Complete Kraft Paper Mill Line for Packaging Board
The kraft paper machine is the core of any modern packaging paper mill, combining high-speed operation with exceptional sheet quality. This kraft paper machine utilizes a triple-wire forming section that allows independent control of each layer, resulting in optimal fiber distribution and bonding strength. The kraft paper machine’s press section employs a vacuum pickup roll followed by three hydraulically loaded nips, achieving high dryness without crushing the sheet.
A key advantage of this kraft paper machine is the integration of vacuum cylinders in the drying section, which enhance heat transfer and significantly reduce steam consumption. The kraft paper machine also includes a film transfer sizing machine with an air diverter, applying a precise amount of starch to both sides for improved surface strength and printability. With a user-friendly design featuring hydraulic loading, electric tensioning devices, and a rope-less tail threading system, this kraft paper machine minimizes downtime and maximizes output for mills producing kraft liner, test liner, and corrugating medium.
Main Specifications – High-Output Kraft Paper Machine
| Parameter | Value |
|---|---|
| Paper Grade | Kraft liner, test liner, T-paper |
| Operating Basis Weight | 45 – 150 g/m² |
| Trim Width | 5100 mm |
| Reel Width Maximum | 5260 mm |
| Wire Width | 5750 mm |
| Working Speed | 700 m/min |
| Design Speed | 750 m/min |
| Forming Section | Three wires, lengths 9/10/28 meters |
| Press Type | Four-roll three-nip, hydraulic loading |
| Line Pressures | 120 / 150 / 350 kN/m |
| Dryer Cylinders | 35 units of 1800 mm diameter |
| Vacuum Cylinders | 25 units of 1500 mm diameter |
| Sizing Type | Film transfer with air turn |
| Maximum Reel Diameter | 3200 mm |
| Reel Spool Diameter | 655 mm |
| Dryness After Press | 47 percent |
| Final Paper Dryness | 92 percent |
| Total Drive Power | 4609 kW |
Leizhan offers turnkey solutions featuring the kraft paper machine as the centerpiece of your paper production line. Our kraft paper machine is designed for energy efficiency, easy maintenance, and long service life. With decades of experience in pulp and paper machinery, Leizhan provides customized engineering, manufacturing, and after-sales support. For a detailed proposal on our kraft paper machine or a complete paper mill line, please email leizhanworld@gmail.com. Partner with Leizhan for innovative, cost-effective paper manufacturing solutions.
