Patent ID: 9157185
Filing Date: 2015-10-13
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 in at least one part thereof by using a wet paper web transfer belt, the wet paper web transfer belt including a wet paper web contacting surface for carrying the wet paper web, said wet paper web contacting surface being made of a water-impermeable resin layer, wherein the wet paper web contacting surface includes, in a width direction, sheet edge regions for carrying edge parts of the wet paper web and a center region for carrying a center vicinity of the wet paper web, wherein an arithmetic average roughness Ra wherein relations of equations (1) and (2) are fulfilled, where where: X=basis weight (g/m Y=swelling rate (%) of a resin constituting the resin layer with water, B=4.441, C=9.132, D=−4.247, E=0.6580, and F=3.1027, respectively.