AQUEOUS HEAT SEALING AGENT, PAPER BASE MATERIAL FOR PAPER CONTAINERS, PAPER CONTAINER AND METHOD FOR PRODUCING PAPER CONTAINER

• Main Authors: KIKUCHI Hiroshi, TANAKA Katunori, ENOMOTO Hajime, OCHI Mamoru
• Format: Patent
• Language: English; French; Japanese
• Published: 05.08.2021
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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; DYES; 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; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PERFORMING OPERATIONS; POLISHES; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS AS ADHESIVES

The present invention is an aqueous heat sealing agent which is characterized by containing an aqueous solvent, an olefin-α, β-unsaturated carboxylic acid copolymer and a wax. An aqueous heat sealing agent according to the present invention is capable of achieving a good balance between a heat seal function, which is desired for an alternative for a polyethylene film that is used in a paper container such as a paper cup, and waterproof properties and strength, which are desired for a coating agent for the cup inner surface, while being able to be recycled without segregation at the time of paper recycling. The present invention is able to provide a paper container which uses this aqueous heat sealing agent. La présente invention concerne un agent de thermoscellage aqueux qui est caractérisé en ce qu'il contient un solvant aqueux, un copolymère d'oléfine acide carboxylique α, β insaturé et une cire. Un agent de thermoscellage aqueux, selon la présente invention, est apte à obtenir un bon équilibre entre une fonction de thermoscellage, qui est souhaitée comme alternative à un film de polyéthylène qui est utilisé dans un récipient en papier tel qu'un gobelet en papier, et des propriétés imperméables et une certaine résistance, qui sont souhaitées pour un agent de revêtement de la surface interne du gobelet, tout en pouvant être recyclé sans tri lors du recyclage du papier. La présente invention peut fournir un récipient en papier qui met en œuvre cet agent de thermoscellage aqueux. 本発明は、水性溶剤と、オレフィン－α，β不飽和カルボン酸共重合体とワックスとを含有することを特徴とする水性ヒートシール剤によるものである。本発明の水性ヒートシール剤は、紙カップ等の紙容器に使用されるポリエチレンフィルムの代替として所望されるヒートシール機能とカップ内面コート剤に所望される防水性や強度の両立、及び紙リサイクル時に分別せずにリサイクル可能であり、本発明の水性ヒートシール剤を用いた紙容器を提供可能である。