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1. 发明申请

WO2018156561A1 ELECTRET-CONTAINING FILTER MEDIA 审中-公开
公开(公告)号：WO2018156561A1
公开(公告)日：2018-08-30
申请号：PCT/US2018/018924
申请日：2018-02-21
申请人： HOLLINGSWORTH & VOSE COMPANY
发明人： JINKA, Sudheer
IPC分类号： B01D46/00 , 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.

2. 发明申请

WO2022133220A1 UNDULATED FILTER MEDIA 审中-公开
公开(公告)号：WO2022133220A1
公开(公告)日：2022-06-23
申请号：PCT/US2021/064045
申请日：2021-12-17
申请人： HOLLINGSWORTH & VOSE COMPANY
发明人： JINKA, Sudheer , YEGYA RAMAN, Praveen, Kumar , YU, Howard , CHENG, Xinquan , JAGANATHAN, Sudhakar
IPC分类号： B01D39/16
摘要： Filter media comprising non-woven fiber webs and having one or more advantageous structural properties are generally described. In some embodiments, a filter media and/or non-woven fiber web described herein has one or more properties that are both beneficial and easily obtainable by undulating the non-woven fiber web, such as by performing a creping procedure. This property may be characteristic of the procedure employed to form the undulations (e.g., creping and/or microcreping), or may be attainable via one or more methods of undulation.

3. 发明申请

WO2021226049A8 FILTER MEDIA WITH IRREGULAR STRUCTURE AND/OR REVERSIBLY STRETCHABLE LAYERS 审中-公开
公开(公告)号：WO2021226049A8
公开(公告)日：2021-11-11
申请号：PCT/US2021/030609
申请日：2021-05-04
申请人： HOLLINGSWORTH & VOSE COMPANY
发明人： SMITH, Bruce , HASSAN, Mohammad A. , SILIN, Maxim , JINKA, Sudheer , FARELL, Greg Wagner , HEALEY, David T.
IPC分类号： B01D39/08 , B01D39/16 , B01D46/52 , B32B1/00 , B32B5/02 , B32B7/035 , B32B38/00 , B01D2239/0233 , B01D2239/025 , B01D2239/0464 , B01D2239/0492 , B01D2239/0622 , B01D2239/0627 , B01D2239/0631 , B01D2239/0654 , B01D2239/0681 , B01D2239/083 , B01D2239/1225 , B01D2239/1233 , B01D2239/1258 , B01D2239/1291 , B01D39/083 , B01D39/1692 , B32B2250/20 , B32B2255/02 , B32B2255/26 , B32B2260/021 , B32B2262/0215 , B32B2262/0246 , B32B2262/0253 , B32B2262/0261 , B32B2262/0276 , B32B2262/0284 , B32B2262/0292 , B32B2262/124 , B32B2307/51 , B32B2307/718 , B32B2307/724 , B32B2307/732 , B32B3/28 , B32B5/022 , B32B5/267 , B32B5/268 , B32B5/269 , B32B5/271 , B32B7/12
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.

4. 发明申请

WO2021226049A1 FILTER MEDIA WITH IRREGULAR STRUCTURE AND/OR REVERSIBLY STRETCHABLE LAYERS 审中-公开
公开(公告)号：WO2021226049A1
公开(公告)日：2021-11-11
申请号：PCT/US2021/030609
申请日：2021-05-04
申请人： HOLLINGSWORTH & VOSE COMPANY
发明人： SMITH, Bruce , HASSAN, Mohammad A. , SILIN, Maxim , JINKA, Sudheer , FARELL, Greg Wagner , HEALEY, David T.
IPC分类号： B01D39/08 , B01D39/16 , B01D46/52 , B32B1/00 , B32B5/02 , B32B7/035 , B32B38/00
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.

5. 发明申请

WO2022133238A1 FILTER MEDIA COMPRISING FIBRILLATED FIBERS AND GLASS FIBERS 审中-公开
公开(公告)号：WO2022133238A1
公开(公告)日：2022-06-23
申请号：PCT/US2021/064071
申请日：2021-12-17
申请人： HOLLINGSWORTH & VOSE COMPANY
发明人： CHENG, Xinquan , JAGANATHAN, Sudhakar , JINKA, Sudheer , YEGYA RAMAN, Praveen, Kumar
IPC分类号： B01D39/16
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.

6. 发明申请

WO2018017937A1 MULTI-LAYERED ELECTRET-CONTAINING FILTRATION MEDIA 审中-公开
标题翻译：多层含电子过滤介质
公开(公告)号：WO2018017937A1
公开(公告)日：2018-01-25
申请号：PCT/US2017/043249
申请日：2017-07-21
申请人： HOLLINGSWORTH & VOSE COMPANY
发明人： JINKA, Sudheer , HEALEY, David, T. , GALLIMORE, Mark, A.
IPC分类号： B01D39/16
摘要： Filter 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, high oil repellency, low instantaneous resistance, and/or stable service life. In certain embodiments, one or more layers of the media may have a certain value of basis weight over air permeability (and/or a ratio of a value of basis weight over air permeability between two layers). The filter media may optionally comprise a support layer with a relatively high air permeability (e.g., greater than or equal to 1100 CFM). In some cases, the filter media may have a relatively low initial resistance and/or may have a particular final El efficiency. 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, respirator equipment, as well as residential heating ventilation and air conditioning (HVAC) and industrial HVAC systems), though the media may also be used in other applications.
摘要翻译：这里描述用于过滤气流（例如，空气）的过滤介质。在一些实施例中，过滤介质可被设计成具有期望的性质，诸如稳定的过滤效率，高的拒油性，低的瞬时阻力和/或稳定的使用寿命。在某些实施方案中，介质的一个或多个层可以具有相对于透气性（和/或基重相对于两层之间的透气性的值的比率）的特定基重值。过滤介质可以可选地包括具有相对高透气性（例如，大于或等于1100CFM）的支撑层。在一些情况下，过滤介质可以具有相对较低的初始阻力和/或可以具有特定的最终E1效率。本文所述的过滤介质可特别适用于涉及过滤气流（例如，面罩，机舱空气过滤，真空过滤，呼吸器设备，以及住宅加热通风和空调（HVAC）和工业HVAC系统），但媒体也可能用于其他应用程序。

7. 发明公开

EP3487602A1 MULTI-LAYERED ELECTRET-CONTAINING FILTRATION MEDIA 审中-公开
公开(公告)号：EP3487602A1
公开(公告)日：2019-05-29
申请号：EP17831940.6
申请日：2017-07-21
申请人： Hollingsworth & Vose Company
发明人： JINKA, Sudheer , HEALEY, David, T. , GALLIMORE, Mark, A.
IPC分类号： B01D39/16

8. 发明公开

EP4263020A1 FILTER MEDIA COMPRISING FIBRILLATED FIBERS AND GLASS FIBERS 审中-公开
公开(公告)号：EP4263020A1
公开(公告)日：2023-10-25
申请号：EP21907910.0
申请日：2021-12-17
申请人： Hollingsworth & Vose Company
发明人： CHENG, Xinquan , JAGANATHAN, Sudhakar , JINKA, Sudheer , YEGYA RAMAN, Praveen, Kumar
IPC分类号： B01D39/16

9. 发明公开

EP4146369A1 FILTER MEDIA WITH IRREGULAR STRUCTURE AND/OR REVERSIBLY STRETCHABLE LAYERS 审中-实审
公开(公告)号：EP4146369A1
公开(公告)日：2023-03-15
申请号：EP21799567.9
申请日：2021-05-04
申请人： Hollingsworth & Vose Company
发明人： SMITH, Bruce , HASSAN, Mohammad A. , SILIN, Maxim , JINKA, Sudheer , FARELL, Greg Wagner , HEALEY, David T.
IPC分类号： B01D39/08 , B01D39/16 , B01D46/52 , B32B1/00 , B32B5/02 , B32B7/035 , B32B38/00

10. 发明公开

EP3585499A1 ELECTRET-CONTAINING FILTER MEDIA 审中-公开
公开(公告)号：EP3585499A1
公开(公告)日：2020-01-01
申请号：EP18757748.1
申请日：2018-02-21
申请人： Hollingsworth & Vose Company
发明人： JINKA, Sudheer , SMITH, Bruce , COLLINGWOOD, Jeremy Andrew , GALLIMORE, Mark , GULREZ, Syed
IPC分类号： B01D46/00 , B01D39/16

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