GAS BARRIER LAMINATE, PACKAGING BAG, AND PACKAGED PRODUCT

• Main Authors: KAMINAGA JUNICHI, KOJIMA YUMIKO, ISHII RIKA, KOSHIYAMA YOSHIKI, WAKABAYASHI HIROYUKI
• Format: Patent
• Language: English; Japanese
• Published: 11.01.2024
• 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 gas barrier laminate that retains sufficient gas barrier properties even after bent, and also provide a packaging bag and a packaged product.SOLUTION: A gas barrier laminate includes a paper substrate, an anchor coat layer, and a barrier layer in this order. The anchor coat layer includes a resin including a crosslinked polyolefin where a polyolefin with a carboxy group is crosslinked with a crosslinker including a plurality of reactive groups reactable with carboxy groups in one molecule.SELECTED DRAWING: Figure 1 【課題】折り曲げられた後であっても十分なガスバリア性を有するガスバリア積層体、包装袋及び包装製品を提供すること。【解決手段】紙基材と、アンカーコート層と、バリア層とをこの順に備え、アンカーコート層が、カルボキシ基を有するポリオレフィンを、カルボキシ基と反応する反応性基を１分子中に複数有する架橋剤によって架橋させてなる架橋ポリオレフィンを含む樹脂を含有する、ガスバリア積層体。【選択図】図１