MDF(medium density fiberboard)
chipboard/particle board
oriented strand board
Ⅰ. Types of Engineered Wood Panels
Type | Raw Material | Density(kg/m³) | Key Properties | Applications |
PB | Wood chips + UF resin | 600-750 | Low cost, easy machining, weak screw holding | Furniture internals |
MDF | Wood fibers + MUF resin | 720-850 | Smooth surface, carvable, poor moisture resistance | Cabinet doors, moldings |
OSB | Strands + PF resin | 600-680 | High MOR(≥35MPa), waterproof | Wall sheathing, roofing |
Plywood | Veneers + PF resin | 500-650 | Isotropic strength, impact-resistant | Concrete formwork, marine |
HPL | Kraft paper + MF resin | 1,350-1,450 | Abrasion resistance(≥4,000 cycles), chemical-proof | Lab countertops, facades |
Ⅱ. Continuous Press Key Components
Core Systems
Steel Belt:
SUS304 belt (1.2-2.0mm thick), laser-textured surface (Ra=3.2μm)
Tension control (±0.5kN) with hydraulic servo
Heating Platen:
Zoned heating (1.2-1.8m/zone), independent PID control (±1.5℃)
Multi-layer hydraulic cylinders (0-10MPa)
Drive System:
VFD motors (250-800kW) + planetary gearboxes
Safety Frame:
Cast steel frame (stiffness ≥8GN/m) with thermal compensation
Ⅲ. Continuous Press Working Principle
Three-stage Thermo-mechanical Process
1. Compression Zone (Entry):
- High T/P (180-220℃, 5-8MPa) melts resin
- Density compressed from 300 to target (e.g., 650kg/m³ for OSB)
2. Curing Zone (Middle):
- Constant T/P (±2℃, 3-4MPa) for resin polymerization
- Dwell time: `t = L/V` (L=press length, V=belt speed)
3. Stabilization Zone (Exit):
- Stepwise pressure release (2MPa→0.5MPa)
- Water spray cools boards from 200℃ to <50℃
Ⅳ. Press Variations by Panel Type
Parameter | OSB Press | MDF Press | HPL Press |
Max Pressure | 8 MPa | 5 MPa | 12 MPa |
Heating Method | Thermal oil + steam | Pure steam | Electric heaters |
Belt Speed | 15-30 m/min | 20-50 m/min | 3-10 m/min |
Unique Design | Strand orienter | Precision fiber meter | Mirror-finished platens |
Ⅴ. CE Certification Essentials
Standards: EN 848-3:2012 + Machinery Directive 2006/42/EC
Safety Interlocks:
Mechanical:
- Platen position switches (dual magnetic sensors)
- Belt misalignment E-stop (triggered at >5mm deviation)
Electrical:
- Safety relays (e.g., PILZ PNOZ) for dual-channel control
- Maintenance key switches (hardwired power disconnect)
Hydraulic:
- Pressure fault tolerance: Relief valve activates at >110% setpoint
Human-Machine Safety:
- Two-hand control (<0.5s activation interval)
- Laser safety scanners (300mm height, 14mm resolution)
Ⅵ. Safety Enhancements
Thermal Protection:
- 50mm ceramic fiber insulation (surface temp ≤45℃)
- Auto-fire suppression (CO₂ discharge ≤100ms)
Emergency Systems:
- Redundant hydraulic brakes (stopping distance <1.5m @50m/min)
- Pressure dump valves (90% release in 0.5s)
Smart Monitoring:
- Bearing temperature tracking (>85℃ alarm)
- Vibration analysis (FFT-based fault diagnosis)
Q:How long the production time?
A:If one set machine,3-4 months;If the full production line 6-8 months.
Q:What can you purchase from us?
A:Particle board production line, directional particle board production line, medium/high fiber board production line, hot press,preforming press machine, plywood production line, automatic production line for hot press, veneer dryer, hot press, cold press machine and other woodworking machinery.
Q:What services can we provide?
A:Accepted delivery terms: FOB, CFR, CIF:
Accepted payment currencies: USD, EUR, RMB;
Accepted payment methods: T/T, L/C, D/P, D/A, PayPal, Western Union, Escrow;
Languages used: English, Chinese, Spanish, Russian
Customize Your Line! Full-service solution from layout design to production optimization. Request a tailored proposal now.
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com