COMPOSITE FILM FOR PACKAGE

PROBLEM TO BE SOLVED: To provide a composite film for a package containing at least a substrate layer (A) and a sealant layer (B) which is constituted by a relatively small number of essential components, and capable of exhibiting easy-peeling function even when a surface of a material to be coated...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	IMOTO SHOTA, TAI SHIGERU, KAWASAKI HIROYUKI, MITANI MASANORI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING 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 THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a composite film for a package containing at least a substrate layer (A) and a sealant layer (B) which is constituted by a relatively small number of essential components, and capable of exhibiting easy-peeling function even when a surface of a material to be coated (opposite material) is polyethylene or polypropylene.SOLUTION: A composite film for a package contains at least a substrate layer (A) and a sealant layer (B), and the sealant layer (B) is constituted by a resin composition (I) containing 20 to 80 mass% of polystyrene (b1) and 20 to 80 mass% of a polystyrene based elastomer (b2), where a total amount of (b1) and (b2) is 100 mass%, or a resin composition (II) containing 100 pts.wt. of the resin composition and 1 to 30 pts.wt. of a polyolefin-based resin, and a surface of a material to be coated is the polyolefin-based resin.