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Machine translation
1. (WO2001026778) METHOD AND APPARATUS FOR MAKING A FIBROUS ELECTRET WEB USING A WETTING LIQUID AND AN AQUEOUS POLAR LIQUID
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2001/026778    International Application No.:    PCT/US2000/001829
Publication Date: 19.04.2001 International Filing Date: 24.01.2000
Chapter 2 Demand Filed:    18.07.2000    
IPC:
A62B 18/02 (2006.01), B01D 39/14 (2006.01), B01D 39/16 (2006.01), B03C 3/28 (2006.01), D01F 1/10 (2006.01), D01F 6/06 (2006.01), D04H 1/42 (2012.01), D06M 11/00 (2006.01), D06M 11/05 (2006.01), D06M 13/127 (2006.01), D06M 13/144 (2006.01), D06M 13/148 (2006.01), D06M 13/352 (2006.01), D06M 13/358 (2006.01), D06M 23/10 (2006.01), D06M 101/20 (2006.01)
Applicants: 3M INNOVATIVE PROPERTIES COMPANY [US/US]; 3M Center, Post Office Box 33427, Saint Paul, MN 55133-3427 (US)
Inventors: EITZMAN, Philip, D.; (US).
ROUSSEAU, Alan, D.; (US)
Agent: HANSON, Karl, G.; Office of Intellectual Property Counsel, Post Office Box 33427, Saint Paul, MN 55133-3427 (US).
VOSSIUS & PARTNER (No. 31); Patentanwälte, P.O. Box 86 07 67, D-81634 München (DE)
Priority Data:
09/415,291 08.10.1999 US
Title (EN) METHOD AND APPARATUS FOR MAKING A FIBROUS ELECTRET WEB USING A WETTING LIQUID AND AN AQUEOUS POLAR LIQUID
(FR) PROCEDE ET APPAREIL PERMETTANT DE FABRIQUER UNE BANDE FIBREUSE DE TYPE ELECTRET A L'AIDE D'UN LIQUIDE MOUILLANT ET D'UN LIQUIDE POLAIRE AQUEUX
Abstract: front page image
(EN)A method for imparting an electrostatic charge to a nonwoven fibrous web (20). The fibrous web (20) is wetted with a wetting liquid (24), followed by being saturated with an aqueous polar liquid (30) and drying (31). The resulting dried product is an electret article (43) that could be used as an air filter in, for example, a respirator (50).
(FR)Cette invention a trait un procédé permettant de conférer une charge électrostatique à une bande fibreuse non tissée (20). On mouille cette bande fibreuse (20) avec un liquide mouillant (24), puis on la sature avec un liquide polaire aqueux (30) et on la sèche (32). Le produit sec résultant est un article du type électret (43) pouvant être notamment utilisé comme filtre à air pour respirateur.
Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, DK, DM, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)