+86 15539197017
3800mm coated white board paper machine with three-ply Fourdrinier forming, shoe press and two-stage online coating. 150,000 T/Y capacity, proven project since 2021.
Our 3800mm coated white board paper machine is designed for industrial production of high-quality coated packaging paperboard. The line features three-ply Fourdrinier forming, a shoe press, two-stage in-machine coating, and automated DCS/QCS control.
Commissioned in 2021, this project demonstrates a proven production configuration for coated white board used in pharmaceutical, food, footwear, clothing, gift, and consumer product packaging.
With a design capacity of approximately 150,000 tons per year, the production line combines recycled fiber utilization, multilayer forming technology, and advanced surface coating.
| Parameter | Specification |
|---|---|
| Machine Type | Coated White Board Paper Machine |
| Trimmed Paper Width | 3800 mm |
| Design Speed | 400 m/min |
| Operating Speed | 260–330 m/min |
| Basis Weight | 250–450 GSM |
| Annual Capacity | 150,000 tons |
| Forming System | Three-Ply Fourdrinier |
| Headboxes | Three Air-Cushion Headboxes |
| Press Section | Vacuum Press + Shoe Press |
| Drying Cylinders | 42 Units |
| Dryer Diameter | 1800 mm |
| Coating System | Two-Stage In-Machine Coating |
| First Coating | Air-Knife, 14–20 g/m² |
| Second Coating | Blade Coating, 10–16 g/m² |
| Calender | Two-Roll Soft Calender |
| Control System | DCS |
| Quality Control | QCS |
| Commissioning Year | 2021 |
Actual production output depends on basis weight, raw materials, operating efficiency, and process conditions.
The machine incorporates three independent air-cushion headboxes for producing a multilayer paperboard structure.
Each layer can be controlled separately to achieve the required surface quality, thickness, stiffness, and strength.
Top Layer: Recycled fiber blended with a small proportion of bleached wood pulp to improve surface brightness, smoothness, and printability.
Middle Layer: Recycled wastepaper pulp, providing bulk, stiffness, and structural support.
Bottom Layer: Recycled wastepaper pulp, contributing to board strength and structural stability.
This configuration helps optimize raw material costs while maintaining the surface properties required for coated packaging board.
The press section combines a four-roll vacuum press arrangement with shoe press technology.
The shoe press increases mechanical water removal before the drying section, helping reduce the thermal load on the dryers.
Main benefits include:
Improved sheet dryness after pressing
Reduced drying energy requirements
Better sheet consolidation
Stable paperboard production
Improved operating efficiency
The press section also includes rubber-covered rolls and high-pressure cleaning equipment.
The drying section includes 42 cast-iron drying cylinders, each with a diameter of 1800 mm.
The system features sectional steam temperature control, a semi-enclosed dryer hood, and hot-air circulation.
Controlled drying helps maintain consistent moisture, thickness, and physical properties throughout production.
One of the main advantages of this production line is its integrated two-stage coating system.
First Stage – Air-Knife Pre-Coating
Coating weight: 14–20 g/m².
The air-knife coating system helps level the paperboard surface, fill minor irregularities, and prepare the sheet for final coating.
Second Stage – Blade Coating
Coating weight: 10–16 g/m².
The blade coating system provides a smoother surface suitable for high-quality color printing and packaging applications.
A dedicated hot-air drying system follows the coating process to support proper coating drying and reduce surface defects.
The integrated arrangement eliminates the need for a separate offline coating line for this process configuration.
The machine includes a two-roll soft calender for improving the finished paperboard surface.
Calendering helps achieve:
Better surface smoothness
More uniform thickness
Improved appearance
Enhanced printing characteristics
These properties are important for pharmaceutical cartons, food packaging, gift boxes, and other printed packaging products.
The project incorporates a wastepaper stock preparation system, including pulping, cleaning, screening, thickening, and fiber preparation.
Recycled wastepaper is the primary raw material.
The middle and bottom layers use recycled fiber, while the top layer incorporates a small proportion of bleached wood pulp to improve surface quality.
This approach supports efficient fiber utilization and helps control raw material costs.
Distributed Control System (DCS)
The DCS supports centralized monitoring and control of forming, pressing, drying, coating, calendering, reeling, and auxiliary equipment.
It helps operators manage production parameters, machine speeds, operating conditions, and process data.
Quality Control System (QCS)
The QCS provides online monitoring of important paperboard properties, including:
Basis weight
Moisture content
Thickness
Cross-machine profiles
These systems help maintain consistent product quality and reduce production variations.
The finished coated paperboard is suitable for manufacturing various types of printed folding cartons and packaging products.
Typical applications include:
Pharmaceutical Packaging: Medicine cartons requiring good printability, surface uniformity, and consistent thickness.
Food Packaging: Printed folding cartons for suitable food-packaging applications, subject to applicable material and food-contact requirements.
Clothing and Footwear Packaging: Boxes requiring stiffness, attractive appearance, and reliable printing performance.
Gift and Consumer Packaging: High-quality printed cartons for cosmetics, gifts, and general consumer products.
This 3800mm coated white board production line was commissioned in 2021.
Its industrial operation provides a practical reference for customers planning a similar paperboard manufacturing project.
The configuration demonstrates the integration of three-ply forming, recycled fiber preparation, shoe pressing, online coating, and automated quality control.
We can discuss comparable equipment configurations according to customers' required production capacity, paperboard grades, and investment plans.
We provide engineering support for paper mill projects.
Depending on the agreed project scope, two experienced engineers can be dispatched to the customer's factory to assist with:
Mechanical installation supervision
Equipment alignment and adjustment
Commissioning and trial production
Operating parameter optimization
Operator and maintenance training
Technical troubleshooting
After-sales services may include remote technical consultation, spare parts supply, maintenance recommendations, and equipment upgrade assistance.
A coated white board production project requires careful evaluation of raw material availability, energy costs, water supply, equipment configuration, production efficiency, and local market demand.
The use of recycled fiber, multilayer forming, and integrated coating may contribute to competitive manufacturing costs.
However, actual investment returns depend on project-specific conditions. No fixed payback period or profitability is guaranteed.
Q1: What paper grades can this machine produce?
It is designed primarily for coated white packaging board in the 250–450 GSM range.
Q2: What is the production capacity?
The design capacity is approximately 150,000 tons per year.
Q3: What is the operating speed?
The design speed is 400 m/min, with a reported stable operating range of 260–330 m/min.
Q4: Does the machine use recycled wastepaper?
Yes. Recycled fiber is the main raw material, with a small proportion of bleached pulp added to the top layer.
Q5: Is coating performed online?
Yes. The machine features two-stage in-machine coating using air-knife and blade coating systems.
Q6: Can you provide a similar production line?
We can discuss a comparable configuration based on the customer's paperboard specifications, production capacity, and project requirements.
Are you planning to establish or upgrade a coated white board paper mill?
Contact us for technical consultation, equipment configuration, production capacity planning, and a commercial proposal.
Please provide your target paperboard grades, basis weight range, daily capacity, raw materials, and destination country.
WhatsApp: +86 155 3919 7017
Email: admin@paper-machinery.cn
Website: www.paper-machinery.cn
Contact us to discuss your coated paperboard production project.
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