EASILY OPENABLE GAS BARRIER LAMINATE, AND EASILY OPENABLE GAS BARRIER PACKAGING MATERIAL AND PACKAGING BAG INCLUDING THE LAMINATE

• Main Authors: KONO SHINICHIRO, YABUKI SOICHIRO
• Format: Patent
• Language: English; Japanese
• Published: 03.10.2019
• 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

To provide an easily openable gas barrier laminate excellent in workability at production, while excellent in easy open properties, gas barrier properties and flex resistance, and also to provide a packaging material and a pillow type packaging body including the laminate.SOLUTION: An easily openable gas barrier laminate 1 at least includes: a substrate layer (A)2; a gas barrier organic adhesive layer (B)3 being organic and having gas barrier properties; a gas barrier inorganic vapor-deposited layer (C)4; and an easily openable sealant layer (D)5. The easily openable gas barrier laminate 1 has a configuration where the gas barrier inorganic vapor-deposited layer (C)4 and the gas barrier organic adhesive layer (B)3 are abutting on each other. Thickness of the substrate layer (A)2 is 5-50 μm and thickness of the gas barrier organic adhesive layer (B)3 is 0.5-6.0 μm.SELECTED DRAWING: Figure 1 【課題】生産時の作業性に優れ、易開封性とガスバリア性及び耐屈曲性に優れた易開封性ガスバリア積層体及び該積層体からなる包装材料とピロー包装体を提供する。【解決手段】少なくとも、基材層（Ａ）２と、ガスバリア性有機ガスバリア性有機接着剤層（Ｂ）３と、ガスバリア無機蒸着層（Ｃ）４と、易開封性シーラント層（Ｄ）５とを有する易開封性ガスバリア積層体１であって、ガスバリア無機蒸着層（Ｃ）４とガスバリア性有機接着剤層（Ｂ）３とが接した構成を有し、基材層（Ａ）２の厚みは、５〜５０μｍであり、ガスバリア性有機接着剤層（Ｂ）３の厚みは０．５〜６．０μｍである、易開封性ガスバリア積層体１。【選択図】図１