Coated substrate and method for the preparation thereof

• Main Authors: LINDGREN, ERIK, ANDERSSON, KJELL RUNE
• Format: Patent
• Language: English
• Published: 12.01.2012
• Subjects: COLOUR PRINTING; IMPREGNATING OR COATING OF PAPER; LINING MACHINES; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PERFORMING OPERATIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; STAMPS; TEXTILES; TRANSPORTING; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; TYPEWRITERS

A method for the preparation of a coated substrate is provided, comprising the steps of providing a substrate; applying on at least one side of said substrate a first coating layer of a first aqueous composition comprising porous anionic pigment particles having a BET surface area of above 40 m2/g and a binder and applying on said first coating layer, a second coating layer of a second, aqueous composition comprising cationic colloidal silica or silicate based particles and polyalkylene glycol. It has been found that a substrate coated with the combination of the first coating layer and the second coating layer provides a suitable substrate for high-quality and fast-drying inkjet printouts.