A SUBSTRATE FOR SECURITY DOCUMENTS

摘要

The present invention provides a durable substrate for security documents such as banknotes, cheques, identification documents etc. and a method of manufacturing such a substrate. A soil resistant paper substrate is made from a stock comprising a suspension of paper fibres, said paper substrate being treated with microfibrillated cellulose. The microfibrillated cellulose bridges pore spaces formed by and in between the paper fibres at at least a surface of the substrate to provide soil resistance. The microfibrillated cellulose may be added to the stock, and/or applied prior to printing and/or after printing.