Adhesive for packaging materials, and packaging material

• Main Authors: SHIBA KENJIN, YANO TAKUMA, YOSHINO TAKAMASA
• Format: Patent
• Language: English
• Published: 04.03.2015
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; 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; CORRECTING FLUIDS; DYES; FILLING PASTES; HANDLING THIN OR FILAMENTARY MATERIAL; INKS; 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; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; STORING; TRANSPORTING; USE OF MATERIALS AS ADHESIVES; USE OF MATERIALS THEREFOR; WOODSTAINS

This adhesive for packaging materials is in the form of an aqueous dispersion which contains a polyvinyl alcohol, an aqueous medium, and an acid-modified polyolefin resin that contains a (meth)acrylic acid ester component. The content of the polyvinyl alcohol relative to 100 parts by mass of the acid-modified polyolefin resin is 0.1-10 parts by mass. A packaging material using this adhesive comprises a barrier layer, an adhesive layer that is formed of a coating film obtained from this adhesive, and a sealant layer, said layers being laminated in this order.