Patent ID: 9322135
Filing Date: 2016-04-26
CPC Classification: D21F,D21G,D21H

Claim Text:
1. A method for producing a hemicelluloses containing fiber web, comprising the steps of: forming a paper web in a forming section using a wet process; drying the fiber web in a dryer section wherein the fiber web leaves the dryer section with the fiber web in a plastic regime of hemicelluloses; cooling the fiber web in a cooling module by applying liquid to the fiber web with a first cross directional row of liquid nozzles at a first location and drawing air from the fiber web with at least one first cross directional suction opening near the first row of liquid nozzles, followed by blowing gas on to the liquid on the fiber web and evaporating the liquid at a second location spaced from the first location to cool and dry the fiber web, followed by repeating the foregoing steps at least once by applying liquid to the fiber web with a second cross directional row of liquid nozzles at a third location and drawing air from the fiber web with at least one second cross direction opening near the second row of liquid nozzles, followed by blowing gas on to the liquid on the fiber web and evaporating the liquid at a fourth location spaced from the first location to cool and dry the fiber web until the fiber web is cooled to below the plastic regime of hemicelluloses into an elastic regime of the hemicelluloses; and after cooling the fiber web, calendering the fiber web in a hard nip calender with a thermo roll, which has a surface temperature of at least 100° C., such that an outer portion of the fiber web is heated to the plastic regime of hemicelluloses, and an inner portion of the fiber web remains in the elastic regime of the hemicelluloses.