COATED FILM

The adherence of hydrophilic layers to dimensionally stable polyester films is improved by means of an adhesive layer by a process comprising applying the adhesive layer to an unstretched or only monoaxially stretched polyester film, stretching the thus covered polyester film biaxially or in a direc...

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Bibliographische Detailangaben
Hauptverfasser:	VAN GOSSUM, LUCIEN J, VAN PAESSCHEN, AUGUST J
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON DYES ELECTROGRAPHY GENERAL PROCESSES OF COMPOUNDING HOLOGRAPHY LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS POLISHES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS AS ADHESIVES WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The adherence of hydrophilic layers to dimensionally stable polyester films is improved by means of an adhesive layer by a process comprising applying the adhesive layer to an unstretched or only monoaxially stretched polyester film, stretching the thus covered polyester film biaxially or in a direction perpendicular to the first stretching direction and heat-setting the thus treated film at 180-225.degree.C, whereafter a hydrophilic coating is applied to the heat-set adhesive layer. This adhesive layer comprises 25-60% by weight of a chlorinecontaining copolymer, 15-40 % by weight of a butadiene copolymer, and 2-10 % by weight of a water-soluble melamine-formal-dehyde or hydandoin-formaldehyde resin. GV.938 PCT