METALIZED POLYPROPYLENE FILM

PURPOSE:The titled film having a high metalizing strength and excellent laminatability with other substrates and being suitable as a food-packaging material, prepared by subjecting the surface of a polypropylene film having a specified density to a corona discharge treatment and then metalizing the...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHINO TADAO, IKEDA FUJIO, YOSHITAKE TEIICHI, HOSHINO TOSHIO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G 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 COMPOSITIONS BASED THEREON DIFFUSION TREATMENT OF METALLIC MATERIAL GENERAL PROCESSES OF COMPOUNDING 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 ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:The titled film having a high metalizing strength and excellent laminatability with other substrates and being suitable as a food-packaging material, prepared by subjecting the surface of a polypropylene film having a specified density to a corona discharge treatment and then metalizing the treated film. CONSTITUTION:In forming a film by melting polypropylene or a propylene copolymer and extruding the melt through an extruder die, a polypropylene film, film density 0.895-0.902, or a propylene copolymer film, film density 0.891- 0.899, is prepared by, for example, a process including keeping the surface of the chill roll at 50-80 deg.C or a process including cooling by the use of cooling water of a temperature of 60-90 deg.C. Then the purpose metalized propylene film is prepared by subjecting the above-prepared film to a corona discharge treatment and then metalizing the treated film with a metal such as aluminum or chromium by, for example, vacuum deposition or sputtering.