EP 4168615 A1 20230426 - ELECTROSTATICALLY CHARGED POROUS NONWOVEN WEB, MEMBRANE AND MASK DERIVED THEREFROM AND METHODS FOR MANUFACTURING AND CLEANING
Title (en)
ELECTROSTATICALLY CHARGED POROUS NONWOVEN WEB, MEMBRANE AND MASK DERIVED THEREFROM AND METHODS FOR MANUFACTURING AND CLEANING
Title (de)
ELEKTROSTATISCH GELADENES PORÖSES VLIES, MEMBRAN UND MASKE DARAUS SOWIE VERFAHREN ZUR HERSTELLUNG UND REINIGUNG
Title (fr)
VOILE NON TISSÉ, POREUX, ET CHARGÉ ÉLECTROSTATIQUEMENT, MEMBRANE ET MASQUE EN DÉRIVANT ET PROCÉDÉS DE FABRICATION ET DE NETTOYAGE
Publication
Application
Priority
- FR 2006469 A 20200619
- FR 2006468 A 20200619
- FR 2006471 A 20200619
- FR 2006472 A 20200619
- FR 2021051088 W 20210617
Abstract (en)
[origin: WO2021255391A1] The invention relates to a porous and electrostatically charged nonwoven web, suitable for filtering nanoscale and/or submicrometer scale aerosols, comprising a multiplicity of fibres having composition C1, said composition C1 being based on at least one polymer P1, essentially consisting of repeating units derived from vinylidene fluoride (VDF) and vinylidene trifluoride (TrFE), the molar proportion of the units derived from TrFE being 18% to 28% relative to the total number of moles of the units derived from VDF and TrFE. The invention also relates to a method for producing the web, to a membrane comprising the web and to a method for washing/sterilizing the web or membrane.
IPC 8 full level
D04H 1/728 (2012.01); A41D 13/00 (2006.01); A41D 13/11 (2006.01); B01D 39/16 (2006.01); D01D 5/00 (2006.01); D01F 6/12 (2006.01); D04H 1/4318 (2012.01); D04H 1/732 (2012.01)
CPC (source: EP US)
B01D 65/022 (2013.01 - US); B01D 69/02 (2013.01 - US); B01D 69/1071 (2022.08 - US); B01D 71/34 (2013.01 - US); B01D 71/4011 (2022.08 - US); B32B 5/022 (2013.01 - EP US); B32B 5/266 (2021.05 - EP US); D01D 1/02 (2013.01 - EP); D01D 5/0038 (2013.01 - EP); D01F 6/12 (2013.01 - EP); D01F 8/06 (2013.01 - EP); D04H 1/4318 (2013.01 - EP US); D04H 1/724 (2013.01 - US); D04H 1/732 (2013.01 - EP); B01D 2321/32 (2013.01 - US); B01D 2325/52 (2022.08 - US); B32B 2250/20 (2013.01 - US); B32B 2262/0238 (2013.01 - EP US); B32B 2262/0246 (2013.01 - EP); B32B 2262/0253 (2013.01 - EP); B32B 2262/0284 (2013.01 - EP); B32B 2571/00 (2013.01 - US); D10B 2505/04 (2013.01 - US)
Citation (search report)
See references of WO 2021255390A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021255391 A1 20211223; CN 115885067 A 20230331; EP 4168615 A1 20230426; JP 2023530163 A 20230713; US 2023226501 A1 20230720; WO 2021255390 A1 20211223
DOCDB simple family (application)
FR 2021051089 W 20210617; CN 202180050987 A 20210617; EP 21740124 A 20210617; FR 2021051088 W 20210617; JP 2022577589 A 20210617; US 202118002156 A 20210617