Sealing film, laminated film using same, packaging bag, packaging container, and method for producing sealing film

A sealing film (1) is provided with a polyester layer (11) containing, as a main component, a polyester comprising a structural unit derived from ethylene glycol, a structural unit derived from terephthalic acid, and a structural unit derived from isophthalic acid. The ratio of the structural units...

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Bibliographische Detailangaben
1. Verfasser:	YOSHINAGA MASANOBU
Format:	Patent
Sprache:	chi ; eng
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 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:	A sealing film (1) is provided with a polyester layer (11) containing, as a main component, a polyester comprising a structural unit derived from ethylene glycol, a structural unit derived from terephthalic acid, and a structural unit derived from isophthalic acid. The ratio of the structural units derived from isophthalic acid relative to the ratio of the structural units derived from terephthalic acid and the structural units derived from isophthalic acid constituting the polyester is 3.0-15 mol%, and the content of oligomers in the polyester layer (11) is less than 2.0 mass%. 一种密封膜(1)，具备包含聚酯作为主要成分的聚酯层(11)，所述聚酯由来自乙二醇的结构单元、来自对苯二甲酸的结构单元及来自间苯二甲酸的结构单元构成，所述来自间苯二甲酸的结构单元的比率相对于构成所述聚酯的所述来自对苯二甲酸的结构单元和所述来自间苯二甲酸的结构单元的比率为3.0摩尔％以上15摩尔％以下，所述聚酯层(11)中的低聚物的含有率小于2.0质量％。