Four-Roller PET Film Laminating Machine for Balsa Wood and Composite Core Materials
- Maximum workpiece size : 1350 mm × 100 mm
- Main hot oil roller sealing speed: 0–12 m/min
- Material thickness & sealing pressure control: Servo motor controlled
- Air Input:0.4 – 0.7 MPa
- Oil Heating System：380V, 63kW
- Application: Balsa Wood Four‑Roll PET Sealing Machine is specifically designed for sealing the open‑cell / honeycomb‑like microstructure of balsa wood and for surface treatment of PET foam core materials.
Product Description
Balsa Wood Four‑Roll PET Sealing Machine is specifically designed for sealing the open‑cell / honeycomb‑like microstructure of balsa wood and for surface treatment of PET foam core materials. In wind turbine blade manufacturing, untreated balsa wood absorbs excessive resin during vacuum infusion, significantly increasing blade weight.
This sealing machine applies a dedicated sealant (or composite layer) to both surfaces of the core material, creating a dense barrier that effectively blocks resin penetration. Advanced PET sealing technology can reduce resin uptake by more than 80% , lowering both material cost and final component weight.
Machining effect display
Features of Four-Roll PET Sealing Machine
Prevents resin over‑absorption
Seals the natural pores and micro‑channels of balsa wood, drastically reducing resin intake during vacuum infusion – saves resin and reduces blade weight.
High‑temperature hot oil roller system
Rollers feature a metal aerospace coating (max. 400°C), avoiding the drawbacks of traditional Teflon coating (wear, peeling, uneven heating).
Servo‑controlled sealing pressure & thickness
Ensures uniform sealing layer thickness across different core material dimensions, maintaining process consistency.
Double‑side processing
Simultaneously seals both surfaces of balsa wood or PET foam panels, improving efficiency.
Large workpiece capacity
Maximum panel size: 1350 mm (width) × 100 mm (thickness) – compatible with standard wind blade core materials.
High production speed
Main hot oil roller sealing speed: 0 – 12 m/min – suitable for continuous inline operation.
Product Parameters
| Parameter | Specification |
|---|---|
| Power input | 380V, 63kW |
| Main hot oil roller sealing speed | 0–12 m/min |
| Air input | 0.4–0.7 MPa |
| Dimensions (L × W × H) | 6900 mm × 2350 mm × 2100 mm |
| Maximum workpiece size | 1350 mm × 100 mm |
| Material thickness & sealing pressure control | Servo motor controlled |
| User interface | Touch screen with intuitive parameter adjustment |
| Hot oil roller coating | Metal aerospace coating, maximum temperature 400°C (avoids drawbacks of Teflon coating) |
| Application | PET double-sided sealing processing |
Application Areas
Wind Turbine Blade Manufacturing
Core equipment for sealing balsa wood and PET foam core materials – prevents resin ingress, reduces blade weight, and improves production efficiency.
Composite Sandwich Panel Production
Pre‑treatment of core materials (balsa, PET, PVC, PU) before lamination with face sheets – ensures optimal resin control and interfacial bonding.
High‑Strength Core Material Processing
Used in CNC‑integrated lines for rapid surface treatment of PET foam and balsa wood, maximizing material utilization for lightweight structural components.
Aerospace and Marine Composites
Sealing of lightweight cores for high‑performance sandwich structures where resin uptake must be strictly controlled.
Get In Touch With Us