LAMINATION SHEET FOR LID BODY, LID BODY, FOOD PACKAGING CONTAINER, AND PACKAGED FOOD

• Main Authors: OKAMURA KENGO, YAMADA MIKINORI, TAKEUCHI REI, KOIDE SHINYA, ISHIDA SATORU
• Format: Patent
• Language: English; Japanese
• Published: 27.12.2023
• 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 lid body which can be used in a food package container, includes a food base material, and has excellent openability.SOLUTION: A lamination sheet 10 for a lid body according to an embodiment of the invention is used in a lid body of a food package container including a container body provided with an opening, and the lid body which covers the opening. The lamination sheet 10 for the lid body includes a function layer 7 having water resistance, a paper base material 5, a support layer 3, and a heat seal layer 1 in a written order. A mass of the paper base material 5 is larger than masses of any other layers included in the lamination sheet 10 for the lid body. The heat seal layer has a thickness ranging from 1 μm to 5.5 μm. A composite modulus of the heat seal layer is 190 Mpa or lower.SELECTED DRAWING: Figure 1 【課題】食品用包装容器に用いられ、紙基材を含み、開封性に優れた蓋体を提供する。【解決手段】本発明の実施形態に係る蓋体用積層シート１０は、開口が設けられている容器本体と上記開口を覆う蓋体とを備える食品用包装容器の上記蓋体に用いられる蓋体用積層シートである。蓋体用積層シート１０は、耐水性を有する機能層７と、紙基材５と、支持層３と、ヒートシール層１とをこの順序で含み、上記紙基材５の質量は、蓋体用積層シート１０に含まれる他の何れの層の質量よりも大きく、上記ヒートシール層は、厚さが１μｍ以上５．５μｍ以下の範囲内にあり、上記ヒートシール層の複合弾性率は１９０ＭＰａ以下である。【選択図】 図１