摘要 |
A shoe press belt has both sides coated with a resin layer and one or both layer s with side edge portions softer than the middle portion of the resin layer. The h ardness of the side edge portions may first decrease stepwise laterally outwardly from t he middle portion to a section which overlies the edge of the shoe, and then increase step wise laterally outwardly to the edge of the belt. A first stepwise reduction in hardn ess may begin laterally inward of the edge of the wet paper sheet and extend laterally o utwardly to the edge of the wet paper sheet, where a second stepwise reduction begins tha t extends laterally outwardly beyond the edge of the shoe. Laterally outwardly of the seco nd reduction, a stepwise increase in hardness extends to the edge of the belt. Alte rnatively, each side edge portion may be of a single hardness, less than the hardness of th e middle portion, and each side edge portion overlies one of the side edges of the shoe. |