Process for producing a metal-plastic film composite material, metal-plastic film composite material produced according to said process and its use for producing packaging containers

A process is disclosed for producing a metal-plastic film composite material by sheet die extrusion of a statistical polypropylene copolymer into a plastic film. After leaving the sheet die, the polypropylene is cooled by means of cooling cylinders and the plastic film thus obtained is laminated ont...

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Bibliographische Detailangaben
1. Verfasser:	LEONIDAS KIRIAZIS
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A process is disclosed for producing a metal-plastic film composite material by sheet die extrusion of a statistical polypropylene copolymer into a plastic film. After leaving the sheet die, the polypropylene is cooled by means of cooling cylinders and the plastic film thus obtained is laminated onto at least one of the main surfaces of a metal sheet. The process is characterized in that the polypropylene copolymer is directly cooled after leaving the sheet die of the extruder down to temperatures between 0 C and 15 C. Once the plastic film has been laminated onto the metal sheet by means of a solvent-containing or aqueous adhesive, the metal-plastic film composite material thus obtained is cooled down to temperatures from 0 C to 25 C, when the film is laminated onto the metal sheet at temperatures above the melting point of the polypropylene copolymer, or when the plastic film is laminated onto the metal sheet by means of a coextruded bonding agent the metal-plastic film composite material thus obtained is cooled down to temperatures from 0 C to 25 C. Also disclosed is a metal-plastic film composite material produced according to this process and its use for producing packaging containers.