PACKAGING CONTAINER WITH VISCOUS CONTENT HOUSED THEREIN

• Main Authors: AKUTSU YOSUKE, IWAMOTO SHINYA
• Format: Patent
• Language: English; Japanese
• Published: 08.02.2018
• 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 content-containing packaging container having a multilayer structure and enabling a viscous content to be quickly discharged.SOLUTION: A plastic-made packaging container with a content including a viscous water component housed therein is provided. The liquid layer of an oily liquid of 0.2-50 g/mis formed on the face contacting with the content. The container wall of the packaging container has a ground layer, a liquid diffusion-preventive layer, a middle interposition layer and an oxygen barrier layer in this order. The ground layer is composed of an olefinic resin having a density less than 1.0 g/cm, and the oily liquid penetrates into the ground layer from the liquid layer. Each of the liquid diffusion-preventive layer and the oxygen barrier layer includes 60 mass% or more of ethylene-vinyl alcohol copolymer having a density of 1.0 g/cmor more and a glass transition point of 35°C or higher. A ratio d/D is 30 to 70% when the thickness of the middle interposition layer is represented as d, and the whole thickness of the container as D.SELECTED DRAWING: Figure 1 【課題】粘稠な内容物を速やかに排出することができる内容物入り多層構造包装容器を提供する。【解決手段】粘稠性を有する水分を含む内容物が収容されているプラスチック製包装容器であって、内容物と接触する面に、０．２乃至５０ｇ／ｍ２の油性液体の液層が形成されており、前記包装容器の容器壁は、下地層、液拡散防止層、中間介在層及び酸素バリア層をこの順に有しており、前記下地層は、密度が１．０ｇ／ｃｍ３未満のオレフィン系樹脂からなり且つ該下地層には、前記液層から前記油性液体が浸透しており、前記液拡散防止層及び酸素バリア層は、何れも、密度が１．０ｇ／ｃｍ３以上で且つガラス転移点が３５℃以上のエチレン−ビニルアルコール共重合体を６０質量％以上含み、前記中間介在層の厚みをｄ１、容器の全体厚みをＤとしたとき、ｄ１／Ｄの比が３０乃至７０％であることを特徴とする。【選択図】図１