Fully Automatic Continuous Hot Press Machine Produces 150000 M³ of Oriented Strand Board Per Year
Oriented Strand Board (OSB)
> Oriented Strand Board (OSB) is an engineered structural panel made from aligned wood strands. Its cross-oriented layers provide superior bending strength (≥22MPa) and moisture resistance (swelling ＜15%).
Key applications:
> - Construction sheathing (walls/roofs)
> - Container flooring substrates
> - Industrial pallet manufacturing
> Eco-Advantage: Compatible with formaldehyde-free MDI binders, meeting
CARB NAF/EPA TSCA standards.
Continuous Flat Press for OSB is the core equipment for producing OSB. It combines directional paving technology with dynamic hot pressing process to ensure the mechanical properties and stability of the board.Detailed introduction below：
Working principle and process flow
(1) Directed paving and pre-pressing
Directed paving:
OSB wood chips are divided into surface layer (longitudinally arranged) and core layer (transversely arranged), and are oriented by a special paving machine (such as a mechanical directional head or airflow paving system). The length of the surface layer wood chips is usually 50-100mm, and the core layer wood chips are shorter (20-50mm).
Pre-pressing and shaping:
The paved slab enters the pre-pressing machine (pressure 0.5-1.5MPa), and the air is removed and the direction of the wood chips is initially fixed by mechanical roller pressing or high-frequency pre-pressing to prevent the structure from loosening during the subsequent hot pressing process.
(2) Continuous hot pressing stage
High pressure zone (initial curing):
Temperature 210–230℃, pressure 3.0–5.0MPa, quickly close the slab and activate the adhesive (usually phenolic resin or MDI adhesive), and the surface wood shavings directional structure is initially cured.
Medium pressure zone (plasticization balance):
Temperature 200–220℃, pressure 2.0–3.5MPa, maintain full penetration of the core layer adhesive, and balance the curing rate of the inner and outer layers.
Low pressure zone (setting and stress release):
Temperature 180–200℃, pressure 1.0–2.0MPa, control the final thickness and release internal stress to avoid board warping.
(3) Cooling and post-processing
Cooling section:
The pressed sheet is cooled to below 50°C by a circulating water cooling system to stabilize the sheet size.
Cutting and sanding:
The sheet is cut into standard sheets using a high-speed sawing system, and the surface flatness is adjusted using a sander.
Core Advantages
Technology | Innovation | Value |
Strand Alignment | Laser-guided robotic layering, angle deviation ≤5° | +30% MOR strength |
Smart Pressing | 40-zone temperature control (±1℃) + pressure compensation | 25% steam energy saving |
Servo Hydraulics | Bosch Rexroth closed-loop system, 0.02mm sync precision | ±0.1mm thickness tolerance (EN 300) |
Predictive Maintenance | Vibration sensors + AI failure alerts | ≥90% reduction in unplanned downtime |
Technical Specifications
Parameter | Value |
Annual Capacity | 150,000 m³ |
Layering Speed | 30-100 layers/min |
Platen Size | 2,800×600 mm |
Max. Pressure | 6 MPa |
Installed Power | 4,200 kW |
OSB Density Range | 600-680kg/m³ |
Mechanical pictures 
Company introduction
