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1. (WO2013158693) MULTILAYERED SHEET
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/158693 International Application No.: PCT/US2013/036857
Publication Date: 24.10.2013 International Filing Date: 17.04.2013
IPC:
B32B 5/02 (2006.01) ,B32B 13/08 (2006.01) ,B32B 27/34 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5
Layered products characterised by the non-homogeneity or physical structure of a layer
02
characterised by structural features of a layer comprising fibres or filaments
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
13
Layered products essentially comprising a water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
04
comprising such substances as the main or only constituent of a layer, next to another layer of a specific substance
08
of paper or cardboard
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27
Layered products essentially comprising synthetic resin
34
comprising polyamides
Applicants:
E. I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street Wilmington, Delaware 19898, US
Inventors:
KAWKA, Dariusz, Wlodzimierz; US
Agent:
GOLIAN, Andrew, G.; E. I. du Pont de Nemours and Company Legal Patent Records Center 4417 Lancaster Pike Wilmington, Delaware 19805, US
Priority Data:
61/625,83918.04.2012US
Title (EN) MULTILAYERED SHEET
(FR) FEUILLE MULTICOUCHES
Abstract:
(EN) This invention pertains to a layered sheet comprising a flame resistant wet-laid nonwoven carrier having a first and second surface and an inorganic refractory layer adjacent to at least one surface of the carrier wherein the refractory layer has a dry areal weight of from 15 to 50 gsm, the bond strength between the refractory layer and the surface of the carrier is at least 0.25 lb/in, wherein the carrier comprises from 40 to 70 weight percent of aramid fibers and from 30 to 60 weight percent of polymeric binder, is hydrophilic, has a smoothness on at least one surface of no less than 250 Sheffield units, a thickness of from 0.025 to 0.175 mm and a density of from 0.25 to 0.60 g/cc. Preferably the carrier is in the form of a paper.
(FR) La présente invention concerne une feuille à couches comprenant un support nontissé par voie humide ignifuge présentant une première et une seconde surface et une couche réfractaire inorganique adjacente à au moins une surface du support, la couche réfractaire présentant un poids surfacique sec de 15 à 50 gsm, la résistance d'adhésion entre la couche réfractaire et la surface du support est d'au moins 0,25 lb/in, le support comprenant de 40 à 70 pour cent en poids de fibres aramides et de 30 à 60 pour cent en poids de liant polymère, est hydrophile, présente un lissé sur au moins une surface inférieure à 250 unités Sheffield, une épaisseur de 0,025 à 0,175 mm et une densité de 0,25 à 0,60 g/cc. De préférence, le support prend la forme d'un papier.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, 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, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, 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, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, 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)