COMPOSITE FILM

The invention relates to a composite film (1) for producing lids, comprising an aluminum layer (2) and an extrusion layer (3), which is extruded onto the aluminum layer (2) in multiple layers by coextrusion. The extrusion layer (3) has a sealing layer (6) and an adhesion promoter layer (5), which is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WEGENBERGER, ALFRED, RELOTA, PATRICK, FEICHTINGER, ROLAND, STEINER, MATTHIAS
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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 METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	The invention relates to a composite film (1) for producing lids, comprising an aluminum layer (2) and an extrusion layer (3), which is extruded onto the aluminum layer (2) in multiple layers by coextrusion. The extrusion layer (3) has a sealing layer (6) and an adhesion promoter layer (5), which is arranged between the sealing layer (6) and the aluminum layer (2). The sealing layer (6) comprises a polymer matrix, which has at least a first polymer constituent and a second polymer constituent. A peel-force additive, in particular a mineral filler, such as talcum, is added to the polymer matrix. The first polymer constituent is selected from a polyolefin, and the second polymer constituent is selected from polyolefin plastomers and/or polyolefin elastomers each having a density of less than 900 kg/m³, and from combinations of such materials.