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Machine translation
1. (WO2007076015) COMPOSITE DUAL LAYER HEPA FILTER
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2007/076015 International Application No.: PCT/US2006/049036
Publication Date: 05.07.2007 International Filing Date: 21.12.2006
IPC:
B41J 29/13 (2006.01)
Applicants: KEELER, Scott[US/US]; US (UsOnly)
CAMBO, William, H.[US/US]; US (UsOnly)
LYDALL, INC.[US/US]; PO Box 151 One Colonial Road Manchester, Connecticut 06042-0151, US (AllExceptUS)
Inventors: KEELER, Scott; US
CAMBO, William, H.; US
Agent: LEWIS, Paul C.; BIRCH, STEWART, KOLASCH & BIRCH, LLP P.O. Box 747 Falls Church, Virginia 22040-0747, US
Priority Data:
60/752,38122.12.2005US
Title (EN) COMPOSITE DUAL LAYER HEPA FILTER
(FR) FILTRE HEPA A DOUBLE COUCHE COMPOSITE
Abstract: front page image
(EN) The invention provides a composite, dual layer filtration material (1) having a gradient structure, comprising a dust layer (2) of wet laid dust fibers (5), a HEPA layer (3) of wet laid HEPA fibers (6) laid on top of the dust layer (2), and a transition zone (4) between dust layer (2) and HEPA layer (3) of a mixture of wet laid dust fibers (5) and wet laid HEPA fibers (6), and wherein the transition zone (4) so bonds the dust layer (2) to the HEPA layer (3) such that the composite (1) may be pleated into a pleated HEPA filtration material (30) without substantial disruption of the bond between the two layers. A corresponding process is also provided.
(FR) La présente invention concerne un matériau de filtrage composite double couche (1) ayant une structure gradiante, comprenant une couche de poussière (2) de fibres de poussière par voie humide (5), une couche (3) de fibres HEPA par voie humide (6) déposées sur la couche de poussière (2) et une zone de transition (4) entre la couche de poussière (2) et la couche HEPA (3) d'un mélange de fibres de poussière par voie humide (5), ainsi que des fibres HEPA par voie humide (6) ; la zone de transition (4) lie ainsi la couche de poussière (2) à la couche HEPA (3) de sorte que le composite (1) puisse être plié dans un matériau de filtrage HEPA plié (30) sans interruption sensible de la liaison entre les deux couches. L'invention concerne également un procédé correspondant.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)