NON-ADSORPTIVE OXYGEN-ABSORBING FILM

• Main Authors: KIMURA SAORI, OGAWA NAOKI, NAKAZATO YOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 18.10.2018
• Subjects: 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

PROBLEM TO BE SOLVED: To provide a non-adsorptive oxygen-absorbing film which could be produced without causing foaming and has both a sufficient oxygen-absorbing properties and non-adsorptivity.SOLUTION: A non-adsorptive oxygen-absorbing film 10a or 10b of the present invention includes: an oxygen-absorbing layer 2; a non-adsorptive layer 6 which exists on one surface or both surfaces of the oxygen-absorbing layer; and a water vapor barrier layer 4 arranged between the oxygen-absorbing layer and the non-adsorptive layer, wherein: the oxygen-absorbing layer contains an inorganic oxygen absorbent and a thermoplastic resin; the non-adsorptive layer contains an ethylene-vinyl alcohol copolymer; and the water vapor barrier layer contains polyolefin. Water vapor permeation of the water vapor barrier layer, based on JIS K 7129:2008, is more than 0 g/m_day but equal to or less than 300 g/m_day.SELECTED DRAWING: Figure 1 【課題】発泡を生じることなく製造でき、かつ十分な酸素吸収性及び非吸着性を兼ね備えた、非吸着性酸素吸収フィルムを提供する。【解決手段】本発明の非吸着性酸素吸収フィルム１０ａ又は１０ｂは、酸素吸収層２、酸素吸収層の一方又は両方の面に存在している、非吸着性層６、及び酸素吸収層と非吸着性層との間に配置されている、水蒸気バリア層４を具備しており、酸素吸収層が、無機系酸素吸収剤及び熱可塑性樹脂を含有しており、非吸着性層が、エチレン−ビニルアルコール共重合体を含有しており、水蒸気バリア層が、ポリオレフィンを含有しており、かつ水蒸気バリア層のＪＩＳ Ｋ ７１２９：２００８に準拠する水蒸気透過度が、０ｇ／ｍ２・ｄａｙ超３００ｇ／ｍ２・ｄａｙ以下である。【選択図】図１