The key to the design of the non-woven calender is the roll structure, material selection and roll surface treatment and technical parameter determination, followed by the functional configuration.
In terms of the roller type structure, at the same time, for the different roll heating modes which may be adopted for the pressure delay, a hollow roll suitable for steam heating and a peripheral drilling roll suitable for oil heating and water heating are respectively designed.
The two-hole heating method of the non-woven calender can meet the requirements of the process for the temperature fluctuation of the roll surface. In terms of material selection, we use alloy chilled cast iron material with good wear resistance and rigidity. The hardness of the working face of the roll reaches HS72～75.
To ensure the surface pattern of the embossing roll, it is usually necessary to clean the embossing roll, such as pickling and rust removing, using organic matter to remove oil, etc. to ensure that the surface is clean and free of dirt. Mechanical blasting is often one of the ways to improve its effectiveness.
The surface roughness of the embossing roll is increased by sand blasting, and the surface area of the bonding interface can be increased by several times or even several times, and the bonding force between the surface pattern and the embossing roll is correspondingly improved.