MH-OSB
MINGHUNG
Core Process: Continuously presses pre-formed OSB strand mats (typically 3-layer structure) under high temperature and pressure to cure the resin, bond the strands, and set the thickness.
Critical Role: The "heart" of an OSB production line. Directly determines board density profile, thickness accuracy, surface quality, mechanical properties, and output.
Process Characteristics:
High Temp & Pressure: Platen temperatures typically 200-250°C, specific pressure up to 30-50 bar (or higher).
Continuous Operation: The mat is conveyed by steel belts (or chain felts) through a long, narrow pressing gap formed by heated upper and lower platens, enabling high-volume production far exceeding batch presses.
Zone Control: Divided lengthwise into multiple independent pressure zones, temperature zones (and sometimes steam injection zones) for precise control of the curing profile (pressure, temperature, time).
Main Frame: Massive steel structure, withstands total press force, foundation for width.
steel structure
steel frame for OSB continuous press
Heated Platens: Contain channels for heating media (hot oil or steam), provide heat. Length can be tens of meters, defines the width capacity.
Steel Belt/Chain Felt System: Carries the mat through the press, transfers pressure and heat, protects platen surfaces.
continuous belt press
double steels
Hydraulic System: Provides massive closing force and zoned pressure control.
hydraulic station
hydraulic system
Heating System: Supplies stable heat to the platens.
Drive System: Drives steel belts/chain felts at constant speed.
Thickness Control System: Precisely controls final board thickness (often via roller position or hydraulic pad height adjustment).
Side Sealing/Damper System: Core component for width adjustment.
Automation Control System: PLC system integrating control of pressure, temperature, speed, thickness, etc.
siemens PCL
siemens PCL accessories
Large Strands & Penetration: OSB uses large oriented strands, requiring longer press times (slower line speed or longer press) and suitable pressure profiles to ensure full resin penetration and cure.
3-Layer Structure: Layered structure (finer surface strands, coarser core strands) demands excellent pressure distribution control for inter-layer bonding and density gradient.
High Strength & Dimensional Stability: Places extreme demands on pressure/temperature uniformity and degree of cure.
(1) Standard Widths:
2.5 meters (approx. 8 feet): A classic and mature width with stable technology and wide application.
2.7 meters (approx. 9 feet): Currently the most widely used and prevalent mainstream width globally, offering a good balance between capacity, technical reliability, and economy.
3.0 meters (approx. 10 feet): A mainstream choice for large modern production lines, significantly increasing capacity.
(2) Wide & Extra-Wide Widths (Development Trend):
3.5 meters (approx. 11.5 feet): Increasingly adopted by large new production lines pursuing higher single-line capacity and efficiency.
4.0 meters (approx. 13 feet) and above: Classified as extra-wide continuous presses, representing the current state-of-the-art.
You can make a comprehensive consideration based on specific production capacity requirements, product specifications, raw material guarantee capabilities, investment budget, and control of technical risks, and then select a customized continuous press machine that suits your needs.
(1) Actual Pressed Mat Width :Typically slightly larger than the nominal width of the final OSB panel.
Range: For mainstream continuous flat press lines, the actual pressed mat width during hot pressing generally ranges from 1300 mm to 2750 mm (1.3 m to 2.75 m).
Common Sizes: Currently, globally, 2440 mm (8 feet) and 2600 mm are very prevalent and core production widths. Many large production lines are optimized around this width range.
(2) Purpose of Adjustment: Width adjustment primarily serves to:
Produce finished products of different target widths (e.g., switching between 1220 mm and 1250 mm, or producing special widths).
Adapt to different raw material characteristics or process requirements (theoretically possible, but widths are relatively fixed in practice).
Facilitate steel belt changes or major maintenance (requiring adjustment).
(3) Adjustable Width Range:
1） Core Feature: A key advantage of the continuous flat press is its ability to rapidly and continuously adjust the pressing width during production to accommodate mats of different specifications.
2）Range: The adjustable range depends on the specific press model and design.
Generally:
Typical Range: Most modern continuous flat presses allow continuous, stepless adjustment between approximately 65% and 100% of the maximum design width.
Minimum Width Limit: The minimum adjustable width is constrained by mechanical structure (e.g., side cylinder stroke, frame limitations) and process stability requirements (too narrow may cause mat instability within the press).
Maximum Width Limit: This is the press's design maximum width and cannot be exceeded.
3）Adjustment Method: Achieved by precisely controlling the hydraulic systems (side cylinders) on both sides of the press, synchronously moving the steel belts and heating plates inward or outward to achieve continuous width changes.
The advantage of the continuous flat press lies in its broad and continuously adjustable width capability. A single press can typically be steplessly adjusted within a range of about 65% to 100% of its maximum design width.
OSB is an engineered wood panel made from oriented wood strands (typically aspen/pine) bonded with synthetic resins (MDI/PF) under heat and pressure, renowned for high strength, dimensional stability, and versatility.
Surface layer | Long strands aligned parallel for bending resistance |
Core layer | Short strands cross-randomized for shear stiffness |
Resins | PF for surfaces, MDI for core (8-12% content) |
Density | 650-680 kg/m³ (higher than particleboard) |
1.Log processing:
Debarking → Stranding → Drying (3-5% MC)
2.Gluing and orientation:
Resin Blending → Oriented Forming (Surface: 0°-15°, Core: 45°-90°)
3.Hot press:
Continuous Press: 180-220°C/15-25MPa, Curing 40-90s
4.Post-processing:
Cooling → Trimming → Sanding (Thickness tol. ±0.1mm)
Claim Your Free OSB Line Layout! Get end-to-end plant design from strand preparation to sanding. Receive 3D factory plan within 30 days.
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
Core Process: Continuously presses pre-formed OSB strand mats (typically 3-layer structure) under high temperature and pressure to cure the resin, bond the strands, and set the thickness.
Critical Role: The "heart" of an OSB production line. Directly determines board density profile, thickness accuracy, surface quality, mechanical properties, and output.
Process Characteristics:
High Temp & Pressure: Platen temperatures typically 200-250°C, specific pressure up to 30-50 bar (or higher).
Continuous Operation: The mat is conveyed by steel belts (or chain felts) through a long, narrow pressing gap formed by heated upper and lower platens, enabling high-volume production far exceeding batch presses.
Zone Control: Divided lengthwise into multiple independent pressure zones, temperature zones (and sometimes steam injection zones) for precise control of the curing profile (pressure, temperature, time).
Main Frame: Massive steel structure, withstands total press force, foundation for width.
steel structure
steel frame for OSB continuous press
Heated Platens: Contain channels for heating media (hot oil or steam), provide heat. Length can be tens of meters, defines the width capacity.
Steel Belt/Chain Felt System: Carries the mat through the press, transfers pressure and heat, protects platen surfaces.
continuous belt press
double steels
Hydraulic System: Provides massive closing force and zoned pressure control.
hydraulic station
hydraulic system
Heating System: Supplies stable heat to the platens.
Drive System: Drives steel belts/chain felts at constant speed.
Thickness Control System: Precisely controls final board thickness (often via roller position or hydraulic pad height adjustment).
Side Sealing/Damper System: Core component for width adjustment.
Automation Control System: PLC system integrating control of pressure, temperature, speed, thickness, etc.
siemens PCL
siemens PCL accessories
Large Strands & Penetration: OSB uses large oriented strands, requiring longer press times (slower line speed or longer press) and suitable pressure profiles to ensure full resin penetration and cure.
3-Layer Structure: Layered structure (finer surface strands, coarser core strands) demands excellent pressure distribution control for inter-layer bonding and density gradient.
High Strength & Dimensional Stability: Places extreme demands on pressure/temperature uniformity and degree of cure.
(1) Standard Widths:
2.5 meters (approx. 8 feet): A classic and mature width with stable technology and wide application.
2.7 meters (approx. 9 feet): Currently the most widely used and prevalent mainstream width globally, offering a good balance between capacity, technical reliability, and economy.
3.0 meters (approx. 10 feet): A mainstream choice for large modern production lines, significantly increasing capacity.
(2) Wide & Extra-Wide Widths (Development Trend):
3.5 meters (approx. 11.5 feet): Increasingly adopted by large new production lines pursuing higher single-line capacity and efficiency.
4.0 meters (approx. 13 feet) and above: Classified as extra-wide continuous presses, representing the current state-of-the-art.
You can make a comprehensive consideration based on specific production capacity requirements, product specifications, raw material guarantee capabilities, investment budget, and control of technical risks, and then select a customized continuous press machine that suits your needs.
(1) Actual Pressed Mat Width :Typically slightly larger than the nominal width of the final OSB panel.
Range: For mainstream continuous flat press lines, the actual pressed mat width during hot pressing generally ranges from 1300 mm to 2750 mm (1.3 m to 2.75 m).
Common Sizes: Currently, globally, 2440 mm (8 feet) and 2600 mm are very prevalent and core production widths. Many large production lines are optimized around this width range.
(2) Purpose of Adjustment: Width adjustment primarily serves to:
Produce finished products of different target widths (e.g., switching between 1220 mm and 1250 mm, or producing special widths).
Adapt to different raw material characteristics or process requirements (theoretically possible, but widths are relatively fixed in practice).
Facilitate steel belt changes or major maintenance (requiring adjustment).
(3) Adjustable Width Range:
1） Core Feature: A key advantage of the continuous flat press is its ability to rapidly and continuously adjust the pressing width during production to accommodate mats of different specifications.
2）Range: The adjustable range depends on the specific press model and design.
Generally:
Typical Range: Most modern continuous flat presses allow continuous, stepless adjustment between approximately 65% and 100% of the maximum design width.
Minimum Width Limit: The minimum adjustable width is constrained by mechanical structure (e.g., side cylinder stroke, frame limitations) and process stability requirements (too narrow may cause mat instability within the press).
Maximum Width Limit: This is the press's design maximum width and cannot be exceeded.
3）Adjustment Method: Achieved by precisely controlling the hydraulic systems (side cylinders) on both sides of the press, synchronously moving the steel belts and heating plates inward or outward to achieve continuous width changes.
The advantage of the continuous flat press lies in its broad and continuously adjustable width capability. A single press can typically be steplessly adjusted within a range of about 65% to 100% of its maximum design width.
OSB is an engineered wood panel made from oriented wood strands (typically aspen/pine) bonded with synthetic resins (MDI/PF) under heat and pressure, renowned for high strength, dimensional stability, and versatility.
Surface layer | Long strands aligned parallel for bending resistance |
Core layer | Short strands cross-randomized for shear stiffness |
Resins | PF for surfaces, MDI for core (8-12% content) |
Density | 650-680 kg/m³ (higher than particleboard) |
1.Log processing:
Debarking → Stranding → Drying (3-5% MC)
2.Gluing and orientation:
Resin Blending → Oriented Forming (Surface: 0°-15°, Core: 45°-90°)
3.Hot press:
Continuous Press: 180-220°C/15-25MPa, Curing 40-90s
4.Post-processing:
Cooling → Trimming → Sanding (Thickness tol. ±0.1mm)
Claim Your Free OSB Line Layout! Get end-to-end plant design from strand preparation to sanding. Receive 3D factory plan within 30 days.
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
