LAMINATE AND PACKAGING BAG

• Main Authors: KONO SHINICHIRO, ISHIKAWA SHUN, TAKASUGI YUYA, NAKADA KIYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 13.10.2023
• 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 a laminate that is excellent in recycling property and can excellently improve tearability due to laser irradiation.SOLUTION: A laminate comprises at least a stretched base material and a sealant layer, wherein the stretched base material contains polyethylene as a main component, the sealant layer comprises at least a first layer and a second layer, and the first layer contains an ethylene/α-olefin copolymer as a main component, the first layer has a melting point of 112°C. or less, the second layer contains polyethylene as a main component, and the melting point of the second layer is 114°C or higher, one surface layer of the laminate is the first layer, and the laminate has further an exothermic layer containing an exothermic substance that absorbs laser light to generate heat between the stretched base material and the sealant layer.SELECTED DRAWING: None 【課題】リサイクル性に優れ、レーザー照射により引裂き性を良好に向上できる積層体を提供する。【解決手段】延伸基材とシーラント層とを少なくとも備える積層体であって、延伸基材は、ポリエチレンを主成分として含有し、シーラント層は、第１の層と第２の層とを少なくとも備え、第１の層が、エチレン／α－オレフィン共重合体を主成分として含有し、第１の層の融点が、１１２℃以下であり、第２の層が、ポリエチレンを主成分として含有し、第２の層の融点が、１１４℃以上であり、積層体の一方の表面層が、第１の層であり、積層体は、延伸基材とシーラント層との間に、レーザーを吸収して発熱する発熱物質を含有する発熱層をさらに備える、積層体。【選択図】なし