Fully-Automated Spin Coating Line for Molded Pulp Product Interiors | For Efficient Water/Oil-Resistant Coating on Food Containers & Trays

Fully-Automated Spin Coating Line for Molded Pulp Product Interiors | For Efficient Water/Oil-Resistant Coating on Food Containers & Trays

1. Composition of Production Line
This fully-automated spin coating line comprises several integrated stations: an automatic feeding & orientation unit, an infrared/thermal pre-conditioning zone (optional for moisture control), the core multi-station spin coating turntable, a transfer conveyor, a vertical drying/curing tunnel (IR or UV), and a stacking/unloading unit. PLC controls synchronize the entire process.

2. Product Description
This automated spin coating production line is specifically engineered for applying uniform, high-performance functional coatings (e.g., water-resistant, oil-resistant, barrier coatings) to the internal surfaces of molded pulp products like food containers, trays, and packaging. It ensures consistent film thickness, maximizes material utilization, and achieves high throughput for mass production, significantly enhancing product performance and quality consistency.

3. Technical Parameters

4. Application
Designed for applying functional interior coatings to a wide range of molded pulp products: Food service ware (plates, bowls, clamshells), Egg trays and cartons, Fruit and electronic packaging trays, Any pulp product requiring internal moisture or grease resistance.

5. Customization
We offer highly customizable solutions to match your specific products and output goals. Key customizable elements include: the number and layout of spin stations, fixture design for your unique mold shapes, coating application system (for specific viscosity), integration with specific drying/curing technologies, and line speed and automation level.

6. Features & Advantages

• Uniform Interior Coating: Ensures consistent, pinhole-free film coverage on complex 3D interior surfaces, crucial for barrier performance.

• High Efficiency & Low Waste: Automated, enclosed process minimizes coating material waste (overspray) compared to manual spraying, reducing VOC and cost.

• Exceptional Consistency: Eliminates human variability, ensuring every product meets the same high-quality standard.

• Seamless Integration: Designed to connect with upstream molding and downstream packaging lines for a continuous workflow.

• Data-Driven Process: Recipe control and data logging enable precise process repeatability and traceability.

7. Support and Services

• On-site installation supervision, commissioning, and comprehensive operator training.

• One-year warranty on the entire system, with extended support plans available.

• Lifetime access to technical documentation and remote support.

• Partnership for providing process optimization and spare parts.

8. Packing and Shipping
The line is modularized. Key modules are disassembled and securely packed in heavy-duty, weatherproof wooden crates. All crates are clearly marked for easy identification and assembly. Shipping terms (FOB, CIF, etc.) are negotiable. Lead time is typically 14-16 weeks after final design confirmation.

9. FAQ

• Q: Can this line handle different shapes and sizes of pulp products in the same batch?

  • A: For optimal efficiency, it's designed for running batches of the same product. Quick-change customizable fixture systems are available to reduce changeover time between different products.

• Q: What types of coatings are compatible?

  • A: It is compatible with most water-based or solvent-based barrier coatings. The application and drying modules can be customized to suit the specific rheology and curing requirements of your coating.

• Q: How is coating thickness controlled?

  • A: Thickness is primarily controlled by the precise combination of dispensed volume, spin speed, and spin time. These parameters are digitally set and repeatable within each recipe on the PLC.