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公开(公告)号：US10537836B2
公开(公告)日：2020-01-21
申请号：US16084127
申请日：2017-03-08
摘要： A filter medium for an air filter includes a pre-collection member, a first porous film, and a second porous film arranged in order from the side that is upstream of the air current. Each of the first porous film and the second porous film has a pressure loss of 30 Pa or more and 90 Pa or less when air is passed through each porous film at a flow rate of 5.3 cm/s, and has a collection efficiency of 95% or more and 99.9% or less for NaCl particles having a particle diameter of 0.3 μm when air containing the NaCl particles is passed through each of the porous films at a flow rate of 5.3 cm/s. The pre-collection member has a pressure loss of 5 Pa or more and less than 55 Pa when air is passed through the pre-collection member at a flow rate of 5.3 cm/s, has a collection efficiency of 15% or more and less than 85% for NaCl particles having a particle diameter of 0.3 μm when air containing the NaCl particles is passed through the pre-collection member at a flow rate of 5.3 cm/s, and has a thickness of more than 0.4 mm.
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公开(公告)号：US10688448B2
公开(公告)日：2020-06-23
申请号：US15100002
申请日：2014-12-01
发明人： Shinichi Chaen , Taku Yamanaka , Kohei Yasuda , Masahiko Yamada , Nobuki Uraoka , Tomohisa Konishi , Kunihiko Inui , Yoshiyuki Shibuya , Makoto Ono
IPC分类号： B01D71/36 , B01D69/02 , H01M8/1039 , B01D69/08 , C08J5/22 , B01J20/26 , B01D39/16 , H01M8/1018
摘要： The present invention provides a porous body having high strength, a small pore size, and excellent homogeneity. The porous body of the present invention includes polytetrafluoroethylene and has a microstructure that includes nodes and fibrils. The microstructure further includes, in addition to the nodes and the fibrils, fused points where a fibril that links two nodes and another fibril that links another two nodes are fused with each other.
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公开(公告)号：US09707504B2
公开(公告)日：2017-07-18
申请号：US14394946
申请日：2013-04-19
发明人： Shinichi Chaen , Hideyuki Kiyotani , Kunihiko Inui , Taku Yamanaka , Li Bao , Yoshiyuki Shibuya , Seigo Yamamoto , Makoto Kobayashi , Shunji Kasai , Hitoshi Niinuma
IPC分类号： B01D53/22 , B01D46/54 , B32B27/32 , C08L27/18 , B01D46/00 , B29D7/01 , B29D99/00 , B01D71/36 , B29K27/18 , B29K105/00
CPC分类号： B01D71/36 , B01D46/0001 , B01D46/0019 , B01D46/543 , B29D7/01 , B29D99/005 , B29K2027/18 , B29K2105/0005 , B32B27/322 , C08K3/36 , C08L27/18 , C08L83/04 , C08L2205/025 , C08L2205/03
摘要： A composition, a mixed powder and a material for molding have polytetrafluoroethylene as a main component. Each includes polytetrafluoroethylene that can be fibrillated, a non-hot melt processable component that is not fibrillated, and a hot melt processable component with a melting point of lower than 320° C. that is not fibrillated. The hot melt processable component is contained at equal to or more than 0.1% by weight but less than 20% by weight of a total weight. A filtering medium for an air filter includes a porous membrane made of these components, and an air permeable support. The porous membrane is manufactured, by mixing these components, extruding the mixture, rolling and drawing.
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公开(公告)号：US10406471B2
公开(公告)日：2019-09-10
申请号：US16235143
申请日：2018-12-28
发明人： Tatsumi Sakano , Kunihiko Inui , Yoshiyuki Shibuya
IPC分类号： B01D53/22 , B01D46/52 , B32B3/28 , D04H3/011 , B32B15/14 , B32B15/02 , B32B7/12 , B32B7/02 , B32B5/26 , B32B5/08 , B32B5/02 , D04H3/16 , B32B5/24 , B01D46/10 , B01D39/16 , B32B5/18 , B01D71/36 , B01D69/12 , B01D46/00 , D04H3/004 , D04H3/007 , B32B3/26
摘要： A filter medium includes first and second porous films mainly containing fluororesin, and a pre-collection member upstream of the first film. The pre-collection member has a pressure drop when air is passed through at a flow rate of 5.3 cm/s of between 15 Pa and 55 Pa, a collection efficiency of NaCl particles having a particle diameter of 0.3 μm when air containing the particles is passed through at a flow rate of 5.3 cm/s of between 25% and 80%, a thickness of 0.4 mm or less, and a PF value between 7 and 15. A ratio of the PF value of the pre-collection member to the PF value when the first and second films are overlapped, is between 0.20 and 0.45. The filter medium can be in a filter pack or filter unit, and produced by integrating the films and the pre-collection member using heat lamination.
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公开(公告)号：US10265654B2
公开(公告)日：2019-04-23
申请号：US15127367
申请日：2015-03-20
发明人： Yoshiyuki Shibuya , Hideyuki Kiyotani , Kunihiko Inui , Li Bao , Shinichi Chaen , Seigo Yamamoto , Makoto Kobayashi , Hitoshi Niinuma
摘要： A filtering medium includes first and second porous membranes mainly composed of fluororesin, and a plurality of air permeable supports to support the first and second membranes. The second membrane is disposed downstream of the first membrane. When air containing polyalphaolefin particles with a count median diameter of 0.25 μm is continuously passed through at a flow rate of 5.3 cm/sec and pressure loss is increased by 250 Pa, the first membrane has a dust retention amount larger than the second membrane. The filtering medium has a pressure loss of less than 200 Pa when air is passed through at a flow rate of 5.3 cm/sec. A collecting efficiency of NaCl particles with a particle diameter of 0.3 μm is 99.97% or more when air containing the NaCl particles is passed through at a flow rate of 5.3 cm/sec. The dust retention amount is 25 g/m2 or more.
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公开(公告)号：US10245545B2
公开(公告)日：2019-04-02
申请号：US15031438
申请日：2014-10-22
发明人： Satoshi Hara , Kunihiko Inui , Li Bao , Makoto Kobayashi , Hitoshi Niinuma
摘要： An embossed air filter filtration medium has at least one porous film and a plurality of air-permeable support materials supporting the at least one porous film. The least one porous film includes a fibril-formable polytetrafluoroethylene, a non-fibril-forming and non-hot-melt-processable component, and a non-fibril-forming and hot-melt-processable component having a melting point below 320° C. Surfaces of both sides of the air filter filtration medium are formed by two air-permeable support materials of the air-permeable support materials. The air filter filtration medium has a plurality of embossed projections. The embossed air filter filtration medium may be part of a filter pack, which may be part of an air filter unit. The embossed air filter filtration medium is manufactured by laminating air-permeable support materials on the at least one porous film and embossing the air filter filtration medium to form the projections.
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7.发明申请COMPOSITION HAVING PTFE AS MAIN COMPONENT, MIXED POWDER, MATERIAL FOR MOLDING, FILTERING MEDIUM FOR FILTER, AIR FILTER UNIT, AND A METHOD FOR MANUFACTURING A POROUS MEMBRANE 有权具有PTFE作为主要组分的组合物，混合粉末，用于模制的材料，用于过滤器的过滤器，空气过滤器单元以及用于制造多孔膜的方法公开(公告)号：US20150082757A1
公开(公告)日：2015-03-26
申请号：US14394946
申请日：2013-04-19
发明人： Shinichi Chaen , Hideyuki Kiyotani , Kunihiko Inui , Taku Yamanaka , Li Bao , Yoshiyuki Shibuya , Seigo Yamamoto , Makoto Kobayashi , Shunji Kasai , Hitoshi Niinuma
CPC分类号： B01D71/36 , B01D46/0001 , B01D46/0019 , B01D46/543 , B29D7/01 , B29D99/005 , B29K2027/18 , B29K2105/0005 , B32B27/322 , C08K3/36 , C08L27/18 , C08L83/04 , C08L2205/025 , C08L2205/03
摘要： A composition, a mixed power and a material for molding have polytetrafluoroethylene as a main component. Each includes polytetrafluoroethylene that can be fibrillated, a non-hot melt processable component that is not fibrillated, and a hot melt processable component with a melting point of lower than 320° C. that is not fibrillated. The hot melt processable component is contained at equal to or more than 0.1% by weight but less than 20% by weight of a total weight. A filtering medium for an air filter includes a porous membrane made of these components, and an air permeable support. The porous membrane is manufactured, by mixing these components, extruding the mixture, rolling and drawing.
摘要翻译： 组合物，混合动力和用于模塑的材料具有聚四氟乙烯作为主要成分。 每个都包括可以被原纤化的聚四氟乙烯，不原纤化的非热熔可加工组分，以及熔点低于320℃，不原纤化的热熔加工组分。 热熔可加工成分的含量为0.1重量％以上且小于20重量％。 用于空气过滤器的过滤介质包括由这些部件制成的多孔膜和透气性支撑体。 通过混合这些组分制造多孔膜，挤出混合物，轧制和拉伸。
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公开(公告)号：US11426690B2
公开(公告)日：2022-08-30
申请号：US16477270
申请日：2018-01-09
发明人： Satoshi Hara , Kunihiko Inui , Tatsumi Sakano
IPC分类号： B01D46/10
摘要： An air filter medium reduces a decrease in collection efficiency in the case where a main collection layer and a pre-collection layer having a lower collection efficiency than the main collection layer are used. An air filter medium that collects dust in gas includes a main collection layer and a pre-collection layer that has a lower collection efficiency of NaCl particles having a particle size of 0.3 μm than the main collection layer, is disposed on an upstream side of an air flow with respect to the main collection layer, and has water repellency.
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9.发明授权公开(公告)号：US10265661B2
公开(公告)日：2019-04-23
申请号：US15612678
申请日：2017-06-02
发明人： Shinichi Chaen , Hideyuki Kiyotani , Kunihiko Inui , Taku Yamanaka , Li Bao , Yoshiyuki Shibuya , Seigo Yamamoto , Makoto Kobayashi , Shunji Kasai , Hitoshi Niinuma
IPC分类号： B01D53/22 , B01D71/36 , B32B27/32 , C08L27/18 , B01D46/00 , B01D46/54 , B29D7/01 , B29D99/00 , C08K3/36 , C08L83/04 , B29K27/18 , B29K105/00
摘要： A mixed powder and a material for molding have polytetrafluoroethylene as a main component. Each includes polytetrafluoroethylene that can be fibrillated, a non-hot melt processable component that is not fibrillated, and a hot melt processable component with a melting point of lower than 320° C. that is not fibrillated. The non-hot melt processable component that is not fibrillated is contained in a range of 20 to 40% by weight of the total weight. The hot melt processable component is contained at equal to or more than 0.1% by weight but less than 20% by weight of the total weight. A drawn porous body includes a plurality of fibrils, and a plurality of knotted portions that are connected to each other by the fibrils.
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公开(公告)号：US10226730B2
公开(公告)日：2019-03-12
申请号：US15538597
申请日：2015-12-24
发明人： Tatsumi Sakano , Kunihiko Inui , Yoshiyuki Shibuya
IPC分类号： B01D53/22 , B01D46/52 , B01D69/12 , B01D71/36 , B32B5/24 , D04H3/16 , B01D39/16 , B01D46/00 , B32B5/18 , D04H3/004 , D04H3/007 , D04H3/011 , B01D46/10 , B32B5/02 , B32B5/08 , B32B5/26 , B32B7/02 , B32B7/12 , B32B15/02 , B32B15/14 , B32B3/26 , B32B3/28
摘要： A filter medium includes first and second porous films mainly containing fluororesin, and a pre-collection member upstream of the first film. The second film is downstream of the first film. The pre-collection member has a pressure drop when air is passed through at a flow rate of 5.3 cm/s of between 15 Pa and 55 Pa, a collection efficiency of NaCl particles having a particle diameter of 0.3 μm when air containing the particles is passed hrough at a flow rate of 5.3 cm/s of between 25% and 80%, a thickness of 0.4 mm or less, and a PF value between 7 and 15. The PF value={−log((100−collection efficiency (%))/100)}/(pressure drop (Pa)/1000). A ratio of the PF value of the pre-collection member to the PF value when the first and second films are overlapped, is between 0.20 and 0.45. The filter medium can be used in a filter pack or filter unit, and may be produced by integrating the first and second films and the pre-collection member using heat lamination.
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