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1. (WO2007012016) FILM STRUCTURES HAVING IMPROVED OXYGEN TRANSMISSION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/012016 International Application No.: PCT/US2006/028070
Publication Date: 25.01.2007 International Filing Date: 19.07.2006
IPC:
B32B 27/32 (2006.01) ,B65D 65/40 (2006.01) ,C08J 5/18 (2006.01) ,C08L 23/08 (2006.01) ,C08K 5/098 (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
32
comprising polyolefins
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
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
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23
Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02
not modified by chemical after-treatment
04
Homopolymers or copolymers of ethene
08
Copolymers of ethene
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
K
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
5
Use of organic ingredients
04
Oxygen-containing compounds
09
Carboxylic acids; Metal salts thereof; Anhydrides thereof
098
Metal salts of carboxylic acids
Applicants:
E. I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street Wilmington, Delaware 19898, US (AllExceptUS)
CHEN, John, Chu [US/US]; US (UsOnly)
Inventors:
CHEN, John, Chu; US
Agent:
BROMELS, Marilyn, H.; E. I. du Pont de Nemours and Company Legal Patent Records Center 4417 Lancaster Pike Wilmington, Delaware 19805, US
Priority Data:
11/184,14319.07.2005US
Title (EN) FILM STRUCTURES HAVING IMPROVED OXYGEN TRANSMISSION
(FR) STRUCTURE DE FILMS A TRANSMISSION D'OXYGENE AMELIOREE
Abstract:
(EN) Disclosed are films comprising highly neutralized blends of ethylene acid copolymers, organic acid salts and ethylene containing polymers (e.g. ethylene/alkyl (meth)acrylate copolymers) and/or silicon-containing polymers to provide high oxygen permeability values (OPV). Such polymeric film and polymeric film structures have improved oxygen permeability and desirable water vapor transmission, formability, and structural strength to be useful in wrapping food products requiring breathable films such as case ready meat, fish, sausage, fresh produce, and the like.
(FR) La présente invention concerne des films comprenant des mélanges hautement neutralisés de copolymères d'acide éthylène, de sels d'acide organique et de polymères contenant de l'éthylène (par exemple des copolymères éthylène/alkyle(méth)acrylate) et/ou de polymères contenant du silicium afin d'obtenir des valeurs de perméabilité à l'oxygène élevées (OPV). Ces films polymères et ces structures de films polymères possèdent une perméabilité à l'oxygène améliorée et une transmission de vapeur d'eau souhaitable, une formabilité et une résistance structurelle convenant pour emballer des produits alimentaires nécessitant des films perméables à l'air tels que de la viande, du poisson, des saucisses, des produits frais prêts en barquette et d'autres produits similaires.
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, 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, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, 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 Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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)
Also published as:
EP2269819EP1907208JP2009503148CN101223032AU2006269891IN8822/DELNP/2007