Method for producing coated vacuum metallized substrates with high vapour and oxygen barrier properties

The present invention relates to a process for preparing a metallised sheetlike substrate suitable as flexible packaging material having a moisture vapour transmission rate (MVTR) of below 20 g/m2 d and an oxygen transmission rate (OTR) of below 25 cm3/m2 d bar, comprising the steps of: a) depositin...

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Bibliographische Detailangaben
Hauptverfasser:	VANDEN ECKER JACKY, VAN EMMERICK PAUL
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL 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 DIFFUSION TREATMENT OF METALLIC MATERIAL HANDLING THIN OR FILAMENTARY MATERIAL IMPREGNATING OR COATING OF PAPER INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY PACKAGES PACKAGING ELEMENTS PACKING PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS STORING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TEXTILES TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	The present invention relates to a process for preparing a metallised sheetlike substrate suitable as flexible packaging material having a moisture vapour transmission rate (MVTR) of below 20 g/m2 d and an oxygen transmission rate (OTR) of below 25 cm3/m2 d bar, comprising the steps of: a) depositing on a non-woven sheetlike substrate at least a first coating composition selected from the group consisting of i) film forming protein in combination with a polymer binder; ii) a polyvinylidene chloride solution, emulsion or dispersion, and iii) an aqueous dispersion of a clay and a polymer binder and combinations thereof, to form a first coating layer, and b) applying a metal layer by vacuum deposition on the first coating layer; and to the products thus obtainable.