公开(公告)号：WO2021262977A1

公开(公告)日：2021-12-30

申请号：PCT/US2021/038892

申请日：2021-06-24

Applicant: JABIL INC.

Inventor： RODGERS, Luke ,  FRY, Thomas

IPC: D04H1/4382 ,  D04H1/435 ,  D04H1/56 ,  D04H3/011 ,  D04H3/016 ,  D04H3/16 ,  D04H1/4291 ,  B01D39/16 ,  A62B23/025 ,  B01D2239/0435 ,  B01D2239/0622 ,  B01D2239/10 ,  B01D2239/1233 ,  B01D2239/1291 ,  B01D39/1623 ,  C08L67/04

Abstract: A blended polymer comprising, an amorphous thermoplastic polymer and a thermoplastic semi-crystalline polymer, each of the polymers being essentially miscible in the other and being blended at a weight ratio of amorphous polymer/semi-crystalline polymer of greater that 0.05 to about 20 forms a melt blown nonwoven fabric having essentially no defects with long fiber lengths having uniform diameters. The nonwoven fabrics when used as a filter may have greater than 95% efficiency at a pressure drop of less than 2 mm Hg even after being exposed to high temperatures (~70°C) for an hour or more.

公开(公告)号：WO2021203067A1

公开(公告)日：2021-10-07

申请号：PCT/US2021/025674

申请日：2021-04-02

Applicant: DONALDSON COMPANY, INC.

Inventor： JONES, Derek O. ,  WILLIS, Klenton T.

IPC: B01D39/08 ,  B01D39/16 ,  B01D39/18 ,  B01D2239/0216 ,  B01D2239/0233 ,  B01D2239/025 ,  B01D2239/0435 ,  B01D2239/0622 ,  B01D2239/0627 ,  B01D2239/0636 ,  B01D2239/065 ,  B01D2239/0654 ,  B01D2239/1216 ,  B01D2239/1225 ,  B01D2239/1233 ,  B01D2239/1266 ,  B01D2239/1291 ,  B01D39/083 ,  B01D39/163

Abstract: This disclosure describes a filtration composite that includes multiple layers of filtration media. In some embodiment, the filtration composite is preferably substantially glass-free or glass-free. When the composite is glass-free or substantially glass-free, the composite preferably exhibits capacity and efficiency comparable to or better than similar glass-containing filtration media. The composite includes a first nonwoven filtration medium including bicomponent fibers, efficiency fibers having a fiber diameter in a range of 1 micron to 5 microns, and microfibrillated fiber; an optional second nonwoven filtration medium; and a third nonwoven filtration medium including efficiency fibers having a fiber diameter of at least 0.1 micron and less than 1 micron.

公开(公告)号：WO2021191205A1

公开(公告)日：2021-09-30

申请号：PCT/EP2021/057432

申请日：2021-03-23

Applicant: SAMAIN, Daniel, François, Jean, Marie

Inventor： SAMAIN, Daniel, François, Jean, Marie

IPC: B01D39/18 ,  C08L1/08 ,  B01D2239/0428 ,  B01D2239/0668 ,  B01D2239/083 ,  B01D2239/10 ,  B01D2239/1291

Abstract: L'invention concerne un matériau filtrant perméable à l'air et imperméable aux excrétions aqueuses liquides humaines buccales, nasales et/ou oculaires comprenant au moins une liasse, dite liasse hydrophobe, d'au moins deux feuillets hydrophobes superposés et formés chacun de papier poreux, de grammage inférieur à 30 g/m2, chaque feuillet hydrophobe étant formé de fibres de cellulose, dites fibres de cellulose réticulées, liées entre elles par des liaisons hydrogène et par des liaisons covalentes formées avec au moins un groupement d'atomes de réticulation, caractérisé en ce qu'au moins une partie des hydroxyles desdites fibres de cellulose réticulées non engagés dans des liaisons hydrogène et accessibles aux gaz forment une liaison covalente avec un groupement acyle à chaîne hydrophobe.

公开(公告)号：WO2023007296A1

公开(公告)日：2023-02-02

申请号：PCT/IB2022/056497

申请日：2022-07-14

Applicant: SAATI S.P.A.

Inventor： SABATINI, Valentina ,  SIMONE, Martina ,  LUCIGNANO, Carmine ,  CANONICO, Paolo

IPC: B01D39/16 ,  H04R1/02 ,  H04R1/08 ,  B01D39/08 ,  B01D2239/025 ,  B01D2239/0421 ,  B01D2239/0428 ,  B01D2239/0442 ,  B01D2239/0631 ,  B01D2239/065 ,  B01D2239/1233 ,  B01D2239/1291 ,  B01D39/083 ,  B01D39/1623 ,  H04R1/023 ,  H04R1/086

Abstract: A composite filtering medium comprising a precision fabric, of the type with weft and warp, on the surface of which nanofibres are deposited by electrospinning. A method for producing the composite filtering medium, comprising a step of electrospinning for formation of nanofibres and a subsequent step of deposition of said nanofibres on a base fabric; the method comprises injection of the material for formation of the nanofibres, dissolved in a solvent or mixture of solvents, through a nozzle in order to spread it on an electrode; the method comprising application of a difference of potential between the nozzle and an electrode; the nanofibres being formed as a result of evaporation of the solvent or mixture of solvents, due to the electrical field, and stretching of the polymer deposited on the electrode, by means of the nozzle; the nanofibres thus formed being subsequently stretched and deposited on said base fabric.

公开(公告)号：WO2023278728A1

公开(公告)日：2023-01-05

申请号：PCT/US2022/035767

申请日：2022-06-30

Applicant: PEPSICO, INC.

Inventor： KAMALI, Farshad ,  FANTAPPIE, Giancarlo ,  JERSEY, Steven T.

IPC: B01D27/02 ,  B01D27/14 ,  A23L2/72 ,  B01D2201/12 ,  B01D2201/186 ,  B01D2239/0241 ,  B01D2239/025 ,  B01D2239/0407 ,  B01D2239/0435 ,  B01D2239/0618 ,  B01D2239/1216 ,  B01D2239/1241 ,  B01D2239/1291 ,  B01D27/06 ,  B01D27/144 ,  B01D27/146 ,  B01D29/21 ,  B01D29/56 ,  B01D36/02 ,  B01D39/1623 ,  B01D39/2017 ,  B01D39/2031 ,  B01D39/2072 ,  C02F1/003 ,  C02F1/48 ,  C02F1/688 ,  C02F2307/10

Abstract: A filter medium for removing contaminants from water includes a matrix including a plurality of fibers having an electrostatic charge such that the matrix is configured to remove contaminants from water by electrostatic attraction. The filter medium further includes a filler material including a ceramic substrate containing a mineral. The filler material is embedded in the matrix. When water flows through the filter medium, the mineral at least partially dissolves in the water such that a cavity is formed in the matrix in a location of the at least partially dissolved mineral.

公开(公告)号：WO2021255402A1

公开(公告)日：2021-12-23

申请号：PCT/FR2021/051111

申请日：2021-06-18

Applicant: ARKEMA FRANCE

Inventor： BONNET, Anthony ,  BOUTTI, Salima

IPC: C08J3/22 ,  B29B17/00 ,  B29L31/48 ,  A62B23/02 ,  B01D39/08 ,  B01D39/16 ,  B29B17/04 ,  A41D13/11 ,  A62B23/025 ,  B01D2239/025 ,  B01D2239/065 ,  B01D2239/1233 ,  B01D2239/1291 ,  B01D39/1623 ,  B29B17/0026 ,  B29B17/0036 ,  B29B2017/044 ,  B29L2031/4835 ,  C08J2323/12 ,  C08J2367/02 ,  C08J2367/04 ,  C08J2377/00 ,  C08J3/226

Abstract: L'invention concerne un procédé de recyclage de masques de protection respiratoire comprenant plusieurs couches fabriquées à partir d'un seul polymère thermoplastique choisi parmi le polypropylène, le polyéthylène téréphtalate, l'acide polylactique, les homopolymères et copolymères de polyamide 6 (PA6) et polyamides longues chaînes tels que le PA11 ou le PA12, et comprenant une couche de filtration en polyfluorure de vinylidène.

公开(公告)号：WO2021242802A1

公开(公告)日：2021-12-02

申请号：PCT/US2021/034150

申请日：2021-05-26

Applicant: HOLLINGSWORTH & VOSE COMPANY

Inventor： YEGYA RAMAN, Praveen, Kumar ,  SWAMINATHAN, Sneha

IPC: B01D39/00 ,  B32B5/02 ,  D04H1/728 ,  B01D2239/0428 ,  B01D2239/0622 ,  B01D2239/0627 ,  B01D2239/0631 ,  B01D2239/0681 ,  B01D2239/086 ,  B01D2239/1216 ,  B01D2239/1225 ,  B01D2239/1233 ,  B01D2239/1258 ,  B01D2239/1266 ,  B01D2239/1291 ,  B01D39/083 ,  B01D39/1615 ,  B01D39/1623 ,  B01D39/1676 ,  B01D39/18 ,  B01D39/2017

Abstract: Filter media, including those suitable for hydraulic, fuel, HVAC, HEPA, and/or other applications, and related methods are provided. In some embodiments, a filter media described herein may include a layer (e.g., a fine fiber layer) comprising a plurality of fibers comprising polyamide 11. In some embodiments, a filter media comprises a layer (e.g., a fine fiber layer) comprising a plurality of electro spun fibers comprising a material having one or more advantageous properties. In an exemplary set of embodiments, the plurality of fibers comprise polyamide 11 (e.g., Nylon 11). In some embodiments, the polyamide 11 fibers are produced by an electro spinning process.

公开(公告)号：WO2021220114A1

公开(公告)日：2021-11-04

申请号：PCT/IB2021/053363

申请日：2021-04-23

Applicant: N2 GLOBAL, SIA

Inventor： KUZMICS, Mihails ,  LAPSE, Mikelis ,  NEBOJS, Normunds

IPC: B01D39/12 ,  B01D39/20 ,  B60R21/264 ,  B60R21/26 ,  B01D2239/0457 ,  B01D2239/065 ,  B01D2239/1291 ,  B01D39/2017 ,  B01D39/2041

Abstract: Invention relates to filters capable to filter and absorb heat generated during activation of fire suppressing gas generating devices. A filtering and heat absorbing filter comprises at least the following layers: an inner layer of a steel mesh as a first layer disposed to an environment to be burned; an outer layer of the steel mesh as a last layer disposed to an environment to be protected from the by-products created during chemical reaction of the fire suppressing gas generating grains; and at least three intermediate layers, wherein each intermediate layer comprises a layer of a steel wool and a layer of a high silica glass fibre mat.

公开(公告)号：WO2021005258A2

公开(公告)日：2021-01-14

申请号：PCT/ES2020/070645

申请日：2020-10-23

Applicant: BIOINICIA, S.L. ,  CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS (CSIC)

Inventor： LAGARÓN CABELLO, José María ,  PARDO FIGUEREZ, Maria de las Mercedes ,  CHIVA FLOR, Alberto

IPC: B01D39/08 ,  B01D39/16 ,  A41D13/11 ,  A62B23/02 ,  B01D39/18 ,  A41D13/1192 ,  A41D31/305 ,  A61M16/0003 ,  A62B23/025 ,  B01D2239/0258 ,  B01D2239/0266 ,  B01D2239/0442 ,  B01D2239/0627 ,  B01D2239/0631 ,  B01D2239/065 ,  B01D2239/0668 ,  B01D2239/0672 ,  B01D2239/0681 ,  B01D2239/10 ,  B01D2239/1233 ,  B01D2239/1291 ,  B01D39/083 ,  B01D39/1615 ,  B01D39/1623

Abstract: La presente invención se enmarca en el área de los materiales poliméricos aplicados al sector de ¡a fabricación de materiales de uso en filtros para equipos de filtración tales como respiradores y para mascarillas protectoras. En particular, la invención se refiere a filtros multicapa para respiradores y mascarillas de protección que pueden ser biodegradables y que comprenden materiales de filtración basados en fibras ultrafinas obtenidas por procesado electro-hidrodinámico y aero-bidrodinámico y que ejercen protección pasiva del tipo FFP1, FFP2, N95 y FFP3 y que además pueden ser lavables y tener propiedades activas antimicrobianas.

公开(公告)号：WO2022241177A1

公开(公告)日：2022-11-17

申请号：PCT/US2022/029121

申请日：2022-05-13

Applicant: PURAFIL, INC.

Inventor： CHO, Donald ,  ENGLAND, William ,  LAWSON, Anthony ,  WIJBENGA, Gerrit ,  XIN, Mei

IPC: B01D39/14 ,  A62B18/02 ,  A62B23/00 ,  B01D2239/0233 ,  B01D2239/0442 ,  B01D2239/0618 ,  B01D2239/10 ,  B01D2239/1225 ,  B01D2239/1258 ,  B01D2239/1291 ,  B01D39/163 ,  B01D39/2048

Abstract: A product and method of manufacturing and producing antimicrobial fibers using an antimicrobial additive material. The method comprising using various antimicrobial metals incorporated and embedded into an inorganic material as metal ions within the additive material that can be formulated into a masterbatch precursor material and processed to manufacture fine or synthetic fibers using standard manufacturing processes for use in applications from face masks and respirators to air filters for HVAC and higher efficiency HEPA applications.