Bonded fibrous sheet material

摘要

The present invention refers to a method of producing a porous bonded fibrous sheet material comprising: (i) treating a porous fibrous substrate which is comprised of cellulosic fibres and which has a moisture content of less than 10% by weight with a gum and a cross-linkable wet strength resin both dissolved in water; (ii) removing excess water; and (iii) effecting cross-linking of the resin.