POLYESTER MULTILAYER FILM

PROBLEM TO BE SOLVED: To provide a multilayer film that is an environmentally friendly film using biomass-derived raw materials, where the multilayer film has excellent mechanical physical properties while having high gas barrier properties, and is suitable for soft packaging.SOLUTION: A multilayer...

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Bibliographische Detailangaben
1. Verfasser:	HITOMI TATSUYA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR 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 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 MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a multilayer film that is an environmentally friendly film using biomass-derived raw materials, where the multilayer film has excellent mechanical physical properties while having high gas barrier properties, and is suitable for soft packaging.SOLUTION: A multilayer film satisfies the following (1) and (2): (1) at least one layer is a polyester resin A layer composed of a polyester resin A having a 2,5-furandicarboxylic acid unit and a 1,4-butanediol unit as main constitutional units; and (2) at least another layer is a polyester resin B layer composed of a polyester resin B having a terephthalic acid unit and a 1,4-butanediol unit as main constitutional units.SELECTED DRAWING: None 【課題】バイオマス由来の原料を用いた環境配慮型のフィルムであって、高いガスバリア性を有しつつ、機械的物性に優れた、軟包装用途により適した多層フィルムを提供することを目的とする。【解決手段】以下（１）及び（２）を満たすことを特徴とする多層フィルム。（１）少なくとも１層は、２，５−フランジカルボン酸単位と、１，４−ブタンジオール単位を主たる構成単位とするポリエステル樹脂Ａからなるポリエステル樹脂Ａ層（２）少なくとももう１層は、テレフタル酸単位と、１，４−ブタンジオール単位を主たる構成単位とするポリエステル樹脂Ｂからなるポリエステル樹脂Ｂ層【選択図】なし