| 摘要 |
<p>A sizing applicator with two pairs of rollers arranged in sequence with one another along the transport path of a yarn sheet can be converted, without changing the position of the pairs of rollers, between an operating mode as a pad-type sizing applicator and a squeezing-type sizing applicator. Each pair of rollers has a defined gap at a common tangent therebetween and each pair of rollers has one roller disposed at a lower elevation than the other roller of the pair. The two roller pairs are relatively arranged such that their respective common tangents intersect beneath the roller pairs approximately midway between the roller pairs. The lower roller of each roller pair is disposed partially in a trough for containing the sizing to be applied to the yarn sheet, and the upper rollers of the two pair of rollers are arranged relative to one another such that the yarn sheet can be passed in a first path of travel between the two pairs of rollers in peripheral contact with each upper roller of each of the roller pairs over a limited circumferential extent and in another path of travel moving downwardly through the gap between the first pair of rollers and then upwardly through the gap of the second pair of rollers.</p> |
