PROPYLENE POLYMER-BASED COMPOSITE FILM, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF

Disclosed are a propylene polymer-based composite film, a preparation method therefor, and an application thereof. The composite film comprises at least two different layers: layer a and layer b, wherein layer a and layer b each comprise at least one propylene polymer, and at least one of layer a an...

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Bibliographische Detailangaben
Hauptverfasser:	BAI, Yiqing, XU, Meng, GAO, Dali, ZHANG, Qi, CHOU, Baige, LIU, Jianye, SHAO, Jingbo, LYU, Yun, REN, Yueming, DONG, Mu, QUAN, Hui, ZHANG, Shijun, XU, Kai
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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 SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	Disclosed are a propylene polymer-based composite film, a preparation method therefor, and an application thereof. The composite film comprises at least two different layers: layer a and layer b, wherein layer a and layer b each comprise at least one propylene polymer, and at least one of layer a and layer b comprises a propylene impact copolymer, wherein the propylene impact copolymer comprises elastic moieties that form dispersed strip-like rubber phases in the composite film, the rubber phases are arranged parallel to each other, and the average dimension of transverse axes of the rubber phases is 20-200 nm and the average of aspect ratios is 5-20. The composite film has both excellent impact resistance and optical properties, and even has good tensile properties and/or good heat-sealing strength at lower heat-sealing temperatures, and even has good uniformity. The composite film is particularly useful in the field of packaging materials, especially in battery packaging materials, electronic product packaging materials, or food packaging materials.