Composite film, and laminated film and laminate in which composite film is used

Provided are: a composite film having at least two layers, i.e., a base layer (A) and a heat seal layer (B), wherein the base layer (A) is formed from a resin composition obtained by mixing 1-10 parts by weight of a polyethylene-based polymer (a2) into 100 parts by weight of a propylene/random copol...

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Bibliographische Detailangaben
Hauptverfasser:	MURATA, TAICHI, TOYOSHIMA, YUTAKA, YASUOKA, RYO
Format:	Patent
Sprache:	chi ; 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:	Provided are: a composite film having at least two layers, i.e., a base layer (A) and a heat seal layer (B), wherein the base layer (A) is formed from a resin composition obtained by mixing 1-10 parts by weight of a polyethylene-based polymer (a2) into 100 parts by weight of a propylene/random copolymer (a1) that has a boiling point of 140 DEG C or higher, and the heat seal layer (B) is formed from a resin composition having an ethylene/[alpha]-olefin copolymer as a main component; and a laminated film and a laminate in which the composite film is used. It is possible to provide a composite film having exceptional low-temperature heat sealing properties and anti-blocking properties, excellent hermetic sealing properties in conventional bags and at high filling speeds, and exceptional processability during lamination of a functional applied layer onto a film surface, and it is also possible to provide a laminated film and a laminate in which the composite film is used.