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公开(公告)号：US20220145028A1
公开(公告)日：2022-05-12
申请号：US17598395
申请日：2020-03-13
摘要： An object of the present invention is to provide a film capable of enhancing snow sliding property and highly preventing snow accretion and/or ice accretion on a structure. The film of the present invention includes, as an outermost layer, an oil-containing layer containing an oil component in a resin, wherein the oil component bleeds from a surface of the oil-containing layer at a temperature not more than a predetermined temperature, the surface of the oil-containing layer has a concave-convex configuration, and the arithmetic mean height (Sa) in a 3.2 cm×3.2 cm region on the surface of the oil-containing layer is 4 μm or more.
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公开(公告)号：US20240359140A1
公开(公告)日：2024-10-31
申请号：US18292208
申请日：2022-07-14
CPC分类号： B01D63/107 , B01D53/228 , B01D71/54 , B01D71/70 , B01D2256/10 , B01D2257/504 , B01D2313/143 , B01D2313/146
摘要： The present invention provides a spiral membrane element suitable for suppressing a decrease in a permeation rate of a permeated fluid from a separation membrane. The spiral membrane element of the present invention includes a central tube and a separation membrane that is wound around the central tube. The central tube has an opening for guiding, to an inside of the central tube, a permeated fluid having permeated through the separation membrane. The opening extends in a longitudinal direction of the central tube.
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公开(公告)号：US20240149221A1
公开(公告)日：2024-05-09
申请号：US18281116
申请日：2022-02-28
IPC分类号： B01D63/10 , B01D53/22 , B01D61/36 , B01D69/02 , B01D69/12 , B01D71/52 , B01D71/56 , B01D71/70 , B01D71/80
CPC分类号： B01D63/103 , B01D53/228 , B01D61/362 , B01D63/1031 , B01D63/107 , B01D69/02 , B01D69/1216 , B01D71/52 , B01D71/56 , B01D71/70 , B01D71/80 , B01D2313/146 , B01D2315/10 , B01D2325/20
摘要： The present invention provides a spiral membrane element suitable for suppressing a decrease in a permeation rate (or a permeation flux) of a permeated fluid from a separation membrane. A spiral membrane element of the present invention includes: a central tube; a membrane leaf that has a separation membrane and a permeation spacer and is wound around the central tube; and a flow passage spacer that is connected to the permeation spacer and is wound around the central tube on a side closer to the central tube than the membrane leaf is. A pressure loss of the flow passage spacer measured by a predetermined test is smaller than a pressure loss of the permeation spacer.
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