MH-CHP
MINGHUNG
Definition: Custom-developed continuous flat press for high-strength film-faced particleboard (reuse ≥20 cycles), requiring:
High-Pressure Capability: Max. working pressure ≥7MPa (vs. 3-4MPa for furniture board)
High-Temperature Stability: Platen temperature 220±1°C (for rapid MDI curing)
Anti-Stick Treatment: Resolves adhesion from high resin content (surface resin ≥12%)
Gradient Pressing: Achieves differentiated density control (surface ≥950kg/m³, core ≥750kg/m³)
Evolution: Disposable wood formwork → Steel formwork → High-strength film-faced particleboard formwork (current mainstream, >60% market share).
Layer | Material & Process Requirements | Function |
Surface | Fine particles + high MDI resin (≥12%), density≥950kg/m³ | Wear/water resistance |
Core | Large flakes with oriented layers, density≥750kg/m³ | Bending strength (MOR≥25MPa) |
Overlay | Phenolic-impregnated paper (≥130g/m²) hot-pressed | Demolding & reuse cycles |
Type | Standard Size (mm) | Thickness (mm) | Application |
Standard Film-Faced | 1220×2440 | 15, 18 | Slabs/columns (≤15 cycles) |
High-Strength Film-Faced | 1220×2440, 915×1830 | 18, 21 | Shear walls/heavy loads (≥20 cycles) |
Extra-Thick Load-Bearing | 1250×2500 | 24, 27 | Bridge piers/foundations |
1. Strength Performance
MOR: ≥22MPa (longitudinal), ≥18MPa (transverse)
MOE: ≥3500MPa (30% above GB/T 17656)
2. Water Resistance & Durability
4h boiling thickness swell ≤5% (vs. ≥12% for standard board)
No delamination in alkaline concrete (pH=13, 72h)
3. Cost Efficiency
Price = 1/3 of steel formwork, reuse cost ≤¥0.5/m²·cycle
1. Press Design
System | Specifications | Function |
Heating Platens | Surface hardness HRC 52-55, flatness ≤0.1mm/m | Uniform thickness control |
Hydraulic System | Max pressure 7MPa, zonal control (≥8 zones) ±0.3MPa | Core layer gradient pressing |
Heating System | Thermal oil temp control ±1°C (200-220°C) | Accelerate MDI curing |
Steel Belt Anti-Stick | Laser texturing (Ra=3.0-4.0μm) | Prevent resin adhesion |
2. Supporting Processes
Particle Preparation: Core flakes: 50-80mm long/15-30mm wide; Surface fines: ≤2mm fragments
Resin Application: Dual-channel spraying (MDI + wax emulsion), error ≤±2%
Forming Technology: Surface fines ≥40%, core orientation angle ≤15° (↑25% longitudinal strength)
wood flaker machine
glue system
minghung forming machine
3. Key Technologies for Formwork Adaptation
（1）High-Strength Structural Support
Frame Rigidity: Box-welded structure (steel thickness ≥120mm), deformation resistance 0.05mm/MPa
Support Roll Layout: Dense roll system (pitch ≤80mm) + high-Cr alloy sleeves (HRC 60)
（2）Oriented Structure Forming
Core Flake Alignment: Airflow guidance (orientation angle ≤15°)
Strength Enhancement: 25% higher longitudinal MOR (25-28MPa)
（3） Online Quality Monitoring
Monitoring Point | Sensor Type | Control Accuracy |
Mat Density | Microwave densitometer | ±1.5% |
Thickness Deviation | Laser scanner (8-point) | ±0.1mm |
Resin Cure Degree | Infrared thermography | 0.5°C resolution |
Process | Parameters | Quality Control |
Particle Drying | Final MC 3±0.5% | Prevent pre-curing |
Pre-pressing | Line pressure ≥150N/mm | Initial density ≥650kg/m³ |
Hot Pressing | Pressure 4-6MPa, time 0.6-0.8min/mm | Resin penetration ≥0.5mm |
Overlay Pressing | Temp 160°C, pressure 1.2MPa, 60s | Peel strength ≥1.5N/mm |
1. Meaning of "Reuse ≥20 Cycles"
Complete Process Cycle
Each reuse cycle includes:Installation → Concrete pouring (lateral pressure ≥60kPa) → Stripping (mechanical impact) → High-pressure water cleaning (cement residue removal)
Post-Cycle Performance Requirements
After 20 cycles, the formwork must retain:Corner integrity ≥95% (no edge collapse/delamination);MOR retention ≥85% (Longitudinal MOR ≥18.7MPa);Thickness swell ≤8% (4h boiling test)
2. Reuse Cycle Ranges by Formwork Grade
Formwork Type | Reuse Cycles | Application | Key Characteristics |
Standard Film-Faced | 8-12 cycles | Low-rise residential slabs | Surface density ≥800kg/m³, 10% MDI resin |
High-Strength Film-Faced | 20-30 cycles | High-rise shear walls/commercial | Surface density ≥950kg/m³, oriented core |
Reinforced Alloy-Faced | 50+ cycles | Nuclear projects/precision walls | Steel-framed + phenolic resin impregnation |
3. Key Factors Affecting Reuse Cycles
Factor | Impact Mechanism | Improvement Measures |
Surface Density | Density <900kg/m³ causes film wear | Gradient pressing to ≥950kg/m³ |
MDI Penetration Depth | <0.5mm leads to particle loss during cleaning | Extend press time (0.7 min/mm) |
Film Adhesion | Peel strength <1.2N/mm causes tearing | Overlay paper ≥130g/m² |
Edge Sealing | Unsealed edges swell 300% faster | PVC edging + waterproof coating |
Shandong MingHung OSB&MDF Machinery Equipment is a China professional factory who specilize in manufacturering and offering Wood based panel machine, including OSB making machine, MDF making machine, and Chipboard /PB making machine.
Our factory with the advanced processing lathes, Mature production technology, and Professional engineers and technicians, and independent ability of reasearch and development, and quickly service, ensure that we have the ability to offer you the suitable and good woodworking machinery as different conditions and requires.
We maintain a long-term cooperation with a well-known freight forwarding company, and adhere to the customer-first philosophy. We strictly implement the quality inspection process before shipment to ensure that each batch of products meets international quality standards, We deeply understand that high-quality service is the cornerstone of winning customer trust, and we always create value for customers with professional and efficient supply chain management. We sincerely invite you to join hands and work together to createa win-win future.
Reuse ≥20 cycles" signifies that the formwork must maintain structural integrity through >20 construction cycles under harsh conditions, relying on:
Material Science: High surface density (≥950kg/m³) + deep MDI curing
Process Tech: Gradient pressing (7MPa high-pressure zone) + precise temp control (220±1°C)
Design: Reinforced film-substrate interface (peel strength ≥1.5N/mm)
Definition: Custom-developed continuous flat press for high-strength film-faced particleboard (reuse ≥20 cycles), requiring:
High-Pressure Capability: Max. working pressure ≥7MPa (vs. 3-4MPa for furniture board)
High-Temperature Stability: Platen temperature 220±1°C (for rapid MDI curing)
Anti-Stick Treatment: Resolves adhesion from high resin content (surface resin ≥12%)
Gradient Pressing: Achieves differentiated density control (surface ≥950kg/m³, core ≥750kg/m³)
Evolution: Disposable wood formwork → Steel formwork → High-strength film-faced particleboard formwork (current mainstream, >60% market share).
Layer | Material & Process Requirements | Function |
Surface | Fine particles + high MDI resin (≥12%), density≥950kg/m³ | Wear/water resistance |
Core | Large flakes with oriented layers, density≥750kg/m³ | Bending strength (MOR≥25MPa) |
Overlay | Phenolic-impregnated paper (≥130g/m²) hot-pressed | Demolding & reuse cycles |
Type | Standard Size (mm) | Thickness (mm) | Application |
Standard Film-Faced | 1220×2440 | 15, 18 | Slabs/columns (≤15 cycles) |
High-Strength Film-Faced | 1220×2440, 915×1830 | 18, 21 | Shear walls/heavy loads (≥20 cycles) |
Extra-Thick Load-Bearing | 1250×2500 | 24, 27 | Bridge piers/foundations |
1. Strength Performance
MOR: ≥22MPa (longitudinal), ≥18MPa (transverse)
MOE: ≥3500MPa (30% above GB/T 17656)
2. Water Resistance & Durability
4h boiling thickness swell ≤5% (vs. ≥12% for standard board)
No delamination in alkaline concrete (pH=13, 72h)
3. Cost Efficiency
Price = 1/3 of steel formwork, reuse cost ≤¥0.5/m²·cycle
1. Press Design
System | Specifications | Function |
Heating Platens | Surface hardness HRC 52-55, flatness ≤0.1mm/m | Uniform thickness control |
Hydraulic System | Max pressure 7MPa, zonal control (≥8 zones) ±0.3MPa | Core layer gradient pressing |
Heating System | Thermal oil temp control ±1°C (200-220°C) | Accelerate MDI curing |
Steel Belt Anti-Stick | Laser texturing (Ra=3.0-4.0μm) | Prevent resin adhesion |
2. Supporting Processes
Particle Preparation: Core flakes: 50-80mm long/15-30mm wide; Surface fines: ≤2mm fragments
Resin Application: Dual-channel spraying (MDI + wax emulsion), error ≤±2%
Forming Technology: Surface fines ≥40%, core orientation angle ≤15° (↑25% longitudinal strength)
wood flaker machine
glue system
minghung forming machine
3. Key Technologies for Formwork Adaptation
（1）High-Strength Structural Support
Frame Rigidity: Box-welded structure (steel thickness ≥120mm), deformation resistance 0.05mm/MPa
Support Roll Layout: Dense roll system (pitch ≤80mm) + high-Cr alloy sleeves (HRC 60)
（2）Oriented Structure Forming
Core Flake Alignment: Airflow guidance (orientation angle ≤15°)
Strength Enhancement: 25% higher longitudinal MOR (25-28MPa)
（3） Online Quality Monitoring
Monitoring Point | Sensor Type | Control Accuracy |
Mat Density | Microwave densitometer | ±1.5% |
Thickness Deviation | Laser scanner (8-point) | ±0.1mm |
Resin Cure Degree | Infrared thermography | 0.5°C resolution |
Process | Parameters | Quality Control |
Particle Drying | Final MC 3±0.5% | Prevent pre-curing |
Pre-pressing | Line pressure ≥150N/mm | Initial density ≥650kg/m³ |
Hot Pressing | Pressure 4-6MPa, time 0.6-0.8min/mm | Resin penetration ≥0.5mm |
Overlay Pressing | Temp 160°C, pressure 1.2MPa, 60s | Peel strength ≥1.5N/mm |
1. Meaning of "Reuse ≥20 Cycles"
Complete Process Cycle
Each reuse cycle includes:Installation → Concrete pouring (lateral pressure ≥60kPa) → Stripping (mechanical impact) → High-pressure water cleaning (cement residue removal)
Post-Cycle Performance Requirements
After 20 cycles, the formwork must retain:Corner integrity ≥95% (no edge collapse/delamination);MOR retention ≥85% (Longitudinal MOR ≥18.7MPa);Thickness swell ≤8% (4h boiling test)
2. Reuse Cycle Ranges by Formwork Grade
Formwork Type | Reuse Cycles | Application | Key Characteristics |
Standard Film-Faced | 8-12 cycles | Low-rise residential slabs | Surface density ≥800kg/m³, 10% MDI resin |
High-Strength Film-Faced | 20-30 cycles | High-rise shear walls/commercial | Surface density ≥950kg/m³, oriented core |
Reinforced Alloy-Faced | 50+ cycles | Nuclear projects/precision walls | Steel-framed + phenolic resin impregnation |
3. Key Factors Affecting Reuse Cycles
Factor | Impact Mechanism | Improvement Measures |
Surface Density | Density <900kg/m³ causes film wear | Gradient pressing to ≥950kg/m³ |
MDI Penetration Depth | <0.5mm leads to particle loss during cleaning | Extend press time (0.7 min/mm) |
Film Adhesion | Peel strength <1.2N/mm causes tearing | Overlay paper ≥130g/m² |
Edge Sealing | Unsealed edges swell 300% faster | PVC edging + waterproof coating |
Shandong MingHung OSB&MDF Machinery Equipment is a China professional factory who specilize in manufacturering and offering Wood based panel machine, including OSB making machine, MDF making machine, and Chipboard /PB making machine.
Our factory with the advanced processing lathes, Mature production technology, and Professional engineers and technicians, and independent ability of reasearch and development, and quickly service, ensure that we have the ability to offer you the suitable and good woodworking machinery as different conditions and requires.
We maintain a long-term cooperation with a well-known freight forwarding company, and adhere to the customer-first philosophy. We strictly implement the quality inspection process before shipment to ensure that each batch of products meets international quality standards, We deeply understand that high-quality service is the cornerstone of winning customer trust, and we always create value for customers with professional and efficient supply chain management. We sincerely invite you to join hands and work together to createa win-win future.
Reuse ≥20 cycles" signifies that the formwork must maintain structural integrity through >20 construction cycles under harsh conditions, relying on:
Material Science: High surface density (≥950kg/m³) + deep MDI curing
Process Tech: Gradient pressing (7MPa high-pressure zone) + precise temp control (220±1°C)
Design: Reinforced film-substrate interface (peel strength ≥1.5N/mm)
