Study on Surface Smoothing of Magnetic Tape with Calendering

摘要

With the evolution of magnetic tape to the Giga-byte level,smoother surface is required than before. The surface of the magnetictape is smoothed in calendering process. It is necessary to estimatethe surface roughness in the operation conditions of calender. Thispaper presents the analyzing method of the surface smoothingconsidering with the real contact area and the visco- elasticity ofthe magnetic layer at the temperature of calender roll. Thecalculated surface roughness is almost equal to experimental.However, in the case of soft calendering, calculated surfaceroughness is smaller than experimental. This is though to be due tothe visco-elastic deformation of the magnetic layer at the realtemperature different from that of calender roll.