High-Output Dual-Station Spin Coater for Water/Oil Barrier Coating of Pulp Molded Tableware

High-Output Dual-Station Spin Coater for Water/Oil Barrier Coating of Pulp Molded Tableware

1. Composition of Production Line

This semi-automated, compact line is centered around the dual-station coater for efficient batch processing:

1. Manual/Robotic Loading Station: Operators or a robotic arm place pulp products (plates, bowls) onto the two rotating chucks.

2. Dual-Station Spin Coating Unit: The core assembly featuring two independent, high-speed rotary chucks and precision dosing systems within one rigid frame.

3. Integrated Drying Rack or Conveyor (Optional): A timed conveyor or rotating rack to transfer coated products through a connected drying/curing area.

4. Control Cabinet with HMI: Centralized control panel for operating both stations, managing recipes, and monitoring parameters.

2. Product Description

Our Dual-Station Spin Coater is engineered for high-efficiency application of internal barrier coatings on pulp molded tableware. Its two independently controlled workstations allow one operator to load/unload one station while the other is actively coating, dramatically reducing idle time and maximizing output. Utilizing precision servo-controlled spinning and dosing, it ensures a uniform, pinhole-free film of coating material (e.g., PE, PLA, PFAS-free dispersions) with exceptional material utilization and repeatability, making it ideal for medium to high-volume production runs.

3. Technical Parameters

4. Application

• Internal Barrier Coating: For pulp-molded plates, bowls, food trays, and clamshell containers.

• Coating Types: Applied for waterproof/oil-proof coatings such as Polyethylene (PE), Polylactic Acid (PLA), and other bio-based or PFAS-free aqueous dispersions.

• Industry: Used by manufacturers of disposable eco-friendly foodservice packaging and supermarket fresh food containers.

5. Customization

This dual-station spin coater is designed to be highly customizable to fit your specific production needs:

• Chuck Design & Tooling: Custom machined chucks and fixtures to securely hold your specific product shapes (plates, bowls, complex trays).

• Dosing & Spin Profiles: The rotation speed, acceleration, and dwell time profiles are fully customizable and saved as recipes for different products.

• Integration Options: Can be customized for integration with an automated loading robot or a specific drying conveyor system.

• Safety & Enclosure: Optional safety interlock enclosures with extraction vents can be added as a customization.

6. Key Features

• Dual-Station Efficiency: Eliminates waiting time, significantly boosting output per operator compared to single-station machines.

• Independent Control: Each station operates independently, allowing for running two different product recipes simultaneously if needed.

• Precision & Consistency: Servo-controlled motion ensures repeatable coating thickness and weight for every single piece.

• Material Efficiency: Spin coating offers >90% material transfer efficiency, minimizing waste and coating cost.

• User-Friendly Operation: Intuitive touchscreen interface for easy recipe calling and parameter adjustment.

7. Support and Services

• Process Consulting: Assistance with parameter setting and coating compatibility assessment.

• Installation & Training: On-site installation, calibration, and comprehensive operator training.

• After-Sales Support: 12-month warranty, lifetime technical consultation, and readily available spare parts.

8. Packing and Shipping

• Packing: The machine is fully assembled and tested, then securely fastened in a wooden export crate with waterproof and shock-absorbent lining.

• Shipping: Shipped via sea freight to major ports worldwide. All customs documentation is provided. Lead time for standard customized models is 10-12 weeks.

9. FAQ

Q1: What is the main advantage of a dual-station over two single-station machines?
A: A dual-station machine shares one control system, one frame, and often one operator, resulting in a lower total investment, smaller footprint, and higher operational efficiency due to reduced waiting time between cycles.

Q2: How uniform is the coating on deep and complex shapes like bowls?
A: For complex 3D shapes, we offer customizable multi-axis tilt or orbital spin chucks (as an option) to ensure the coating liquid reaches all internal surfaces evenly. Standard chucks are best for shallower shapes like plates and trays.

Q3: How quickly can we change over between different products?
A: Changeover is rapid. The operator simply calls a different pre-saved recipe on the HMI and changes the physical chuck fixtures. With quick-release chucks, this can be done in minutes.

Q4: Can this machine apply coatings to the external surface as well?
A: The standard configuration is for internal coating. For external coating, a different chuck design and drip-collection system would be required, which can be discussed as a customization.

Q5: Do you provide samples coated with our own products?
A: Yes. We offer a sample coating service. You can send us your pulp products and target coating material, and we will run trials and provide a process report and coated samples for your evaluation.