| 摘要 |
<p>Method of producing a paper having a three-dimensional pattern of alternating raised and recessed portions which is given the paper in connection with impulse drying. The wet paper web is passed through a press nip (12) comprising a rotatable roll (13) which is heated and is provided with a pattern of alternating raised and recessed portions intended to be pressed into the paper web against a holder-on (11, 14), which has a non-rigid surface so that the paper web is given a three-dimensional structure which has a total thickness (t3) which is greater than the thickness (t1) of the unpressed paper web.</p> |
