SHADING FILM

PROBLEM TO BE SOLVED: To provide a shading film suitable for packaging work in a dark room, excellent in heal-sealing strength, mechanical strength and durability and suitable as a packaging material and an industrial film for photosensitive paper or a photosensitive film. SOLUTION: A shading film i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NAGAOKA HARUKI, NISHINO KAZUNARI
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR 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 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 PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a shading film suitable for packaging work in a dark room, excellent in heal-sealing strength, mechanical strength and durability and suitable as a packaging material and an industrial film for photosensitive paper or a photosensitive film. SOLUTION: A shading film is constituted by integrally laminating (1) a first layer comprising an ethylenic polymer colorless or colored by a color other than a black color, (2) a second layer comprising an ethylenic polymer colored black, (3) a third adhesive layer, (4) a fourth layer comprising the ethylenic polymer colored black and (5) a fifth layer comprising an uncolored ethylenic polymer in this order.