公开(公告)号：US10537836B2

公开(公告)日：2020-01-21

申请号：US16084127

申请日：2017-03-08

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tatsumi Sakano ,  Kunihiko Inui ,  Yoshiyuki Shibuya ,  Hideyuki Kiyotani

IPC: B01D53/22 ,  B01D39/16 ,  B01D46/10 ,  B01D39/20 ,  B01D71/36 ,  B01D63/14

Abstract: 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.

公开(公告)号：US20150200402A1

公开(公告)日：2015-07-16

申请号：US14412900

申请日：2013-07-08

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Hiroyuki Yoshimoto ,  Shinichi Chaen ,  Kazuya Kawahara ,  Yoshiyuki Shibuya ,  Masamichi Sukegawa

IPC: H01M4/86

CPC classification number: H01M4/8673 ,  C08J3/20 ,  C08J5/18 ,  C08J2327/18 ,  C08K3/04 ,  C08K2201/014 ,  H01B1/24 ,  H01M8/0234 ,  H01M8/0239 ,  H01M8/0243 ,  H01M2008/1095 ,  C08L27/18

Abstract: The present invention aims to provide a sheet having high conductivity in the thickness direction and excellent breathability, water repellency, corrosion resistance, and flexibility so as to be suitably used for an electrode of fuel cells and the like. The present invention also aims to provide an electrode and a fuel cell. The present invention provides a sheet containing polytetrafluoroethylene, carbon black, and graphite, the polytetrafluoroethylene having a standard specific gravity of 2.14 to 2.28, a total amount of the carbon black and the graphite being more than 35% by mass of a total amount of the polytetrafluoroethylene, the carbon black, and the graphite.

Abstract translation: 本发明的目的在于提供一种在厚度方向上具有高导电性和优异的透气性，防水性，耐腐蚀性和柔软性的片材，以适合用于燃料电池等的电极。 本发明的目的还在于提供一种电极和燃料电池。 本发明提供一种含有聚四氟乙烯，炭黑和石墨的片材，所述聚四氟乙烯的标准比重为2.14〜2.28，碳黑和石墨的总量为总量的35质量％ 聚四氟乙烯，炭黑和石墨。

公开(公告)号：US20150082757A1

公开(公告)日：2015-03-26

申请号：US14394946

申请日：2013-04-19

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Shinichi Chaen ,  Hideyuki Kiyotani ,  Kunihiko Inui ,  Taku Yamanaka ,  Li Bao ,  Yoshiyuki Shibuya ,  Seigo Yamamoto ,  Makoto Kobayashi ,  Shunji Kasai ,  Hitoshi Niinuma

IPC: B01D46/54 ,  B29D99/00 ,  B29D7/01 ,  B01D46/00 ,  C08L27/18

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US10406471B2

公开(公告)日：2019-09-10

申请号：US16235143

申请日：2018-12-28

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tatsumi Sakano ,  Kunihiko Inui ,  Yoshiyuki Shibuya

IPC: 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

Abstract: 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.

公开(公告)号：US10265654B2

公开(公告)日：2019-04-23

申请号：US15127367

申请日：2015-03-20

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yoshiyuki Shibuya ,  Hideyuki Kiyotani ,  Kunihiko Inui ,  Li Bao ,  Shinichi Chaen ,  Seigo Yamamoto ,  Makoto Kobayashi ,  Hitoshi Niinuma

IPC: B01D53/22 ,  B01D46/54 ,  B01D69/10 ,  B01D39/16 ,  B01D46/52 ,  B01D71/36

Abstract: 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.

公开(公告)号：US10688448B2

公开(公告)日：2020-06-23

申请号：US15100002

申请日：2014-12-01

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Shinichi Chaen ,  Taku Yamanaka ,  Kohei Yasuda ,  Masahiko Yamada ,  Nobuki Uraoka ,  Tomohisa Konishi ,  Kunihiko Inui ,  Yoshiyuki Shibuya ,  Makoto Ono

IPC: B01D71/36 ,  B01D69/02 ,  H01M8/1039 ,  B01D69/08 ,  C08J5/22 ,  B01J20/26 ,  B01D39/16 ,  H01M8/1018

Abstract: 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.

公开(公告)号：US09707504B2

公开(公告)日：2017-07-18

申请号：US14394946

申请日：2013-04-19

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Shinichi Chaen ,  Hideyuki Kiyotani ,  Kunihiko Inui ,  Taku Yamanaka ,  Li Bao ,  Yoshiyuki Shibuya ,  Seigo Yamamoto ,  Makoto Kobayashi ,  Shunji Kasai ,  Hitoshi Niinuma

IPC: B01D53/22 ,  B01D46/54 ,  B32B27/32 ,  C08L27/18 ,  B01D46/00 ,  B29D7/01 ,  B29D99/00 ,  B01D71/36 ,  B29K27/18 ,  B29K105/00

CPC classification number: 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

Abstract: 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.

公开(公告)号：US10265661B2

公开(公告)日：2019-04-23

申请号：US15612678

申请日：2017-06-02

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Shinichi Chaen ,  Hideyuki Kiyotani ,  Kunihiko Inui ,  Taku Yamanaka ,  Li Bao ,  Yoshiyuki Shibuya ,  Seigo Yamamoto ,  Makoto Kobayashi ,  Shunji Kasai ,  Hitoshi Niinuma

IPC: B01D53/22 ,  B01D71/36 ,  B32B27/32 ,  C08L27/18 ,  B01D46/00 ,  B01D46/54 ,  B29D7/01 ,  B29D99/00 ,  C08K3/36 ,  C08L83/04 ,  B29K27/18 ,  B29K105/00

Abstract: 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.

公开(公告)号：US10226730B2

公开(公告)日：2019-03-12

申请号：US15538597

申请日：2015-12-24

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tatsumi Sakano ,  Kunihiko Inui ,  Yoshiyuki Shibuya

IPC: 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

Abstract: 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.