| 摘要 |
Web-drying apparatus having a plane of lower blow boxes underlying the path of travel of the web to blow dry air against the undersurface of the web to support the same in closely-spaced relation to the blow box. Upper blow boxes are disposed on the upper side of the web closely adjacent the plane of travel of the web. The upper blow boxes are disposed in pairs extending diagonally across the full width of the web and terminating at opposite ends in fan chambers which are located in spaced locations along the sides of the path of travel of the web. The blow boxes in each pair diverge from the fan chamber, one extending forwardly and one extending rearwardly in the direction of the web travel to provide an angular space therebetween which provides free access to the web path and also to enable exhaust spent drying medium therethrough. The opposite ends of the blow boxes are closed in alternation.
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