Patent ID: 6349637
Filing Date: 2002-02-26
Classification: D21G,Y10S

Abstract:
A magnetic calender comprising at least a pair of rotatable parallel rolls and at least an electromagnet provided with two pole pieces extending parallel to said rolls at least along a useful contact length, wherein said pole pieces are joined to a common base through a plurality of magnetic cores having an arrangement which is specularly symmetrical with respect to both a transverse mid-plane and a longitudinal mid-plane of the calendar, a coil and a control solenoid located adjacent to the relevant pole pieces being wound around each of said cores, an adjusting unit connected to said coil for controlling an intensity of a current circulating in said coil, and a control unit conected to said control solenoid for receiving and processing a magnetic flux reading carried out by said control solenoid so as to in turn control said adjusting unit for controlling the intensity of the current circulating in said coil.