Patent ID: 9145643
Filing Date: 2015-09-29
Classification: D21F

Abstract:
1. A papermaking system comprising a press part for squeezing water from a wet paper web, wherein the press part is configured to pass the wet paper web in a closed draw by using a wet paper web transfer belt, in at least one part thereof the wet paper web transfer belt comprising: a surface to contact the wet paper web and to carry the wet paper web, said surface being made of a resin layer, wherein the surface includes a region to carry the wet paper web, and wherein relations of equations (1) and (2) are fulfilled, where where: Ra=arithmetic average surface roughness (μm) of the surface in the region to carry the wet paper web, X=basis weight (g/m Y =swelling rate (%) of a resin constituting the resin layer with water in the range of 1.5-15.0%, B=4.441, C=9.132, D=−4.247, E=0.6580, F=2.103, respectively.