| 摘要 |
Lubrication of a compacting resilient belt used in a web compacting system is facilitated by maintaining a constant depth pool of lubricating liquid between a fluid compactor bar and the inside surface of the belt on the belt approach side of the compactor bar. The compactor bar includes a liquid dam sidewall portion that is provided with liquid overflow weir openings so that the level of the surface of the pool can be automatically maintained at a predetermined height. The belt is used in conjunction with a drum to form a nip space between the outside surface of the belt and a peripheral sector of the drum, the nip space receiving the web to be compacted in the web running direction in a conventional manner, the outside surface of the belt being compressed against the drum by the compactor bar, which bears against the inside surface of the belt while the belt is driven through the nip space. The pool of lubricant is confined laterally by side plates or air jets directed inwardly towards the edges of the belt. Liquid lubricant is supplied to the pool area by a suitable supply means, such as spray nozzles, and excess lubricating liquid overflowing the weir openings is removed during operation of the apparatus. The system is particularly useful in providing lubrication between the belt and the compactor bar while minimizing the occurrence of leakage around the edges of the belt due to excess lubricant supplied to the pool area. |
