media pack while a second end cap secured to the second end of the media pack. Additionally, a frame member is secured to the first end cap, second end cap, the first lateral side, and the second lateral side. A pre-filter is usable with described filter arrangements. | 02-06-2014 |
20140033665 | MULTIPLE LAYER HEPA FILTER AND METHOD OF MANUFACTURE - A multiple layer HEPA filter media includes, in an exemplary embodiment, a first layer that includes a nonwoven synthetic fabric formed from a plurality of bicomponent synthetic fibers with a spunbond process, and having a bond area pattern of a plurality of substantially parallel discontinuous lines of bond area. The filter media also includes a second layer laminated onto the first layer. The second layer is formed from a micro-porous membrane. Further, the filter media includes a third layer laminated onto the second layer, with the third layer including a synthetic nonwoven fabric formed from a plurality of synthetic fibers. The synthetic fibers include at least two different synthetic fibers having different melting points. The third layer has a cover factor of less than seven millimeters. In addition, the multiple layer filter media further includes a plurality of corrugations. | 02-06-2014 |
20140047807 | FILTER FOR A FLUID-CONDUCTING PIPE - A filter for a fluid-conducting pipe, in particular for a gas-conducting pipe of an internal combustion engine. The filter includes a self-supporting areal filter element and is fixable along a circumference | 02-20-2014 |
20140069067 | Method of Installing a Multi-Layer Batt, Blanket or Mat in an Exhaust Gas Aftertreatment or Acoustic Device - An exhaust treatment unit including a longitudinal core around an axis, a support mat, and powdered insulation impregnated between first and second layers of the support mat. In assembly, the mat is first wrapped around the core once, and powdered insulation is applied to the surface of the unwrapped portion of the mat prior to further winding whereby powdered insulation is disposed between mat layers after further winding. | 03-13-2014 |
20140069068 | FILTER CARTRIDGE - A filter cartridge includes a filter medium configured as an elongated bellows having a first and a second longitudinal end. The bellows are connected at the first longitudinal end to a base and at the second longitudinal end to a top. The bellows enclose a central passage. The bellows are configured in a shape of a prism. | 03-13-2014 |
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 |
20140144113 | FILTER MEDIA WITH A MULTI-LAYER STRUCTURE - Filter media are described. The filter media may include multiple layers. In some embodiments, the filter media include a nanofiber layer adhered to another layer. In some embodiments, the layer to which the nanofiber layer is adhered is formed of multiple fiber types (e.g., fibers that give rise to structures having different air permeabilities and/or pressure drops). In some embodiments, the nanofiber layer is adhered to a single-phase or a multi-phase layer. In some embodiments, the nanofiber layer is manufactured from a meltblown process. The filter media may be designed to have advantageous properties including, in some cases, a high dust particle capture efficiency and/or a high dust holding capacity. | 05-29-2014 |
20140165517 | FILTER MEDIUM FOR AIR FILTER, AIR FILTER UNIT, AND METHOD FOR PRODUCING FILTER MEDIUM FOR AIR FILTER - A filter medium for an air filter unit for collecting dust from an airflow includes a pre-collection layer, a principal collection layer and an air-permeable cover layer. The pre-collection layer collects a part of the dust in the air flow. The principal collection layer includes a porous polytetrafluoroethylene film. The principal collection layer is positioned on a downstream side of the air flow relative to the pre-collection layer to collect dust that passes through the pre-collection layer. The air-permeable cover layer is positioned as an outermost surface layer of the filter medium on an upstream side of the air flow to allow dust in the air flow to pass through. The air-permeable cover layer is configured to suppress deformation of a surface of the filter medium caused by pressing force from an outside. Preferably, an air filter unit includes the filter medium in a zigzag shape. | 06-19-2014 |
20140190137 | Media and Filter for Coastal and High Humidity Areas - A filter media for use in coastal and other high humidity areas is provided. The media includes a first composite material layer having a melt-blown material layer, and a second composite material layer having a polyester layer and an electrospun nano fiber layer laminated to the polyester layer. | 07-10-2014 |
20140196420 | FINE FIBER MEDIA LAYER - Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials. | 07-17-2014 |
20140360146 | WET-LAID DUAL-LAYER AIR FILTRATION MEDIA INCLUDING A LARGE DIAMETER SYNTHETIC POLYMERIC FIBER IN A TOP LAYER THEREOF - A wet-laid dual-layer air filtration media having a thin, lightweight top layer and a bottom layer is provided. The novel media includes a large diameter synthetic polymeric fiber in the top layer that deforms plastically and retains cohesion as a single object, while minimizing use of frangible components that become airborne upon handling. The novel media provides improved high dust holding capacity, while typically maintaining an overall lower basis weight than heretofore available media. | 12-11-2014 |
20150013285 | FILTER MATERIAL - A filter material for an air filter may include a substrate layer on an inflow side and a fine-fibre layer on an outflow side relative to a flow direction. The filter material may include a connection region arranged between the substrate layer and the fine-fibre layer. The substrate layer, connection region and fine-fibre layer may include pores having an aggregate degressive pore size with respect to the flow direction. A combined thickness of the substrate layer, connection region and fine-fibre layer may be at least 0.35 mm. The substrate layer may include a cellulose material and have an impregnation of resin disposed along the inflow side. The resin may amount to approximately 22% by mass of the substrate layer. | 01-15-2015 |
20150013286 | HONEYCOMB FILTER AND PRODUCTION METHOD FOR HONEYCOMB FILTER - A honeycomb filter includes a ceramic honeycomb substrate and an auxiliary filter layer. The ceramic honeycomb substrate includes a porous honeycomb fired body having cell walls provided along a longitudinal direction of the porous honeycomb fired body to define cells through which fluid is to pass and which have a fluid inlet end and a fluid outlet end opposite to the fluid inlet end along the longitudinal direction. The cells include first cells including an inlet opening end at the fluid inlet end and an outlet closed end at the fluid outlet end. The auxiliary filter layer is provided on a surface of first cell walls of the first cells and on a pore portion in the first cell walls, and includes a first layer and a second layer. In the first layer, particles having a first average particle diameter are deposited on the surface of the first cell walls. | 01-15-2015 |
20150052864 | Prefilter Wrap - A removable prefilter wrap having multiple layers is disclosed. The prefilter wrap may be configured to be placed around the outer circumference of a filter canister. The prefilter wrap has multiple layers for filtering water, oil(s), and/or other contaminants from an airflow. | 02-26-2015 |
20150059303 | Filter Element and Filter System - The invention relates to a filter element ( | 03-05-2015 |
20150068174 | FILTER ELEMENTS; AIR CLEANER; ASSEMBLY; AND, METHODS - A filter cartridge, a safety element and fluid cleaner assembly are described. The fluid cleaner assembly generally includes a housing having a cover and a primary fluid cleaner section. The filter cartridge generally comprises z-filter media, arranged in a straight through configuration. Preferred cartridges include a seal gasket positioned to extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Preferred features are described. Methods of assembly and use are also provided. | 03-12-2015 |
20150298036 | APPARATUS AND METHOD USING AN ELECTRIC FIELD FOR CREATING UNIFORM NANOFIBER PATTERNS ON NONCONDUCTIVE MATERIALS TO ENHANCE FILTRATION AND FOR EMBEDMENT OF FIBERS INTO MATERIALS FOR OTHER APPLICATIONS - A filtration device including a base filtration material having openings for fluid flow there through and a filtration medium. The filtration medium includes a plurality of patterned nanofibers formed on the base filtration material. The filtration medium has a figure of merit greater than 30 kPa | 10-22-2015 |
20150369496 | FILTER ELEMENT AND FILTER ASSEMBLY HAVING TWO FILTRATION ZONES - A filter element may include filter media having an elongated hollow passage extending along a longitudinal axis and between a first end and a second end, with the filter media having an exterior surface. The filter element may also include first and second fins associated with and extending radially from the exterior surface of the filter media. The filter media may include a first filtration zone extending partially around the hollow passage and between the first fin and the second fin, with the first filtration zone being associated with a first portion of the filter media. The filter media may also include a second filtration zone extending partially around the hollow passage and between the first fin and the second fin, with the second filtration zone being associated with a second portion of the filter media. | 12-24-2015 |
20150375150 | FILTER MEDIA INCLUDING ORIENTED FIBERS - Filter media incorporating one or more filtration layers that include fibers including fiber portions orientated at a non-zero angle with respect to a surface of the filtration layer are provided. In some embodiments, at least a part of the fiber portions are positioned at an angle of at least 20 degrees (e.g., between 46 degrees and 90 degrees, or between 61 degrees and 90 degrees) with respect to a surface of the filtration layer or an outer or cover layer of the media. This orientation of fiber portions may result in an increased efficiency (e.g., average efficiency and/or initial efficiency) compared to similar filter media that do not include such oriented fiber portions. | 12-31-2015 |
20160030872 | AIR FILTER - An air filter has a housing, a filter core, a resilient abutting element, a sleeve, a threaded rod bracket, a threaded rod and a nut. The axial sealing is achieved by axially compressing the resilient abutting element, such that the user does not have to apply much physical effort to compress the resilient abutting element. The user can easily push the filter core into the housing, and then rotates and tightens the nut, which can axially compress the resilient abutting element. It is easy to apply force on rotating the nut, and better still, the nut can be rotated by an electric tool, which further facilitates the convenience in assembling. Besides, the nut only abuts the sleeve, and the threaded rod bracket does not abut the filter core. Consequently, the filter core is not blocked, thereby making the air smoothly pass through the filter core. | 02-04-2016 |
20160030874 | AIR FILTER ASSEMBLY - An improved air filter assembly for removing particles from air flow across the filter assembly utilizing a tackifier material. The air filter assembly comprises a peripheral frame adapted to be supported in communication with an intake opening in a residential return air duct; and a filter media mounted within the frame for removing particulate from air flowing from an upstream side of the filter assembly to a downstream side of the air filter assembly. The downstream side of the filter media comprises a layer of filter media treated with a tackifier material or a sticky oil. | 02-04-2016 |
20160051918 | Filter Medium, Particularly an Air Filter Medium and Filter Element, Particularly an Air Filter Element, Having a Filter Medium - A filter medium is provided with a first filter layer and a second filter layer that is arranged downstream of the first filter layer in a flow-through direction of the filter medium and has nanofibers. The first filter layer has a first filter layer section and a second filter layer section, wherein the second filter layer section is arranged downstream of the first filter layer section in the flow-through direction of the filter medium. The first filter layer section has a first packing density of fibers and the second filter layer section has a second packing density of fibers deviating from the first packing density of fibers. | 02-25-2016 |
20160082376 | FILTER MATERIAL COMPRISING AN EXPANDED POLYTETRAFLUOROETHYLENE CONTAINING LAYER AND A NATURAL FIBER CONTAINING LAYER - A fluid filter material configured to have a desirable efficiency at a low pressure drop is presently disclosed. The fluid filter material has a relatively open pleatable scrim comprised of a wet-laid or dry-laid material with natural and synthetic fibers. A layer of expanded polytetrafluoroethylene filaments have a first surface bonded with the pleatable scrim and the fluid filter material is pleatable and self-supporting. The natural fibers in the scrim may comprise cellulosic fibers, cotton, rayon, or other natural fibrous materials. The scrim may also comprise synthetic fibers. | 03-24-2016 |
20160090946 | AIR FILTER ELEMENT ASSEMBLY FOR A MOTOR VEHICLE - A filter element assembly includes a filter body and an auxiliary filter. The filter body includes a sidewall around a hollow core. Further the filter body and auxiliary filter are both received and held on a support including a base and a cage. | 03-31-2016 |
20160136553 | RESIN IMPREGNATED FIBER WEBS - The present disclosure relates to filter media having one or more pre-filter layers disposed upstream a main filtration layer. The main filtration layer may include synthetic polymer fibers (e.g., continuous meltblown fibers). A coating (e.g., binder resin) may be suitably applied to at least a portion of the main filtration layer (e.g., saturated, impregnated) and/or other layers of the filter media (e.g., pre-filter layer(s), scrim, etc.), or portions thereof. In some embodiments, the coating has a cure temperature that is comparatively less than a shrinkage temperature of the synthetic polymer fibers of the filtration layer(s). In some embodiments, the coating may coat a 5 cm×5 cm area, or a majority area, of the outer surface of the second layer. In some embodiments, the second layer has a pressure drop of less than about 80 kPa, a mean flow pore size of between about 0.05 micron and about 30 microns with the standard deviation of the mean flow pore size of the second layer being less than about 10 microns. | 05-19-2016 |
20160166953 | FILTER MEDIA INCLUDING FINE STAPLE FIBERS | 06-16-2016 |
20160184751 | FILTER MEDIA WITH A MULTI-LAYER STRUCTURE - Filter media are described. The filter media may include multiple layers. In some embodiments, the filter media include a nanofiber layer adhered to another layer. In some embodiments, the layer to which the nanofiber layer is adhered is formed of multiple fiber types (e.g., fibers that give rise to structures having different air permeabilities and/or pressure drops). In some embodiments, the nanofiber layer is adhered to a single-phase or a multi-phase layer. In some embodiments, the nanofiber layer is manufactured from a meltblown process. The filter media may be designed to have advantageous properties including, in some cases, a high dust particle capture efficiency and/or a high dust holding capacity. | 06-30-2016 |
20160193555 | MULTI-LAYERED NANOFIBER MEDIUM USING ELECTRO-BLOWING, MELT-BLOWING OR ELECTROSPINNING, AND METHOD FOR MANUFACTURING SAME | 07-07-2016 |
20160199767 | FILTER MATERIAL, FILTER ELEMENT, AND METHOD AND DEVICE FOR PRODUCING A FILTER MATERIAL | 07-14-2016 |
20160250575 | Filter Comprising Nanofiber Between Substrates And Method For Manufacturing The Same | 09-01-2016 |