FRESHNESS-RETAINING POLYESTER FILM AND PACKAGE

The present invention provides a polyester-based film for keeping freshness, comprising a polyester-based resin layer comprising ethylene terephthalate as a main component, wherein the polyester-based film satisfies the requirements (1) to (4); that can extend the shelf life of the contents such as...

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Bibliographische Detailangaben
Hauptverfasser:	HARUTA, Masayuki, HASHIDA, Tomoyuki, ISHIMARU, Shintaro, MARUYAMA, Hiroko
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING GENERAL PROCESSES OF COMPOUNDING HANDLING THIN OR FILAMENTARY MATERIAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention provides a polyester-based film for keeping freshness, comprising a polyester-based resin layer comprising ethylene terephthalate as a main component, wherein the polyester-based film satisfies the requirements (1) to (4); that can extend the shelf life of the contents such as fruits and vegetables when using as a packaging bag, increase a commodity value, and re-close even after the packaging bag opened.(1) the film has an O2-transmission rate of 50 (cc/(m2·d·atm)] or more and 1000 [cc/(m2·d·atm)] or less when measured at a temperature of 23°C and a relative humidity of 65%RH,(2) the film has a CO2-transmission rate of 200 [cc/(m2·d·atm)] or more and 5000 [cc/(m2·d·atm)] or less when measured at a temperature of 23°C,(3) the film has a water vapor transmission rate of 20 [g/(m2·d)] or more and 400 [g/(m2·d)] or less when measured at a temperature of 40°C and a relative humidity of 90%RH, and(4) the film has an angle after folding the film of 20° or more and 80° or less.