The Making of a Heating and Cooling Embossing Machine by Way of Trial

Abstract

In the manufacturing process of man-made leather, the surface of man-made leather is embossed as well as natural and synthetic leather. It has been experimentally ascertained that in this process the surface is better embossed by using the heating and cooling embossing method than by the former method. To put this new method to practical use, a heating and cooling embossig machine fitted with a embossing roll (600mm in diameter) was made on an experimental basis.
The surface embossed was examined, and some problems of heat conduction were investigated. In order to heat and cool with the same roll, an induction heating apparatus was used for heating, and water vaporization for cooling inside the roll. By running this test machine, the characteristic curve of the core was obtained.
Furthermore, to investigate the cooling characteristics of the roll, a heat conduction model was constructed by solving the differential equation for heat conduction by finite element method.