Method for applying a superabsorbent polymer onto a fibrous sheet material and a double-or multiply fibrous material containing superabsorbent material
A method is provided for applying a superabsorbent polymer to a fibrous sheet material. The fibrous sheet material may be a nonwoven material or a tissue paper. The method comprises: applying a crosslinkable polymeric dispersion onto the fibrous sheet material by printing technique and in a separate step applying a crosslinking agent onto the fibrous sheet material by printing technique, wherein said crosslinking agent accomplishes crosslinking of said crosslinkable polymer to form a superabsorbent material and wherein a neutralizing agent is added together with the crosslinking agent or in a separate step. The invention further refers to a tissue or nonwoven product comprising at least two plies that are bonded together, wherein a crosslinked superabsorbent material is applied in a printed pattern between the plies, said tissue or nonwoven product having a DIN54540 Water Absorption between 15 and 100 g/g.
