Inkjet ink receptive coating comprising esterified or etherified starch and laponite

• Main Authors: Mielonen, Katriina, Backfolk, Kaj, Ovaska, Sami
• Format: Patent
• Language: English
• Published: 26.07.2022
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; IMPREGNATING OR COATING OF PAPER; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; SPRAYING OR ATOMISING IN GENERAL; STAMPS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; TYPEWRITERS; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS THEREFOR; WOODSTAINS

A method of manufacturing a paper or paperboard with improved printing properties, which method comprises the steps of, providing a paper or paperboard substrate, comprising cellulosic fibres, providing a coating composition comprising a mixture of an esterified or etherified starch and a inorganic mineral; and coating at least one surface of said substrate with at least one layer of said coating composition.