MULTI-LAYER POLYMER FOAM FILM FOR PACKAGING APPLICATIONS AND THE METHOD OF MAKING THE SAME

A multilayer foam film suitable for direct and non-direct food contact and aseptic packaging application and a method of making said film are disclosed. The multilayer foam film comprises: a foam layer including a plurality of cells, wherein at least 10% of the cells are closed cells, and two solid...

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Bibliographische Detailangaben
Hauptverfasser:	LINDENFELZER, Mark, E, SANIEI, Mehdi, FREDRICKSON, Eric, V
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 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 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 PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A multilayer foam film suitable for direct and non-direct food contact and aseptic packaging application and a method of making said film are disclosed. The multilayer foam film comprises: a foam layer including a plurality of cells, wherein at least 10% of the cells are closed cells, and two solid skin layers comprising HDPE on each side of the foam layer, and a solid layer comprising ethylene vinyl alcohol (EVOH), wherein the said foam layer is between one of the solid skin layers and the solid layer comprising EVOH, and the film has an overall thickness equal to or greater than 8 mils,, and the ratio of the oxygen transmission rate of the creased, folded or scored film in cc/m 2 /24hr, according to ASTM D3985, over that of an identical film prior to creasing, folding or scoring is less than 1.1.