Varese, Italy – Comerio Ercole will feature the Hydroshot technology included in the Hydroplus device of its calender units in the upcoming Tire Technology Expo 2020.
The feature is designed to deliver significant quality improvements via micrometric control of the coupling between steel or textile cords and the rubber layers.
The coupling is performed between rolls 2 and 3 of a four-roll calender. Once the desired thickness and profile is reached, the laminating force is held constant at the optimum value to maximise adhesion between rubber and cords and avoid dangerous air micro-bubbles.
The hydraulic contrast force is calculated using a proprietary algorithm and compared with predefined values.
The tool can then take a ‘snapshot’ of coupling conditions where the force is ideal and maintain them while monitoring the gap position down to an accuracy of 1µm.