BARRIER LAMINATE

• Main Authors: NOISHIKI YASUTOMO, WAKABAYASHI MISAKI, SHAMOTO YUTA
• Format: Patent
• Language: English; Japanese
• Published: 02.03.2023
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; 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; CORRECTING FLUIDS; DYES; FILLING PASTES; HANDLING THIN OR FILAMENTARY MATERIAL; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; STORING; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide a barrier laminate having excellent gas barrier properties and an improved appearance.SOLUTION: A barrier laminate has, on at least one side of a paper substrate, a first gas barrier layer, a second gas barrier layer and a heat seal layer in this order. The second gas barrier layer contains binder resin, laminar inorganic compound A with an aspect ratio of 150 or more, and inorganic compound B with an aspect ratio of 50 or less, and with an average particle size of 1 μm or less. The heat seal layer contains water-dispersible resin.SELECTED DRAWING: Figure 1 【課題】ガスバリア性に優れ、かつ、外観が向上したバリア性積層体を提供すること。【解決手段】紙基材の少なくとも一方の面上に第１のガスバリア層、第２のガスバリア層およびヒートシール層をこの順に有するバリア性積層体であって、前記第２のガスバリア層が、バインダー樹脂と、アスペクト比１５０以上の層状無機化合物Ａと、アスペクト比が５０以下であり、かつ、平均粒径が１μｍ以下である無機化合物Ｂとを含有し、前記ヒートシール層が、水分散性樹脂を含有する、バリア性積層体。【選択図】図１