HEAT SEAL PAPER AND PACKAGING BAG

• Main Authors: NOISHIKI YASUTOMO, WAKABAYASHI MISAKI, SHAMOTO YUTA, NAMIOKA MOKA
• Format: Patent
• Language: English; Japanese
• Published: 26.12.2023
• 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; IMPREGNATING OR COATING OF PAPER; PACKAGES; PACKAGING ELEMENTS; PACKING; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PERFORMING OPERATIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; STORING; TEXTILES; TRANSPORTING; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

To provide heat seal paper capable of obtaining a packaging bag which is difficult to be broken and can be easily opened when opening, and a packaging bag using the heat seal paper.SOLUTION: Disclosed is heat seal paper having one or more heat seal layers on at least one face of a paper substrate, wherein the heat seal paper is characterized by that the heat seal layer includes a water dispersible resin binder, a vertical and horizontal geometric mean of specific tear strength of the heat seal paper is 10 mN m2/g or over, the specific bursting strength of the heat seal paper is 3.0 kPa m2/g or over, and the heat seal peel strength when heat-sealing the heat seal layers to each other at 150°C and 0.2 MPa for 1 second is 2.0 N/15 mm or over and 10 N/15 mm or under.SELECTED DRAWING: None 【課題】破袋しにくく、かつ、開封時には容易に開封可能な包装袋が得られるヒートシール紙、および該ヒートシール紙を用いた包装袋を提供する。【解決手段】紙基材の少なくとも一方の面に１層以上のヒートシール層を有するヒートシール紙であって、前記ヒートシール層は、水分散性樹脂バインダーを含有し、前記ヒートシール紙の比引裂強さの縦横相乗平均が１０ｍＮ・ｍ２／ｇ以上であり、前記ヒートシール紙の比破裂強さが３．０ｋＰａ・ｍ２／ｇ以上であり、前記ヒートシール層同士を１５０℃、０．２ＭＰａ、１秒の条件でヒートシールした際のヒートシール剥離強度が２．０Ｎ／１５ｍｍ以上１０Ｎ／１５ｍｍ以下である、ヒートシール紙。【選択図】なし