DEVICE FOR SURFACE TREATMENT OF MATERIAL

摘要

Means for the surface treatment of material moved between a plurality of rollers exerting a pressure onto each other under the action of magnetic forces. One form has at least two rollers having peripheries of magnetizable material and has first and second magnet portions associated with each for pulling or attracting the rollers into peripheral engagement with at least one calender or counterroller which may be of any desired peripheral material, with the resultant of the component magnetic attractive force between each of the rollers of magnetizable material and the respectively related magnet bodies lying in a plane passing through the axes of the rollers of magnetizable material and said counterroller. Another form has at least three rollers with magnetizable peripheral material and between which rollers there are magnet bodies arranged to exert magnetic attractive forces on the rollers to engage with at least one counter roller disposed inwardly thereof and providing a magnetic field closed by the said rollers of magnetizable material.