Energy‑Efficient Calender for Paper Industry Machinery
In modern paper industry machinery, the calender is the final step that determines printability and customer appeal. Our dual‑nip calender is engineered for flexibility and reliability, handling basis weights from 48 to 80 g/m² at speeds up to 500 m/min. The first nip has the hard roll on top and soft roll below; the second nip reverses the order, allowing independent finishing of both sheet sides. The hard roll’s unique drilling pattern and large‑diameter rotary joints ensure rapid, uniform heating with a surface temperature variation of just one degree Celsius. The controlled‑crown soft rolls use high‑grade composite covers that resist wear and provide consistent loading across the 2640 mm width.
The hydraulic system is housed in a large 304 stainless steel tank with 3‑micron filtration, using HAWE proportional valves for precise, smooth pressure control. The PID‑controlled thermal oil heater with two 90 kW units delivers stable 180°C roll temperature, and the unified HMI allows operators to manage both systems easily. Safety is paramount: upon sheet break, the rolls automatically separate, and a forced air cooling system protects the soft roll covers from thermal damage. The compact, space‑saving design reduces mill footprint, while the interchangeable roll bearing housings allow hard and soft rolls to be swapped for even wear distribution. This paper production equipment is a proven solution for cultural paper mills seeking consistent quality and low operating costs.
Key Technical Data of Our Calender
Leizhan supplies a turnkey paper production line that includes this advanced calender with integrated automation. Our machine reduces energy consumption, extends roll life, and delivers premium surface quality. We offer full engineering, installation supervision, and after‑sales support. Contact us to integrate this calender into your paper making line and achieve superior cultural paper finish. Email address: leizhanworld@gmail.com
