JPH05286087

PURPOSE:To impart heat resistance and gas barrier properties to a film or a tube for packaging. CONSTITUTION:A composite film having two layer or three layer structure prepared through co-extrusion is composed of a film layer 1 consisting of single plastics and a film layer 2, in which a radiation e...

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Bibliographische Detailangaben
Hauptverfasser:	MUKAI SADAYOSHI, NAKAI KOJI
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON 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 GENERAL PROCESSES OF COMPOUNDING 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 WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To impart heat resistance and gas barrier properties to a film or a tube for packaging. CONSTITUTION:A composite film having two layer or three layer structure prepared through co-extrusion is composed of a film layer 1 consisting of single plastics and a film layer 2, in which a radiation energy absorbent is added to plastics (such as a vinylidene compound) decayed by radiation. The composite film is irradiated with a dosage, in which the gel proportional rate of the plastic single layer 1 reaches 70% or more, by using radiation such as electron rays. The composite film is changed into the composite layer of a high crosslinked layer 3 made up of single plastics and a non-crosslinked layer 4, in which the decay of plastics is prevented by the effect of the addition of the radiation energy absorbent.