Brief description

The calendering machine is a kind of calendering and glazing process which is used to improve the gloss of paper surface in papermaking machinery production line. After coating the surface of the printed matter, the glazing layer is dry. If you need to improve the smoothness and glossiness of the glazing coating again, you can press the glazing machine.

Detailed introduction

The calendering machine is a kind of calendering and glazing process which is used to improve the gloss of paper surface in papermaking machinery production line. After coating the surface of the printed matter, the glazing layer is dry. If you need to improve the smoothness and gloss of the glazing coating again, you can press the glazing machine. Generally, the gloss of the glazing is about 65-85%, and the glossiness of more than 90-95% can be achieved after calendering.

Structure characteristics of calender

The calendering machine is mainly composed of printing matter conveying mechanism, mechanical transmission, electrical control system and other parts, including printing matter conveying platform, manual high pressure oil pump, hot pressing roller, pressure roller, speed regulating drive motor, calendering steel belt, cooling box, observation door, cooling water tank, ventilation circulation system, transmission roller, printing matter collection platform. By adjusting the speed of the hydraulic valve inside the nylon roller, the middle and high of the nylon roller can be automatically adjusted to achieve uniform line pressure in the whole pressure area when different pressures are applied to the roller surface. After calendering equipment rolling product thickness, G gloss uniformity is much better than ordinary calendering. At the same time, the equipment can withstand the high temperature and high linear speed of the steel rod when running.

Operation process of calender

The working mode of the calender is usually continuous rolling type. The printed matter is conveyed from the feeding table to the pressing 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 pressing belt and is pressed. The calendered glazing layer gradually cools to form a bright surface layer. The pressure light belt is a special stainless steel ring steel belt. The hot pressing roller is equipped with a plurality of far infrared heating sources to provide the heat required in the calendering. The pressure of the pressure roller is mostly regulated by electric hydraulic pressure system, which can accurately meet the requirements of pressure in the pressuring process. The press speed can be controlled by speed regulating drive motor or slip motor.