Calender is a device used to improve the gloss of paper.
The calender is mainly composed of printed matter conveying mechanism, mechanical transmission, electrical control system and other parts, including printed matter conveying table, manual high-pressure oil pump, hot pressing roller, pressing roller, speed regulating drive motor, calendering steel belt, cooling box, Observation door, cooling water tank, ventilation circulation system, transfer rollers, printed matter collecting table.
The working method of the calender is usually continuous rolling. The printed matter is transported from the paper feeding table to the calendering belt between the hot pressing roller and the pressing roller. Under the action of temperature and pressure, the coating is attached to the surface of the calendering belt and calendered. After calendering, the glazing layer gradually cools to form a bright surface layer. The calendering belt is a specially treated stainless steel endless steel belt. There are multiple groups of far-infrared heating sources installed inside the hot pressing roller to provide the heat required for calendering. The pressure of the pressing roller mostly adopts an electro-hydraulic pressure regulating system, which can accurately meet the pressure requirements in calendering. The speed of calendering can be controlled by a speed-adjustable drive motor or a slip motor.
