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1. (WO2019067582) COMPOSITE POLYMER FILMS
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Pub. No.: WO/2019/067582 International Application No.: PCT/US2018/052907
Publication Date: 04.04.2019 International Filing Date: 26.09.2018
IPC:
B32B 27/08 (2006.01) ,B32B 27/32 (2006.01) ,B32B 27/36 (2006.01) ,B65D 65/40 (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
32
comprising polyolefins
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
36
comprising polyesters
B PERFORMING OPERATIONS; TRANSPORTING
65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
D
CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
65
Wrappers or flexible covers; Packaging materials of special type or form
38
Packaging materials of special type or form
40
Applications of laminates for particular packaging purposes
Applicants:
DUPONT TEIJIN FILMS U.S. LIMITED PARTNERSHIP [US/US]; 974 Centre Road Chestnut Run Plaza 730 Wilmington, DE 19805, US
Inventors:
LIU, Shengsheng; US
DENG, Fenghua; US
ROBINSON, Julian, Neal; US
TAYLER, Moira; US
Agent:
DONNELLY, Rex, A.; US
SHARMA, Jaya; US
Priority Data:
62/563,69527.09.2017US
Title (EN) COMPOSITE POLYMER FILMS
(FR) FILMS POLYMÈRES COMPOSITES
Abstract:
(EN) A composite film includes a) a self-supporting layer of a polymer film (such as a polyester), b) an optional primer layer on the polymer film layer, wherein the primer layer includes a PVdX (X being halo), acrylic or vinyl resin; and c) a layer of heat seal composition on the primer layer, wherein the heat seal composition includes a polyolefin plastomer (POP) resin and a tackifier that constitutes at least 20 wt% of the heat seal composition. The composite film may be formed by applying a coating composition including the heat sea! composition in a solvent to a primer layer on the polymer film or directly on the polymer film in absence of the optional primer layer, and then evaporating the solvent. The composite film may be heat-sealed to a surface of a container or a self-supporting film.
(FR) L'invention concerne un film composite comprenant a) une couche autoportante d'un film polymère (tel qu'un polyester), b) une couche d'apprêt facultative sur la couche de film polymère, la couche d'apprêt comprenant une résine PVdX (X étant un halogène), acrylique ou vinylique; et c) une couche de composition de thermosoudage sur la couche d'apprêt, la composition de thermosoudage comprenant une résine de plastomère de polyoléfine (POP) et un agent poisseux qui représente au moins 20 % en poids de la composition de thermosoudage. Le film composite peut être formé par application d'une composition de revêtement comprenant la composition de thermosoudage dans un solvant sur une couche d'apprêt sur le film polymère ou directement sur le film polymère en l'absence de la couche d'apprêt facultative, puis par évaporation du solvant. Le film composite peut être thermosoudé sur une surface d'un récipient ou d'un film autoportant.
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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, 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)