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公开(公告)号：US11890561B2
公开(公告)日：2024-02-06
申请号：US17884819
申请日：2022-08-10
发明人： Farzad Rezaei , Abdoulaye Doucouré
CPC分类号： B01D39/163 , B01D61/145 , B01D61/147 , B01D2239/065 , B01D2239/1216 , B01D2239/1233 , B01D2239/1291
摘要： Filter media having a relatively small pore size and related components, systems, and methods associated therewith are provided. The filter media may include a fibrous efficiency layer, a fibrous support layer, and a third layer adjacent to the efficiency layer. The efficiency layer may impart a relatively homogeneous pore structure to the filter media without adding substantial bulk to the filter media. The support layer may promote the homogeneity of the pore structure. For example, the support layer may prevent and/or minimize defects in the relatively thin efficiency layer that may result from manufacturing and/or processing. The third layer may serve to impart beneficial filtration (e.g., efficiency, dust holding capacity) and/or non-filtration (e.g., layer protection) properties to the filter media without adversely affecting one or more properties of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve liquid filtration, amongst other applications.
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公开(公告)号：US20230045984A1
公开(公告)日：2023-02-16
申请号：US17884819
申请日：2022-08-10
发明人： Farzad Rezaei , Abdoulaye Doucouré
摘要： Filter media having a relatively small pore size and related components, systems, and methods associated therewith are provided. The filter media may include a fibrous efficiency layer, a fibrous support layer, and a third layer adjacent to the efficiency layer. The efficiency layer may impart a relatively homogeneous pore structure to the filter media without adding substantial bulk to the filter media. The support layer may promote the homogeneity of the pore structure. For example, the support layer may prevent and/or minimize defects in the relatively thin efficiency layer that may result from manufacturing and/or processing. The third layer may serve to impart beneficial filtration (e.g., efficiency, dust holding capacity) and/or non-filtration (e.g., layer protection) properties to the filter media without adversely affecting one or more properties of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve liquid filtration, amongst other applications.
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公开(公告)号：US20230025717A1
公开(公告)日：2023-01-26
申请号：US17873960
申请日：2022-07-26
发明人： Bruce Smith , Maxim Silin , David T. Healey
IPC分类号： B01D39/16
摘要： Articles and methods relating to filter media are generally provided. In some embodiments, a filter media has an irregular surface structure. For instance, the filter media may comprise a plurality of peaks that are irregular in one or more ways. A ratio of a peak height standard deviation to an average peak height may be greater than or equal to 0.05, and/or a ratio of a peak spacing standard deviation to an average peak spacing may be greater than or equal to 0.08. In some embodiments, a filter media comprises a non-woven fiber web having a layer thickness of greater than 0.3 mm and/or a stiffness of less than or equal to 100 mg.
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公开(公告)号：US20220355236A1
公开(公告)日：2022-11-10
申请号：US17752286
申请日：2022-05-24
发明人： Jens-Peter Boesner
摘要： Filter media, filter elements, and methods for filtering an gas stream are described herein. In some embodiments, the filter media may comprise a fiber web comprising a plurality of fibers and having a particular oil repellency level. For instance, in certain embodiments, the surface chemistry of the fiber web may be tailored to impart a particular surface energy density that matches the surface energy density of the fluid (e.g., an oil, a lubricant, and/or a cooling agent) being removed from the gas stream. In some embodiments, the fiber web may be wrapped around a core. For example, the fiber web may be wrapped around the core such that it forms two or more layers around the core. In some cases, the fiber web may be perforated. In certain embodiments, an gas stream comprising a fluid (e.g., an oil, a lubricant, and/or a cooling agent) may be passed through the fiber web, filter media, and/or filter element such that at least a portion of the fluid coalesces on the fiber web. Fiber webs, filter media, and/or filter elements as described herein may be particularly well-suited for applications that involve filtering gas streams containing oil, lubricants, and/or cooling agents (e.g., gas streams generated by a compressor) though the media may also be used in other applications. Advantageously, the fiber webs, filter media, and/or filter elements described herein may significantly reduce or prevent fouling of the filter caused by oil or other liquids.
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公开(公告)号：US11452959B2
公开(公告)日：2022-09-27
申请号：US16206566
申请日：2018-11-30
发明人： Farzad Rezaei , Abdoulaye Doucouré
摘要： Filter media having a relatively small pore size and related components, systems, and methods associated therewith are provided. The filter media may include a fibrous efficiency layer, a fibrous support layer, and a third layer adjacent to the efficiency layer. The efficiency layer may impart a relatively homogeneous pore structure to the filter media without adding substantial bulk to the filter media. The support layer may promote the homogeneity of the pore structure. For example, the support layer may prevent and/or minimize defects in the relatively thin efficiency layer that may result from manufacturing and/or processing. The third layer may serve to impart beneficial filtration (e.g., efficiency, dust holding capacity) and/or non-filtration (e.g., layer protection) properties to the filter media without adversely affecting one or more properties of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve liquid filtration, amongst other applications.
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公开(公告)号：US20220193589A1
公开(公告)日：2022-06-23
申请号：US17127830
申请日：2020-12-18
摘要： Filter media comprising non-woven fiber webs having one or more advantageous physical properties are generally described. In some embodiments, a filter media and/or non-woven fiber web described herein comprises a combination of fibers that results in enhanced physical properties. For example, the non-woven fiber web may comprise a combination of fiber types that is advantageous, such as a combination comprising fibrillated fibers, glass fibers, and/or binder fibers. In some cases, the filter media and/or non-woven fiber web comprising the combination of fibers may be formed into undulations (e.g., by a creping and/or microcreping process) to further enhance the physical properties of the filter media and/or non-woven fiber.
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公开(公告)号：US20220161171A1
公开(公告)日：2022-05-26
申请号：US17534186
申请日：2021-11-23
IPC分类号： B01D39/20
摘要： Filter media comprising fluorinated water-repellent additives and/or water-repellent additives having minimal or no fluorine atoms are generally provided. Filter media disclosed herein may include fluorinated water-repellent additives but not water-repellent additives having minimal or no fluorine atoms, water-repellent additives having minimal or no fluorine atoms but not fluorinated water-repellent additives, or both fluorinated water-repellent additives and water-repellent additives having minimal or no fluorine atoms.
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公开(公告)号：US20220126226A1
公开(公告)日：2022-04-28
申请号：US17517708
申请日：2021-11-03
IPC分类号： B01D39/16
摘要： Filter media, such as electret-containing filtration media for filtering gas streams (e.g., air), are described herein. In some embodiments, the filter media may be designed to have desirable properties such as stable filtration efficiency over the lifetime of the filter media, increased normalized gamma, relatively low pressure drop (i.e. resistance), and/or relatively low basis weight. In certain embodiments, the filter media may be a composite of two or more types of fiber layers where each layer may be designed to enhance its function without substantially negatively impacting the performance of another layer of the media. For example, one layer of the media may be designed to have a relatively low basis weight and/or a relatively high air permeability, and another layer of the media may be designed to have stable filtration efficiency and/or a relatively high efficiency throughout the filter media's lifetime. The filter media described herein may be particularly well-suited for applications that involve filtering gas streams (e.g., face masks, cabin air filtration, vacuum filtration, room filtration, furnace filtration, respirator equipment, residential or industrial HVAC filtration, high-efficiency particulate arrestance (HEPA) filters, ultra-low particular air (ULPA) filters, medical equipment), though the media may also be used in other applications.
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公开(公告)号：US11289771B2
公开(公告)日：2022-03-29
申请号：US16161380
申请日：2018-10-16
发明人： John A. Wertz , Nicolas Clement , Sachin Kumar , Akshay Ashirgade
IPC分类号： H01M50/443 , H01M50/446 , H01M10/06 , H01M4/14 , H01M4/20 , H01M50/44 , H01M50/411 , H01M50/431
摘要： Battery components are generally provided. In some embodiments, the battery components can be used as pasting paper and/or capacitance layers for batteries, such as lead acid batteries. The battery components described herein may comprise a plurality of fibers. The battery component may include, in some embodiments, a plurality of fibers and, optionally, one or more additives such as conductive carbon and/or activated carbon. In certain embodiments, the plurality of fibers include relatively coarse glass fibers (e.g., having an average diameter of greater than or equal to 2 microns), relatively fine glass fibers (e.g., having an average diameter of less than 2 microns), and/or fibrillated fibers. In some instances, such fibers may be present in amounts such that the battery component has a particular surface area, mean pore size, and/or dry tensile strength.
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公开(公告)号：US20210387120A1
公开(公告)日：2021-12-16
申请号：US16899884
申请日：2020-06-12
发明人： Thomas Petri , Sudhakar Jaganathan
摘要： Filter media comprising fibrillated fibers and glass fibers are generally described.
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