Patent SG-11201900191X-A (SG)
Title: Multilayer sheet for thermoforming having improved sagging resistance
Inventor: ROUSSEAUX DIMITRI
IPC: B32B27/36
Filed: 2017-07-18
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 1111111111111111111111111111111111111111111111111111111111111111111111111111111111 Organization International Bureau (10) International Publication Number (43) International Publication Date . . .., . ... WO 2018/015387 Al 25 January 2018 (25.01.2018) WI P0 I P C T (51) International Patent Classification: TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, B32B 27/28 (2006.01) B32B 27/36 (2006.01) KM, ML, MR, NE, SN, TD, TG). B32B 27/30 (2006.01) B32B 7/02 (2006.01) B32B 27/32 (2006.01) Declarations under Rule 4.17: (21) International Application Number: — of inventorship (Rule 4.17(iv)) PCT/EP2017/068130 Published: (22) International Filing Date: — with international search report (Art. 21(3)) 18 July 2017 (18.07.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16180260.8 20 July 2016 (20.07.2016) EP (71) Applicant: TOTAL RESEARCH & TECHNOLOGY FELUY [BE/BE]; Zone Industrielle C, B-7181 Seneffe (BE). (72) Inventors: ROUSSEAUX, Dimitri; Avenue du Monde 10, 1400 NIVELLES (BE). BOUKALIDIS, Cristo; 20, me des deportes, 7332 SIRAULT (BE). Agent: GARCIA MARTIN, Margarita; Zone Industrielle (74) C, 7181 Seneffe (BE). Designated States (unless otherwise indicated, for every kind of national protection available): 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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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, SA, 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. (81) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (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, (84) ,_ 1 (54) Title: MULTILAYER SHEET FOR THERMOFORMING HAVING IMPROVED SAGGING RESISTANCE (57) : The invention relates to a multilayered sheet for a thermoforming process having improved resistance to sagging, the IN sheet comprising at least one layer of each of: a surface layer A comprising a composite material, wherein said composite material GC , r ., comprises a first amorphous polymer having a glass transition temperature Tgl and from 0.05 wt% to 4.0 wt% as based on the total irj weight of the composite material of a conductive material; a substrate layer B comprising a polymer composition, wherein said polymer 1 -1 composition comprises at least a second amorphous polymer having a glass transition temperature Tg2, the glass transition temperature 0 --.... Tg2 of the second amorphous polymer being higher than the glass transition temperature Tgl of the first amorphous polymer; wherein Ot the second amorphous polymer has a heat deflection temperature of at least 85 °C as determined in accordance with ISO 75-2/A; and 1-1 C wherein at least one of the outer layers is the surface layer A. The invention is also concerned by thermoformed articles produced from ei said multilayered sheets. C