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1. (WO2019050469) MULTILAYER FILM WITH REVERSIBLE HAZE
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Pub. No.: WO/2019/050469 International Application No.: PCT/SG2017/050439
Publication Date: 14.03.2019 International Filing Date: 05.09.2017
IPC:
B32B 27/08 (2006.01) ,B32B 27/30 (2006.01) ,C08J 5/18 (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
27
Layered products essentially comprising synthetic resin
06
as the main or only constituent of a layer next to another layer of a specific substance
08
of synthetic resin of a different kind
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
30
comprising vinyl resin; comprising acrylic resin
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5
Manufacture of articles or shaped materials containing macromolecular substances
18
Manufacture of films or sheets
Applicants:
CHUA, Rou Hua [SG/SG]; SG
DOW GLOBAL TECHNOLOGIES LLC [US/US]; 2040 Dow Center, Midland, Michigan, Michigan 48674, US
Inventors:
CHUA, Rou Hua; SG
YEE, Wu Aik; SG
LOW, Bee Tin; SG
SUBRAMANIAN, Muthu Selva Annamalai; SG
MAEHARA, Yutaka; JP
WANG, Jian; SG
Agent:
SPRUSON & FERGUSON (ASIA) PTE LTD; P.O. Box 1531 Robinson Road Post Office Singapore 903031, SG
Priority Data:
Title (EN) MULTILAYER FILM WITH REVERSIBLE HAZE
(FR) FILM MULTICOUCHE À VOILE RÉVERSIBLE
Abstract:
(EN) The present disclosure provides a process. In an embodiment, the process includes elongating a multilayer film to a impart a haze value greater than 30% to the multilayer film. The multilayer film has at least two layers: (A) a core layer composed of an ethylene/α-olefin multi-block copolymer and (B) a first skin layer in contact with the core layer, the skin layer composed of an ethylene-based polymer. The process includes releasing the elongating force from the elongated multilayer film to form a hazed multilayer film having a haze value greater than 30%. The process includes stretching the hazed multilayer film to form a stretched multilayer film having a clarity value greater than 80%. The process includes relaxing the stretch force from the stretched multilayer film to form a relaxed multilayer film having a haze value greater than 30%.
(FR) La présente invention concerne un procédé. Dans un mode de réalisation, le procédé comprend l'allongement d'un film multicouche pour donner une valeur de trouble supérieure à 30% au film multicouche. Le film multicouche comporte au moins deux couches: (A) une couche centrale composée d'un copolymère à blocs multiples d'éthylène/α-oléfine et (B) une première couche de peau en contact avec la couche centrale, la couche de peau étant composée d'un polymère à base d'éthylène. Le procédé comprend la libération de la force d'allongement du film multicouche allongé pour former un film multicouche bizuté ayant une valeur de trouble supérieure à 30%. Le procédé comprend l'étirement du film multicouche bizuté pour former un film multicouche étiré ayant une valeur de clarté supérieure à 80%. Le procédé comprend le relâchement de la force d'étirement du film multicouche étiré pour former un film multicouche relâché ayant une valeur de trouble supérieure à 30%.
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, 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, 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, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)