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公开(公告)号：US20210101100A1
公开(公告)日：2021-04-08
申请号：US17076231
申请日：2020-10-21
发明人： Maxim Silin , Sudhakar Jaganathan
摘要： Filter media having a gradient in a property and methods associated with such media are provided. In some embodiments, a filter media may have a gradient in mean pore size. The gradient in mean pore size may be across at least a portion of the thickness of the filter media. In some embodiments, the gradient can be represented by an exponential function. The exponential gradient in mean pore size may impart desirable properties to the filter media including enhanced filtration properties (e.g., relatively high dust holding capacity and efficiency), amongst other benefits. The filter media may be particularly well-suited for applications that involve filtering liquids (e.g., hydraulics, fuel, lube, water), though the media may also be used in other applications.
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公开(公告)号：US10898838B2
公开(公告)日：2021-01-26
申请号：US15380996
申请日：2016-12-15
摘要： Articles and methods involving filter media are generally provided. In certain embodiments, the filter media includes at least a first layer, a second layer, and an adhesive resin positioned between the first layer and the second layer. In some embodiments, the first layer may be a pre-filter layer or a support layer. The second layer may, for example, comprise fibers formed by a solution spinning process and/or may comprise fine fibers. In some embodiments, the adhesive resin may be present in a relatively low amount and/or may have a low glass transition temperature. The filter media as a whole may have one or more advantageous properties, including one or more of a high stiffness, a high bond strength between the first layer and the second layer, a high gamma, and/or a low increase in air resistance after being subjected to an IPA vapor discharge. The filter media may be, for example, a HEPA filter and/or an ULPA filter.
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公开(公告)号：US20160175752A1
公开(公告)日：2016-06-23
申请号：US14577247
申请日：2014-12-19
CPC分类号： B01D46/0023 , A41D13/11 , A62B23/02 , A62B23/025 , B01D39/1623 , B01D39/1692 , B01D46/521 , B01D46/543 , B01D2239/0622 , B01D2239/0631 , B01D2239/065 , B01D2239/1233 , B01D2275/10
摘要： Filter media comprising a pre-filter layer and related components, systems, and methods associated therewith are provided. In some embodiments, the pre-filter layer may be designed to impart desirable properties to the filter media, such as a high gamma and/or long service life, while having relatively minimal or no adverse effects on another property of the filter media that is important for a given application. For instance, a pre-filter layer may be used to improve the upstream removal of fine particulate matter, which may clog a downstream efficiency layer comprising submicron fibers and reduce filtration performance. The pre-filter layer may be configured to increase service life and/or increase the gamma of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
摘要翻译： 提供了包括预过滤层和与之相关的相关组件，系统和方法的过滤介质。 在一些实施例中，预过滤器层可以被设计成赋予过滤介质所需的性质，例如高γ和/或长的使用寿命，同时对过滤介质的另一性能具有相对最小或没有不利影响， 对于给定的应用程序很重要 例如，可以使用预过滤层来改善细颗粒物质的上游去除，这可能堵塞包含亚微米纤维的下游效率层并降低过滤性能。 预过滤层可以被配置为增加使用寿命和/或增加过滤介质的γ。 如本文所述，过滤介质可能特别适用于涉及过滤空气的应用，尽管介质也可用于其它应用。
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公开(公告)号：US20240042367A1
公开(公告)日：2024-02-08
申请号：US18316721
申请日：2023-05-12
CPC分类号： B01D46/62 , B01D39/1623 , B01D39/1692 , A41D13/11 , B01D46/521 , B01D46/543 , B01D2275/10 , A62B23/02
摘要： Filter media comprising a pre-filter layer and related components, systems, and methods associated therewith are provided. In some embodiments, the pre-filter layer may be designed to impart desirable properties to the filter media, such as a high gamma and/or long service life, while having relatively minimal or no adverse effects on another property of the filter media that is important for a given application. For instance, a pre-filter layer may be used to improve the upstream removal of fine particulate matter, which may clog a downstream efficiency layer comprising submicron fibers and reduce filtration performance. The pre-filter layer may be configured to increase service life and/or increase the gamma of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in 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：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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公开(公告)号：US11123668B2
公开(公告)日：2021-09-21
申请号：US16281428
申请日：2019-02-21
发明人： Nagendra Anantharamaiah , Sudhakar Jaganathan , Gerald Gadbois , Maxim Silin , Mark A. Gallimore
IPC分类号： B01D39/16
摘要： Filter media comprising a filtration layer comprising synthetic fibers (e.g., pleatable backer layer) and related components, systems, and methods associated herewith are provided. In some embodiments, the filtration layer comprising synthetic fibers may be a non-woven web comprising a blend of coarse and fine diameter fibers. The filtration layer comprising synthetic fibers may be designed to have desirable performance properties without compromising certain mechanical properties, such as the pleatability of the media. In some embodiments, a filter media, described herein, may comprise the filtration layer comprising synthetic fibers and an efficiency layer. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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公开(公告)号：US20200206666A1
公开(公告)日：2020-07-02
申请号：US16729648
申请日：2019-12-30
摘要： Articles and methods involving filter media are generally provided. In certain embodiments, the filter media includes at least a first layer, a second layer, and an adhesive resin positioned between the first layer and the second layer. In some embodiments, the first layer may be a pre-filter layer or a support layer. The second layer may, for example, comprise fibers formed by a solution spinning process and/or may comprise fine fibers. In some embodiments, the adhesive resin may be present in a relatively low amount and/or may have a low glass transition temperature. The filter media as a whole may have one or more advantageous properties, including one or more of a high stiffness, a high bond strength between the first layer and the second layer, a high gamma, and/or a low increase in air resistance after being subjected to an IPA vapor discharge. The filter media may be, for example, a HEPA filter and/or an ULPA filter.
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公开(公告)号：US10343095B2
公开(公告)日：2019-07-09
申请号：US14577247
申请日：2014-12-19
摘要： Filter media comprising a pre-filter layer and related components, systems, and methods associated therewith are provided. In some embodiments, the pre-filter layer may be designed to impart desirable properties to the filter media, such as a high gamma and/or long service life, while having relatively minimal or no adverse effects on another property of the filter media that is important for a given application. For instance, a pre-filter layer may be used to improve the upstream removal of fine particulate matter, which may clog a downstream efficiency layer comprising submicron fibers and reduce filtration performance. The pre-filter layer may be configured to increase service life and/or increase the gamma of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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公开(公告)号：US20170232371A1
公开(公告)日：2017-08-17
申请号：US15045538
申请日：2016-02-17
发明人： Nagendra Anantharamaiah , Sudhakar Jaganathan , Gerald Gadbois , Maxim Silin , Mark A. Gallimore
IPC分类号： B01D39/16
CPC分类号： B01D39/1623 , B01D2239/065 , B01D2239/1233 , B01D2239/1291
摘要： Filter media comprising a filtration layer comprising synthetic fibers (e.g., pleatable backer layer) and related components, systems, and methods associated herewith are provided. In some embodiments, the filtration layer comprising synthetic fibers may be a non-woven web comprising a blend of coarse and fine diameter fibers. The filtration layer comprising synthetic fibers may be designed to have desirable performance properties without compromising certain mechanical properties, such as the pleatability of the media. In some embodiments, a filter media, described herein, may comprise the filtration layer comprising synthetic fibers and an efficiency layer. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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