Kraft Paper Manufacturing Machine Overfeed Frame Rewinder
The overfeed frame rewinder is a vital finishing machine that transforms paper machine jumbo rolls into saleable parent rolls of exact width and density. This paper mill plant machinery adopts a top overfeed configuration, which provides excellent web stability and reduces dust generation compared to bottom feed systems. The overfeed frame rewinder’s unwind stand features a pneumatically actuated brake with circulating water cooling, ensuring consistent braking torque even during prolonged high-speed operation. Inside the overfeed frame rewinder, a precision slitter assembly holds multiple upper circular knives that engage with a long-life bottom blade roll, each knife independently adjustable for quick setup changes.
Hydraulic cylinders control the pressure between the finished roll and the support rollers, automatically adjusting nip load as the roll diameter grows to maintain uniform hardness from core to surface. The overfeed frame rewinder also includes a hydraulic paper pushing device that ejects completed rolls, minimizing operator intervention. With its heavy-duty welded frame and vibration-damping design, this overfeed frame rewinder handles high inertia loads with ease, making it ideal for corrugated and kraft mills. The AC frequency control ensures smooth starting and precise speed regulation, while the emergency stop function enhances operational safety.
Main Specifications – Overfeed Frame Rewinder
| Parameter | Value |
|---|---|
| Web Width Capacity | 2600 mm |
| Unwind Max Diameter | 2000 mm |
| Rewind Max Diameter | 1500 mm |
| Maximum Operating Speed | 600 m/min |
| Paper Grade Range | Kraft, corrugated |
| Basis Weight Range | 60 – 300 g/m² |
| Slitting Method | Upper circular knives + bottom blade roll |
| Number of Slitters | 4 sets |
| Main Drive Power | 45 kW AC variable frequency |
| Support Roller Diameter | 500 mm x 2 |
| Bottom Blade Roller Diameter | 300 mm |
| Bottom Blade Width | 92 mm |
| Hydraulic System Power | 2.2 kW |
| Brake Type | Dual pneumatic tire with water cooling |
| Core Size | 76 mm ID |
| Dynamic Balance Speed | 800 m/min |
Leizhan offers a complete range of overfeed frame rewinder systems for turnkey paper production lines and retrofit projects. Our overfeed frame rewinder combines rugged construction, precise hydraulic control, and user-friendly operation to deliver consistent roll quality and high uptime. From engineering design to installation and after-sales support, Leizhan ensures your overfeed frame rewinder performs at its best. To discuss your overfeed frame rewinder requirements or schedule a factory visit, please email leizhanworld@gmail.com.
