Patent ID: 6514382
Filing Date: 2003-02-04
Classification: D21F,D21H

Abstract:
A process for producing paper in bulk comprising the steps of:forming a fiber web with a paper layer forming process; transferring said fiber web having a water content of 50 to 85% by weight to a patterning zone having a perforated patterning net revolving along a suction unit; patterning said fiber web in conformity with said perforated patterning net by a suction force to said fiber web from said suction unit, said fiber web being held on said perforated patterning net while applying 5 kcal/kg or more of heat to said fiber web in a heat application zone simultaneously with or before or after the application of said suction force to said fiber web; and drying said fiber web in a drying zone to obtain a patterned bulk paper, wherein a pickup carrier belt indirectly transfers said fiber web between said patterning and said drying steps, and said perforated patterning net is not led into the drying zone.