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High-Yield & Efficient OSB Production Line with Continuous Hot Press

This production line incorporates advanced continuous flat press technology, engineered for high-capacity, high-efficiency, and high-quality production of OSB (Oriented Strand Board). The fully integrated system includes automated strand preparation, precision resin blending, multi-layer oriented forming, continuous hot pressing, and intelligent finishing processes. It offers outstanding advantages such as high production speed, consistent panel quality, and low energy consumption. Equipped with an intelligent control system, the line enables full-process data monitoring and remote management. Suitable for large-scale, continuous industrial operation, it meets the steady demand for high-performance OSB panels in construction, furniture, packaging, and related industries.
 
Availability:
  • MH-OSB

  • MINGHUNG

High-Yield & Efficient OSB Production Line with Continuous Hot Press


China wood based panel machinery

The high-capacity and high-efficiency OSB production line is a modern manufacturing system designed with the core objectives of continuous operation, maximized output, optimized energy efficiency, and stable, high-quality production. It represents an industrial upgrade in OSB manufacturing through high automation, precise process control, and integrated intelligent material handling.



Key Performance Characteristics  


High Capacity: Annual designed capacity for a single line can reach 300,000 to 600,000 cubic meters (depending on continuous press specifications and product thickness), far surpassing traditional multi-opening press lines (typically 100,000-250,000 m³/year).

High Efficiency:

    Extremely fast production speed: Continuous press line speed can reach 40-120 meters per minute (depending on panel thickness).

    Near-zero non-production time: Eliminates the cyclical interruptions for loading, unloading, and press opening/closing inherent to multi-opening presses.

    High operational availability: Designed operational rate often exceeds 90%.

High Quality and Stability:

    The continuous, constant hot-pressing process ensures exceptionally uniform physical properties along and across the panel.

    Precise thickness control (tolerance can be within ±0.15mm).

    Excellent surface flatness, requiring minimal sanding allowance, leading to high raw material utilization.

High Energy Efficiency and Low Consumption:

    High thermal efficiency of the continuous press reduces energy consumption per unit product by 15-30% compared to intermittent presses.

    High utilization rate of adhesives (especially MDI), with application rates capable of precise optimization.

    High automation significantly reduces labor cost per unit product.


Production Process  


Raw material (small-diameter logs, wood chips) → Flaking → Drying → Screening/Sorting → Blending → Multi-Layer Oriented Forming → Continuous Flat Press Hot Pressing → Cooling → Trimming → Sanding → Grading & Packaging. Among these, mat forming and continuous hot pressing are the core processes enabling high capacity and efficiency.


OSB Production process


MINGHUNG wood based panel production line


Production Equipment  

OSB wood flakes making machine

1. Raw Material Handling & Preparation Equipment

Log Debarker

Drum or Disc Chipper

Flaker (Ring or Drum Type)

Chip/Strand Screening and Sorting System (Vibrating Screens, Air Classifiers)

Wet Strand Storage Silo and Conveying System




MINGHUNG OSB Wood chipping process

chipper

Oriented Strand Board Cylindrical Sieve

cylindrical sieve


Chips drying Machine for OSB Production Line

2. Drying Section Equipment

Rotary Drum Dryer (Triple-pass or Single-pass)

Hot Air Furnace System (Gas, Oil, or Biomass Fuel)

Dried Strand Screening and Conveying System

Dry Strand Storage Silos



Oriented Strand Board Production Line Glue Mixer System

3. Blending & Resin Supply System

Dry Strand Weighing Scales

High-Speed Rotary Blender

Resin Storage and Supply System (for MDI/PF/PMDI)

Wax Emulsion and Other Additive Supply Systems

Blended Strand Holding Bin



Forming Machine for OSB Production Line

4. Forming Section Equipment (Core Area 1)

Strand Metering and Distribution System

High-Intensity Oriented Former (Mechanical or Pneumatic, Multi-Layer Capable)

Mat Pre-press (Belt or Roller Type)

Online Mat Weighing and Density Profiling System

Edge Trimming and Scrap Mat Recycling System



MINGHUNG MDF PB OSB Continuous Hot Press Machine Line

5. Hot Pressing Section Equipment (Core Area 2)

Continuous Flat Press or Multi-Opening Hot Press

  Steel Belt and Drive System

  Heating Platens and Hydraulic System

  Online Thickness Gauging and Servo Control System

Press Infeed Forming Belt and Acceleration System

Press Outfeed Transfer System




MINGHUNG OSB dryer rack

6. Post-Press & Cutting Equipment

Star Cooler or Roller Cooling System

Longitudinal Trimming Saws

Cross-Cut Saws

Panel Stacking/De-stacking System

Intermediate Storage and Conditioning Area



Double Sides Sander Line for PB OSB MDF

7. Sanding & Finishing Equipment

Wide-Belt Sander (4-head, 6-head, or 8-head configuration)

Dust Extraction and Sander Dust Recovery System

Panel Grading and Inspection Station

Automatic Packaging and Stretch Wrapping System

Finished Product Storage and Dispatch System



Siemens PLC for MDF PB OSB production line

8. Auxiliary & Utility Systems

Electrical Control System (PLC/DCS, Central Control Room)

Hydraulic and Pneumatic Power Packs

Thermal Energy Center (Thermal Oil Heater / Steam Boiler)

Environmental Protection Systems (Baghouse Filters, VOC Abatement, Water Treatment)

Compressed Air Station and Chilled Water System





Introduction to the Continuous Flat Press  


1. Working Principle

The continuous flat press employs a steel belt conveying system to feed the formed and pre-pressed continuous mat into a long (often tens of meters) heating and pressing zone formed by upper and lower sets of heated platens. Carried by the steel belts at a constant speed, the mat undergoes continuous resin curing under set temperature, pressure, and thickness control, transforming from a loose mat at the infeed to a solid, continuous panel strip at the outfeed.


2. Core Structure and Subsystems

Steel Belt System:

    High-Strength Alloy Steel Belts: Approximately 2-3mm thick, with special anti-adhesive coating (e.g., PTFE), resistant to high temperature, wear, and fatigue.

    Drive and Tensioning System: Main drive rollers provide power; tension rollers maintain constant belt tension for smooth, slip-free operation.

    Steering System: Monitors and corrects belt misalignment in real-time, critical for safe continuous operation.

Heated Platen System:

    Zoned Heating Platens: The press is divided lengthwise into multiple pressure/temperature zones (e.g., preheating, main pressing, calibrating zones), each independently temperature-controlled (commonly using thermal oil, precise to ±1°C).

    Hydraulic System: Utilizes a matrix of numerous (often hundreds) small hydraulic cylinders mounted on the platens. A hydraulic servo system enables continuous, precise local pressure adjustment for panel thickness control, which is the core technology for achieving high thickness accuracy.

Thickness Control System:

    Online Thickness Gauge: Scans panel thickness in real-time at the press exit.

    Closed-Loop Control: Thickness data is fed back to the hydraulic servo system, which continuously adjusts the pressure of corresponding cylinders to compensate for thickness deviations caused by variations in strand geometry, moisture content, or mat density.

Infeed and Outfeed Systems:

    Infeed Sealing and Pressure Transition Zone: Prevents premature resin cure ("pre-cure") at mat edges and ensures a smooth pressure transition.

    Outfeed Cooling and Tension Zone: Allows initial panel stabilization and maintains stable belt run.


Details of continuous flat pressing lines


Advantages Compared to Multi-Opening Presses

Feature

Continuous Flat Press

Traditional Multi-Opening Press

Production Mode

True continuous production, no interruption

Intermittent cyclic production (load-press-unload)

Capacity

Extremely high, determined by linear speed

Lower, limited by cycle time and number of openings

Product Quality

Uniform longitudinal properties, very high thickness accuracy

Possible property variation between openings

Panel Dimensions

Unlimited length, flexible cutting

Fixed by platen size

Energy Consumption

High thermal efficiency, lower energy per unit

Significant heat loss due to frequent opening/closing

Automation

Fully integrated into continuous automated line

Requires complex loading/unloading systems

Flexibility

Ideal for high-volume, single or similar thickness products

Relatively more flexible for changing thickness specifications



If interested please contact us for a quote.


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Email: osbmdfmachinery@gmail.com



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