| 摘要 |
A processing roll adapted to engage paper or the like to heat and/or shape the same. The roll has a cylindrical side wall and defines a interior condensing chamber for steam. The interior surface of the roll is formed with longitudinal grooves which slope away from the longitudinal axis toward a central location. The steam condensates in the chamber, collects in the grooves, and flows toward a center location where the condensate is siphoned out and removed from the chamber. Improved heat transfer is achieved, and greater uniformity of heat is accomplished at the outside surface.
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