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：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：US10245545B2

公开(公告)日：2019-04-02

申请号：US15031438

申请日：2014-10-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Satoshi Hara ,  Kunihiko Inui ,  Li Bao ,  Makoto Kobayashi ,  Hitoshi Niinuma

IPC: B01D53/02 ,  B01D46/52 ,  B01D39/16 ,  B01D46/00 ,  C08L27/18

Abstract: 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.

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：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.