4800mm Double Fourdrinier Board Paper Machine
The double fourdrinier board paper machine is designed for high-output production of sack paper and corrugated medium with excellent strength properties. This paper manufacturing machine utilizes two independent wire sections that enable separate furnish preparation for the top and bottom layers, optimizing fiber utilization. The press section of the double fourdrinier board paper machine employs a vacuum suction transfer roll followed by three hydraulically loaded nips with large blind-drilled rolls, achieving superior water removal without fiber crushing.
A key advantage of this double fourdrinier board paper machine is the integration of a film transfer sizing machine and an inclined size press, applying starch and surface agents evenly for enhanced ring crush and burst strength. The dryer section features direct-connected cylinders for reduced power loss and a rope-less tail threading system that minimizes paper breaks. A two-roll calender at the dry end ensures smoothness and uniform caliper. With hydraulic loading, electric tensioning devices, and centralized lubrication, this double fourdrinier board paper machine offers easy operation and long service life for mills producing premium packaging grades.
Main Specifications – Double Fourdrinier Board Paper Machine
| Parameter | Value |
|---|---|
| Product Types | Sack paper, corrugating medium, test liner |
| Basis Weight Range | 70 – 140 g/m² |
| Net Trim Width | 4800 mm |
| Wire Width | 5300 mm |
| Operating Speed | 350 – 400 m/min |
| Design Speed | 450 m/min |
| Top Wire Length | 8 m |
| Bottom Wire Length | 23 m |
| Press Nip Configuration | Three nips (120/150/350 N/mm design) |
| Press Roll Diameters | Φ1350 / Φ1250 / Φ1500 / Φ1500 mm |
| Dryer Cylinders | 35 units of 1800 mm |
| Vacuum Cylinders | 3 units of 1500 mm |
| Sizing Type | Film transfer with inclined size press |
| Calender Type | Two-roll |
| Reel Diameter Max | 3000 mm |
| Dryness After Press | 50 percent |
| Final Dryness | 92 percent |
| Total Drive Power | 1915 kW |
Leizhan offers turnkey double fourdrinier board paper machine solutions for the global packaging industry. Our double fourdrinier board paper machine combines proven forming technology, energy-saving press and dryer sections, and intelligent automation to deliver consistent quality at low operating cost. From engineering design to commissioning, Leizhan supports every step of your double fourdrinier board paper machine project. For a detailed proposal and technical consultation, please email leizhanworld@gmail.com.
