| abstract |
Method of producing paper having a three-dimensional pattern of alternating raised and recessed portions which is given the paper in connection with impulse drying, at which the wet paper web is passed through at least one press nip ( 12 ) comprising a rotatable roll ( 13 ) which is heated and that the paper web when passing through the press nip is given a three-dimensional pattern either by means of a pattern wire ( 11 ) and/or by the fact that the heated roll ( 13 ) is provided with a three-dimensional pattern, and where the wet paper web ( 10 ) before entering said press nip ( 12 ) is given a basis weight variation in a non-random pattern. |