Curtain Coating Line for Flat Furniture & Wood Panels
Product Overview
This customizable curtain coating line uses a free-falling liquid curtain (or "veil") to apply a uniform coating layer onto flat or profiled substrates in a non-contact, high-speed continuous process. Available in flat furniture, high-speed roll-to-roll, and multi-side profile configurations.
Unlike roller or spray coating, curtain coating is a pre-metered, non-impact process that delivers excellent coverage at lower coat weights without scratching or film-splitting defects. It is widely used for achieving high-gloss mirror finishes on wood panels and for applying functional coatings on paper and film substrates.
Working principle: Coating is pumped to the curtain head and forms a continuous falling curtain (or "veil") between two adjustable knives (or over a weir). The substrate passes beneath the curtain at a controlled speed; the liquid film transfers uniformly onto the surface. With multi-layer capability, the system can apply several functional layers in a single pass, optimizing cost and performance.
Technical Specifications
| Parameter |
Flat Furniture Model |
High-Speed Roll-to-Roll Model |
Multi-Side Profile Model |
| Max coating width (customizable) |
Up to 1,320 mm |
Up to 2,000+ mm |
Up to 1,300 mm |
| Substrate types |
Flat panels: MDF, particleboard, plywood, door panels |
Paper, film, PSA labels, aluminum foil |
Irregular profiles: 3-sided/4-sided |
| Coating method |
Gravity head / Pressure head |
Pressure head (high-speed stability) |
Customizable head orientation |
| Max line speed (customizable) |
5 - 30 m/min |
Up to 1,000 m/min |
Up to 80 m/min |
| Coating thickness range (customizable) |
10 - 200 µm (wet) |
5 - 100 µm (wet) |
10 - 200 µm |
| Coating uniformity |
±2-3% across width |
±2% across width |
±3% |
| Curing method (customizable) |
UV curing / IR / Hot air |
Hot air / UV / IR |
UV / Hot air |
| Coating head type (customizable) |
Gravity head / Pressure head |
Pressure head |
Pressure head (adjustable angle) |
| Curtain height (customizable) |
100 - 300 mm |
100 - 300 mm |
100 - 300 mm |
| Head type options (customizable) |
Single / Twin-head |
Single / Multi-layer |
Single / Multi-head |
| Control system |
PLC + HMI touchscreen |
PLC + HMI touchscreen |
PLC + HMI touchscreen |
| Power supply |
380V, 50/60Hz, 3-phase |
380V, 50/60Hz, 3-phase |
380V, 50/60Hz, 3-phase |
| Typical application |
Furniture, doors, flooring, decorative panels |
PSA labels, packaging, barrier coatings |
Window frames, trim, decorative profiles |
Applications
- Furniture industry: High-gloss UV topcoats on flat cabinet doors, shelves, and tabletops
- Flooring: Floorboards, wood composite, and decorative panels
- Paper & packaging: Barrier coatings, PSA label stock, specialty papers
- Building materials: MDF panels, wall panels, door skins
- Automotive & electronics: Functional film coatings
- Irregular profiles: Window frames, decorative trims, 3-sided/4-sided coated profiles
Customization Options
This curtain coating line is highly customizable to meet your specific production requirements:
- Coating width: Customizable from 600mm to 2000+mm
- Coating head type: Gravity head (low maintenance, easy operation) vs. Pressure head (high precision, high speed) - customizable
- Number of heads: Single-head, twin-head, or multi-layer configurations
- Curing system: UV, IR, hot air drying, or multi-stage combination - customizable
- Substrate handling: Flat panels (conveyor belt) or roll-to-roll (unwind/rewind) - customizable
- Profile coating: 3-side or 4-side coating with adjustable head angles
- Coating supply: Constant-temperature tank with viscosity control, deaeration and bubble-removal system
- Automation: Manual, semi-automatic, or fully automatic with IoT remote monitoring
- Line length: Customizable from 10m to 30m+ depending on drying/curing requirements
Key Features
- Non-impact coating: No scratching, no film splitting, fewer sheet breaks
- Excellent uniformity: Consistent coating in both machine direction and cross-web direction
- High-speed capability: Up to 1000 m/min for large-scale industrial applications
- Multi-layer capability: Apply several functional layers in a single pass
- Contour coating: Virtually 100% coverage at low coat weights - ideal for barrier applications
- Precise coat weight control: Adjustable pump flow rate for thickness accuracy
- Environmentally friendly: Minimal material waste, precise thickness control
- Wide viscosity & coat weight range: Single head accommodates various formulations
- Built-in deaeration & anti-bubble system: Ensures defect-free curtain and even film surface
- Easy maintenance: Sealed bearings, solvent-resistant PU belts, quick-clean head design
Support and Services
- Free process consultation - send your substrate and coating for trial coating
- Custom layout design for your production floor
- On-site installation and commissioning (customizable support packages)
- Operator training program included
- Remote troubleshooting via video call or IoT monitoring
- 12-month warranty on mechanical components (consumables: blades, belts excluded)
- Spare parts availability from regional warehouses
- Lifetime technical support via phone, email, or chat
Packing and Shipping
- Packing: Anti-rust film + reinforced plywood/wooden case for main body and control cabinet; foam padding for fragile components (control panel, sensors)
- Standard model lead time: 30-45 days after order confirmation
- Custom configuration lead time: 30-60 days (longer for custom widths or multi-head configurations)
- Shipping: FOB Shanghai / CIF by sea, air, or rail
- Customizable: Export crating, custom labeling, destination port documentation
Frequently Asked Questions
Q1: What is the difference between a gravity head and a pressure head curtain coater?
A: Gravity head forms the curtain by gravity flow over a weir - simpler, lower maintenance. Pressure head uses knife compression to form a precise, high-velocity veil - better for higher speeds and thinner coatings. The choice is customizable based on your application.
Q2: What is the typical coating speed for flat panel furniture applications?
A: Standard models operate at 5-30 m/min. Custom high-speed versions can reach up to 80 m/min for profile applications.
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