| 摘要 |
A shoe press belt for a papermaking machine is composed of heat-resistant base and resin layers, the resin layer containing a filler for modifying its thermal conductivity. The resin layers do not soften at high temperatures, and consequently the grooves formed in the belt to promote dewatering do not deform during the pressing operation. Improved belt performance has been observed both with fillers which decrease thermal conductivity and with fillers which increase thermal conductivity. In one case external heat is prevented from entering the belt, and in the other case, the resin layers of the belt are not adversely affected by external heat even when they permit entry of heat. The resin layer may be composed of sublayers, some having filler, with the outer layer preferably free of filler so that the surface characteristics of the belt are unaffected. The sublayers of resin may have fillers with different thermal conductivities, proceeding progressively from low to high or from high to low, for improved control over belt temperature. <IMAGE> |
