Precision 6-Position Rotary Coating System for Molded Pulp Food Packaging - Uniform Film Thickness Control
System Overview
This precision rotary coating system serves as a central module in quality-focused coating lines, engineered for applications where coating uniformity and exact film thickness are critical for high-barrier requirements.
System Composition
The complete production line includes a precision-machined 6-position indexing turntable, individual product mandrels/spindles, digitally controlled spray application units, enclosed process chamber for environmental control, high-efficiency exhaust system, and sophisticated control system with real-time monitoring capabilities.
Technical Specifications
| Parameter |
Specification |
Customization Available |
| Station Configuration |
6 Independent Servo Spindles |
Yes, motion profiles are customizable |
| Positioning Accuracy |
±0.1mm |
- |
| Spindle Speed Range |
100 - 5000 RPM |
Programmable per station |
| Coating Thickness Tolerance |
±2.5 microns (within batch) |
- |
| Spray Control |
Digital Flow Meter & Solenoid Valves |
Yes |
| Process Chamber |
Enclosed with adjustable temperature |
Optional feature |
| Control System |
Advanced PLC with data logging interface |
Yes |
| Air Supply |
Clean, Dry Air @ 6-8 bar, >1000 L/min |
Specification advised |
Applications
Ideal for high-end molded pulp food packaging that demands strict barrier properties, including microwaveable trays, liquid-holding containers, and premium sustainable packaging solutions.
Customization Options
The system's core strength lies in its customizability. We can engineer mandrel designs for specific product geometries, integrate vision inspection systems, and create complex spin profiles to match your coating fluid dynamics requirements.
Key Features
- Ultra-Uniform Coating: Independent servo spindles and precise spray timing guarantee consistent results
- Complex Shape Mastery: Engineered for complete coverage on deep-draw and multi-angled products
- Process Repeatability: Digital control and recipe management ensure batch-to-batch consistency
- Data Logging: Optional SPC data output for quality tracking and traceability
Support & Services
We provide comprehensive process development assistance, on-site calibration services, and annual maintenance contracts. Technical documentation includes detailed PLC code and mechanical drawings.
Packing & Shipping
Critical components including spindles and controls are packed in anti-static and moisture-proof materials. The frame is steel-strapped and crated for secure transport. Detailed packing lists are provided for easy customs clearance.
Frequently Asked Questions
How do you handle coating inside narrow rimmed containers?
We customize the spray nozzle angle and utilize centrifugal force from precise spinning to draw coating into rims, ensuring complete coverage.
Can thickness be measured in-line?
Yes, we can integrate non-contact thickness gauges as an optional upgrade for real-time monitoring and control.
What is the maintenance requirement for the precision spindles?
The spindles are designed for continuous operation with recommended preventative maintenance every 1,000 hours to ensure optimal performance and longevity.
