PACKAGING MATERIAL AND PACKAGING CONTAINER USING THE SAME

• Main Authors: YAMAMOTO HISATAKA, SHIMOMURA KYOICHI, ASAI YOSHITAKA, TOYOSHIMA AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 24.05.2018
• 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 packaging material for preventing delamination between a barrier layer and a heat seal layer.SOLUTION: In a packaging material 110 including at least a base material layer 112, a barrier layer 114 having gas barrier property and a heat seal layer 116 disposed as the innermost layer and made of a heat adhesive resin, which are laminated in order, the heat seal layer 116 includes a layer composed of cyclic olefin copolymer, and an adhesive layer 115 for bonding the barrier layer 114 and the heat seal layer 116 is composed of an ethylene methacrylic acid copolymer disposed on the barrier layer 114 side and a linear low density polyethylene disposed on the heat seal layer side.SELECTED DRAWING: Figure 1 【課題】バリア層とヒートシール層とのデラミネーションを防止する包装材料を提供する。【解決手段】少なくとも基材層１１２と、ガスバリア性を有するバリア層１１４と、最内層に配されて熱接着性樹脂から成るヒートシール層１１６とを順次積層した包装材料１１０であって、ヒートシール層１１６が環状オレフィン共重合体から成る層を含み、バリア層１１４とヒートシール層１１６を接着する接着層１１５がバリア層１１４側に配されるエチレンメタクリル酸共重合体と前記ヒートシール層側に配される直鎖状低密度ポリエチレンから成る。【選択図】図１