MH-OSB
MINGHUNG
1.Super-Large Scale & High Efficiency:
Capacity Guarantee: Achieves stable output based on 7,200-7,500 annual operating hours, equivalent to a daily output exceeding 1,200 m³, ensuring strong market supply capability.
Streamlined Operation: Features fully automated material handling from raw material intake to finished product dispatch, minimizing manual intervention and ensuring stable, efficient production rhythm.
2.Industrial-Grade Product Quality:
Core Equipment Assurance: Utilizes a world-leading Continuous Flat Press, the heart of industrial-grade quality. Its uniform pressure and temperature fields ensure exceptionally consistent density profile, high internal bond strength, and precise thickness tolerance (e.g., ±0.2mm).
Precise Oriented Forming: Equipped with a high-precision, multi-functional forming station to achieve optimal orientation of surface layer strands, granting the panels superior Modulus of Rupture (MOR) and Modulus of Elasticity (MOE), fully compliant with European and American structural board standards (e.g., PS2, EN300).
3.High Intelligence & Automation:
Centralized Integrated Control System (DCS/MES): The entire line is managed by a Distributed Control System. A central control room monitors, records, and optimizes every process parameter in real-time.
Predictive Maintenance: The system monitors equipment health and analyzes data to provide early warnings for potential failures, allowing for planned maintenance and maximizing uptime.
4.Exceptional Energy Efficiency & Economy:
Energy Self-Sufficiency System: Includes a large-scale Energy Plant that uses all biomass waste generated during production as fuel to supply most or all of the heat required for dryers and the press, drastically reducing external energy costs.
Environmental Compliance: Incorporates efficient bag-house dust collectors, exhaust gas treatment systems, and noise reduction equipment to ensure emissions, dust, and noise control meet or exceed international standards.
This production line adopts the globally mainstream continuous press process, which can be broken down into eight core sections.
Section 1: Raw Material Preparation and Storage
Process Purpose: To process raw logs into clean, uniformly sized wood chips, laying the foundation for subsequent strand production.
Detailed Steps:
1. Log Feeding: Heavy-duty gantry cranes or log grapples place logs (typically fast-growing poplar, pine, etc.) from the storage yard onto heavy-duty chain conveyors.
2. Debarking: Logs pass through a Drum Debarker. Tumbling inside the rotating drum, logs collide with each other, and friction removes the bark. The bark is conveyed away and can be used as fuel for the energy plant.
3. Washing: Debarked logs pass through a water spray system to wash away adhered dirt and impurities, ensuring strand cleanliness.
4. Chipping: Clean logs are fed into a Heavy-Duty Disc Chipper. Equipped with several knives, it cuts the logs into standard-sized chips (typically 20-30mm long, 3-5mm thick).
5. Chip Screening and Storage: The produced chips are screened by a vibrating screen. Acceptable chips are conveyed via belt or pneumatic system to a large Chip Storage Silo. Oversized chips are recirculated for re-chipping. The silo ensures continuous feed for the production line.
Section 2: Strand Preparation, Drying, and Classification
Process Purpose: To convert wood chips into standard strands, dry them to precise moisture content, and strictly separate them into face and core layer specifications.
Detailed Steps:
1. Flaking: Chips are metered from the silo and fed into the core equipment, the Ring Flaker. Chips are shaved into thin, elongated ideal strands by knives mounted on a high-speed rotating ring. This is a critical step determining strand geometry and quality.
2. Face/Core Strand Separation: The produced strands are immediately transported via pneumatic pipelines to different drying systems, enabling separate processing for face and core layers.
3. Drying: Face and core strands enter independent Rotary Drum Dryers. Heated by high-temperature media (hot air or flue gas) from the energy plant, strands make full contact with the heat inside the rotating drum. Moisture content is rapidly reduced from about 40-60% to the precise range of 2-4%. Temperature and time are strictly controlled to prevent strand degradation.
4. Post-Drying Screening: Dried strands are first classified by a Vibrating Screen or Pendulum Screen. The screening separates:
Oversized Material: Returned to the flaker for re-processing.
Acceptable Face Layer Material: Thin, small strands for the panel surfaces.
Acceptable Core Layer Material: Slightly thicker/larger strands for the panel core.
Fines (Dust): Collected and sent to the energy plant as fuel.
Section 3: Resin Blending and Mixing (Core Technology Section)
Process Purpose: To apply resin and additives accurately and uniformly to the strand surfaces.
Detailed Steps:
1. Strand Metering: Dried and classified acceptable face and core strands are precisely metered using Belt Scales or Screw Metering Devices, ensuring a stable face-to-core ratio.
2. Resin and Additive Preparation:
Resin: Primarily environmentally friendly and high-bond-strength MDI resin, stored and circulated under constant temperature.
Water Repellent (Wax Emulsion): Emulsified and stored in mixing tanks.
(For FR boards) Flame Retardant: Prepared in proportion and controlled by an independent dosing system.
3. High-Speed Blending: Metered strands are continuously fed into a Ring Blender. Inside the blender:
Atomized MDI resin is sprayed uniformly via high-pressure nozzles.
Wax emulsion is sprayed simultaneously.
(If applicable) Flame retardant is added synchronously with precision.
Strands are tossed and turned by the high-speed rotation, ensuring every strand surface is evenly coated. This process is completed within seconds, offering extremely high efficiency.
Section 4: Mat Forming and Pre-pressing
Process Purpose: To form the resinated strands into a uniform, stable mat with a "oriented face layers, cross-oriented or random core layer" structure, and provide initial compression.
Detailed Steps:
1. Oriented Forming: Face and core strands enter a Mechanical Forming Station via different conveyors.
Face Forming Head: Uses throwing wheels with flights to orient the elongated face strands along the panel's length.
Core Forming Head: Lays the thicker core strands randomly or in a cross-oriented direction.
Typically, a multi-layer formation like "core-face-face-core" is used to create a symmetrical structure and prevent warping.
2. Mat Weighing and Metal Detection: The formed loose mat passes over an Online Scale to detect uniformity of mat weight. Simultaneously, a Metal Detector scans for metal contaminants that could damage the press.
3. Pre-pressing: The mat enters a Continuous Belt Pre-press. It is lightly compressed under relatively low pressure to form a "green mat" with sufficient strength to hold together before entering the main press and to expel some air.
Section 5: Hot Pressing and Cooling
Process Purpose: To permanently bond the strands into a high-density, strong panel by curing the resin under high temperature and pressure.
Detailed Steps:
1. Continuous Hot Pressing: The pre-pressed mat enters the heart of the line – the Continuous Flat Press. The mat is sandwiched between two massive heated steel belts and conveyed through a press with a press frame dozens of meters long.
Pressure Control: The press is divided into multiple pressure zones, applying a precisely controlled pressure curve via a hydraulic system.
Temperature Control: Heated platens are filled with high-temperature thermal oil, typically maintained at 200-220°C. Heat is transferred to the mat via the steel belts.
Speed Control: Press speed is inversely proportional to panel thickness. It's faster for 15mm panels and slower for thicker ones.
During this process, MDI resin rapidly polymerizes (cures) under heat and pressure, firmly bonding the strands.
2. Synchronous Cutting: The continuous panel exiting the press is cut to preset lengths by a Flying Cut-off Saw that synchronizes its speed with the panel.
3. Cooling: The hot panels immediately enter a Star Cooler or Roller Cooler for rapid cooling with forced air. The purposes are:
To stop the thermal reaction and stabilize panel properties.
To evaporate excess moisture.
To prevent deformation or blistering due to excessive temperature differentials.
Section 6: Trimming and Sanding
Process Purpose: To process the cooled, rough-edged panels into finished boards with precise dimensions and a smooth surface.
Detailed Steps:
1. Edge Trimming: Panels first pass through a Double-End Trimming Saw to cut off the irregular rough edges from pressing, establishing the final width.
2. Cut-to-Length: The trimmed panels are cut to final length (e.g., 2440mm, 1220mm) as per order requirements by a Cross-Cut Saw.
3. Sanding: Panels enter a Calibrating Wide-Belt Sander (typically with 3 or 4 sanding heads). The sander uses belts of different grits to sand the top and bottom surfaces:
Eliminating thickness variation and the pre-cured surface layer.
Achieving a smooth, flat surface suitable for subsequent processing (e.g., laminating).
Precisely controlling the final thickness (e.g., 15.0mm ± 0.2mm).
Section 7: Inspection and Packaging
Process Purpose: To ensure 100% of shipped products meet quality standards and are protected for transport.
Detailed Steps:
1. Automatic Grading and Inspection: Panels pass an Inspection Station where operators inspect for visual defects (e.g., corner damage, surface flaws) and grade them according to national standards.
2. Stacking: Qualified panels are stacked neatly by grade and specification using a Robotic Stacker or automatic stacking device.
3. Packaging: The stacked packs are wrapped using an Automatic Packaging Line with plastic film or paper, and secured with steel or plastic strapping to prevent moisture ingress and transport damage.
4. Warehousing: Packaged finished products are transported by forklift to the finished goods warehouse for shipment.
Section 8: Auxiliary Systems (Integrated Throughout)
Energy Plant: Uses all wood waste generated during production (bark, sawdust, sander dust, trim ends) as fuel to produce high-temperature flue gas or heat thermal oil, providing thermal energy for dryers and the press. This achieves energy self-sufficiency, saving energy and being environmentally friendly.
Dust Extraction System: Dust collection hoods are installed at dust generation points (e.g., flaking, screening, sanding). Dust is collected via ducts by a Central Baghouse Filter, cleaning the air. Collected dust can also be used as fuel.
Central Control System: Based on a PLC and SCADA system, the central control room enables real-time monitoring, automatic adjustment, data logging, and fault alarm for thousands of parameters (start/stop, speed, temperature, pressure, flow) across the entire line. It is the brain of the production line.
Section | Equipment Name | In-Depth Technical Description & Key Specifications |
1. Raw Material Prep | Heavy-Duty Ring Flaker | Core Principle: Chips fall from the inlet into a high-speed rotating knife ring, where they are shaved into strands by the interaction between flying knives fixed on the ring and the bed knife. |
Key Features: | ||
Large knife ring diameter (over 2.5m), ensuring high output and strand length. | ||
Special knife and knife grinding technology, guaranteeing uniform strand thickness and smooth surface. | ||
Adjustable gap for producing face/core strands of different thicknesses. | ||
| ||
2. Drying | Rotary Drum Dryer | Core Principle: Strands undergo heat and mass exchange with high-temperature media in a slowly rotating, inclined drum, in co-current or counter-current flow. |
Key Features: | ||
Large scale, diameter can reach 3-4m, length over 30m. | ||
Internal flight design continuously lifts and showers strands, increasing contact area for uniform drying. | ||
Precise temperature control system to prevent overheating/fire or insufficient drying. | ||
| ||
3. Blending | Ring Blender | Core Principle: Strands are dispersed into a suspended state within the annular space formed by a high-speed rotor and stator. Resin is atomized and sprayed uniformly onto the strands via multiple high-pressure nozzles. |
Key Features: | ||
Very high rotational speed ensures single-layer distribution of strands for complete coverage. | ||
Abrasion-resistant lining (e.g., polyurethane) to resist MDI adhesion and strand abrasion. | ||
Precise resin dosing linked to strand flow rate, with error less than ±1.5%. | ||
| ||
4. Forming | Mechanical Orienting Forming Station | Core Principle: Utilizes the differential linear speed of throwing wheels with flights to apply an orienting force to falling strands, aligning them in a specific direction. |
Key Features: | ||
Multiple forming heads allow flexible multi-layer mat formation (e.g., 3-layer, 5-layer). | ||
Adjustable speed of throwing wheels and gaps to control forming speed and orientation effect. | ||
Online weighing and metal detection are integrated into the forming system. | ||
| ||
5. Pressing (Most Critical) | Continuous Flat Press | Core Principle: The mat is sandwiched between two massive steel belts and conveyed continuously through a press frame comprising numerous heated platens, subjected to set pressure and temperature. |
Key Features: | ||
Long press length (typically over 50m for a 450k m³ line) ensures sufficient curing time. | ||
Zoned pressure and heating allow precise control of pressure and temperature in different sections, optimizing density profile. | ||
High-precision steel belts and tensioning system ensure panel flatness and stable operation. | ||
Advanced hydraulic and control systems for fast response and stable pressure. | ||
| ||
6. Sanding | Calibrating Wide-Belt Sander | Core Principle: The panel passes through several sanding heads in series. Each head has a high-speed rotating sanding belt for roughing, finishing, and polishing. |
Key Features: | ||
Multiple sanding heads (typically 3-4), with progressively finer grits. | ||
Contact roll or pad platen technology ensures even sanding across the entire panel surface, eliminating washboarding. | ||
Automatic thickness measurement and feedback system adjusts sanding amount in real-time to guarantee thickness tolerance. | ||
| ||
Whole Plant | Central Control System (DCS/SCADA) | Core Principle: Comprises operator stations (industrial PCs), master PLC, distributed remote I/O stations, and an industrial network. |
Key Features: | ||
Graphical Human-Machine Interface (HMI) dynamically displays the entire process flow and equipment status. | ||
Recipe Management stores production parameters for different products (e.g., different thicknesses) for one-click recall. | ||
Historical data logging and report generation facilitate quality traceability and production analysis. | ||
Fault diagnosis and safety interlocks protect equipment and personnel. | ||
| ||
Claim Your Free OSB Line Layout! Get end-to-end plant design from strand preparation to sanding. Receive 3D factory plan within 30 days.
Our contacts:
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
1.Super-Large Scale & High Efficiency:
Capacity Guarantee: Achieves stable output based on 7,200-7,500 annual operating hours, equivalent to a daily output exceeding 1,200 m³, ensuring strong market supply capability.
Streamlined Operation: Features fully automated material handling from raw material intake to finished product dispatch, minimizing manual intervention and ensuring stable, efficient production rhythm.
2.Industrial-Grade Product Quality:
Core Equipment Assurance: Utilizes a world-leading Continuous Flat Press, the heart of industrial-grade quality. Its uniform pressure and temperature fields ensure exceptionally consistent density profile, high internal bond strength, and precise thickness tolerance (e.g., ±0.2mm).
Precise Oriented Forming: Equipped with a high-precision, multi-functional forming station to achieve optimal orientation of surface layer strands, granting the panels superior Modulus of Rupture (MOR) and Modulus of Elasticity (MOE), fully compliant with European and American structural board standards (e.g., PS2, EN300).
3.High Intelligence & Automation:
Centralized Integrated Control System (DCS/MES): The entire line is managed by a Distributed Control System. A central control room monitors, records, and optimizes every process parameter in real-time.
Predictive Maintenance: The system monitors equipment health and analyzes data to provide early warnings for potential failures, allowing for planned maintenance and maximizing uptime.
4.Exceptional Energy Efficiency & Economy:
Energy Self-Sufficiency System: Includes a large-scale Energy Plant that uses all biomass waste generated during production as fuel to supply most or all of the heat required for dryers and the press, drastically reducing external energy costs.
Environmental Compliance: Incorporates efficient bag-house dust collectors, exhaust gas treatment systems, and noise reduction equipment to ensure emissions, dust, and noise control meet or exceed international standards.
This production line adopts the globally mainstream continuous press process, which can be broken down into eight core sections.
Section 1: Raw Material Preparation and Storage
Process Purpose: To process raw logs into clean, uniformly sized wood chips, laying the foundation for subsequent strand production.
Detailed Steps:
1. Log Feeding: Heavy-duty gantry cranes or log grapples place logs (typically fast-growing poplar, pine, etc.) from the storage yard onto heavy-duty chain conveyors.
2. Debarking: Logs pass through a Drum Debarker. Tumbling inside the rotating drum, logs collide with each other, and friction removes the bark. The bark is conveyed away and can be used as fuel for the energy plant.
3. Washing: Debarked logs pass through a water spray system to wash away adhered dirt and impurities, ensuring strand cleanliness.
4. Chipping: Clean logs are fed into a Heavy-Duty Disc Chipper. Equipped with several knives, it cuts the logs into standard-sized chips (typically 20-30mm long, 3-5mm thick).
5. Chip Screening and Storage: The produced chips are screened by a vibrating screen. Acceptable chips are conveyed via belt or pneumatic system to a large Chip Storage Silo. Oversized chips are recirculated for re-chipping. The silo ensures continuous feed for the production line.
Section 2: Strand Preparation, Drying, and Classification
Process Purpose: To convert wood chips into standard strands, dry them to precise moisture content, and strictly separate them into face and core layer specifications.
Detailed Steps:
1. Flaking: Chips are metered from the silo and fed into the core equipment, the Ring Flaker. Chips are shaved into thin, elongated ideal strands by knives mounted on a high-speed rotating ring. This is a critical step determining strand geometry and quality.
2. Face/Core Strand Separation: The produced strands are immediately transported via pneumatic pipelines to different drying systems, enabling separate processing for face and core layers.
3. Drying: Face and core strands enter independent Rotary Drum Dryers. Heated by high-temperature media (hot air or flue gas) from the energy plant, strands make full contact with the heat inside the rotating drum. Moisture content is rapidly reduced from about 40-60% to the precise range of 2-4%. Temperature and time are strictly controlled to prevent strand degradation.
4. Post-Drying Screening: Dried strands are first classified by a Vibrating Screen or Pendulum Screen. The screening separates:
Oversized Material: Returned to the flaker for re-processing.
Acceptable Face Layer Material: Thin, small strands for the panel surfaces.
Acceptable Core Layer Material: Slightly thicker/larger strands for the panel core.
Fines (Dust): Collected and sent to the energy plant as fuel.
Section 3: Resin Blending and Mixing (Core Technology Section)
Process Purpose: To apply resin and additives accurately and uniformly to the strand surfaces.
Detailed Steps:
1. Strand Metering: Dried and classified acceptable face and core strands are precisely metered using Belt Scales or Screw Metering Devices, ensuring a stable face-to-core ratio.
2. Resin and Additive Preparation:
Resin: Primarily environmentally friendly and high-bond-strength MDI resin, stored and circulated under constant temperature.
Water Repellent (Wax Emulsion): Emulsified and stored in mixing tanks.
(For FR boards) Flame Retardant: Prepared in proportion and controlled by an independent dosing system.
3. High-Speed Blending: Metered strands are continuously fed into a Ring Blender. Inside the blender:
Atomized MDI resin is sprayed uniformly via high-pressure nozzles.
Wax emulsion is sprayed simultaneously.
(If applicable) Flame retardant is added synchronously with precision.
Strands are tossed and turned by the high-speed rotation, ensuring every strand surface is evenly coated. This process is completed within seconds, offering extremely high efficiency.
Section 4: Mat Forming and Pre-pressing
Process Purpose: To form the resinated strands into a uniform, stable mat with a "oriented face layers, cross-oriented or random core layer" structure, and provide initial compression.
Detailed Steps:
1. Oriented Forming: Face and core strands enter a Mechanical Forming Station via different conveyors.
Face Forming Head: Uses throwing wheels with flights to orient the elongated face strands along the panel's length.
Core Forming Head: Lays the thicker core strands randomly or in a cross-oriented direction.
Typically, a multi-layer formation like "core-face-face-core" is used to create a symmetrical structure and prevent warping.
2. Mat Weighing and Metal Detection: The formed loose mat passes over an Online Scale to detect uniformity of mat weight. Simultaneously, a Metal Detector scans for metal contaminants that could damage the press.
3. Pre-pressing: The mat enters a Continuous Belt Pre-press. It is lightly compressed under relatively low pressure to form a "green mat" with sufficient strength to hold together before entering the main press and to expel some air.
Section 5: Hot Pressing and Cooling
Process Purpose: To permanently bond the strands into a high-density, strong panel by curing the resin under high temperature and pressure.
Detailed Steps:
1. Continuous Hot Pressing: The pre-pressed mat enters the heart of the line – the Continuous Flat Press. The mat is sandwiched between two massive heated steel belts and conveyed through a press with a press frame dozens of meters long.
Pressure Control: The press is divided into multiple pressure zones, applying a precisely controlled pressure curve via a hydraulic system.
Temperature Control: Heated platens are filled with high-temperature thermal oil, typically maintained at 200-220°C. Heat is transferred to the mat via the steel belts.
Speed Control: Press speed is inversely proportional to panel thickness. It's faster for 15mm panels and slower for thicker ones.
During this process, MDI resin rapidly polymerizes (cures) under heat and pressure, firmly bonding the strands.
2. Synchronous Cutting: The continuous panel exiting the press is cut to preset lengths by a Flying Cut-off Saw that synchronizes its speed with the panel.
3. Cooling: The hot panels immediately enter a Star Cooler or Roller Cooler for rapid cooling with forced air. The purposes are:
To stop the thermal reaction and stabilize panel properties.
To evaporate excess moisture.
To prevent deformation or blistering due to excessive temperature differentials.
Section 6: Trimming and Sanding
Process Purpose: To process the cooled, rough-edged panels into finished boards with precise dimensions and a smooth surface.
Detailed Steps:
1. Edge Trimming: Panels first pass through a Double-End Trimming Saw to cut off the irregular rough edges from pressing, establishing the final width.
2. Cut-to-Length: The trimmed panels are cut to final length (e.g., 2440mm, 1220mm) as per order requirements by a Cross-Cut Saw.
3. Sanding: Panels enter a Calibrating Wide-Belt Sander (typically with 3 or 4 sanding heads). The sander uses belts of different grits to sand the top and bottom surfaces:
Eliminating thickness variation and the pre-cured surface layer.
Achieving a smooth, flat surface suitable for subsequent processing (e.g., laminating).
Precisely controlling the final thickness (e.g., 15.0mm ± 0.2mm).
Section 7: Inspection and Packaging
Process Purpose: To ensure 100% of shipped products meet quality standards and are protected for transport.
Detailed Steps:
1. Automatic Grading and Inspection: Panels pass an Inspection Station where operators inspect for visual defects (e.g., corner damage, surface flaws) and grade them according to national standards.
2. Stacking: Qualified panels are stacked neatly by grade and specification using a Robotic Stacker or automatic stacking device.
3. Packaging: The stacked packs are wrapped using an Automatic Packaging Line with plastic film or paper, and secured with steel or plastic strapping to prevent moisture ingress and transport damage.
4. Warehousing: Packaged finished products are transported by forklift to the finished goods warehouse for shipment.
Section 8: Auxiliary Systems (Integrated Throughout)
Energy Plant: Uses all wood waste generated during production (bark, sawdust, sander dust, trim ends) as fuel to produce high-temperature flue gas or heat thermal oil, providing thermal energy for dryers and the press. This achieves energy self-sufficiency, saving energy and being environmentally friendly.
Dust Extraction System: Dust collection hoods are installed at dust generation points (e.g., flaking, screening, sanding). Dust is collected via ducts by a Central Baghouse Filter, cleaning the air. Collected dust can also be used as fuel.
Central Control System: Based on a PLC and SCADA system, the central control room enables real-time monitoring, automatic adjustment, data logging, and fault alarm for thousands of parameters (start/stop, speed, temperature, pressure, flow) across the entire line. It is the brain of the production line.
Section | Equipment Name | In-Depth Technical Description & Key Specifications |
1. Raw Material Prep | Heavy-Duty Ring Flaker | Core Principle: Chips fall from the inlet into a high-speed rotating knife ring, where they are shaved into strands by the interaction between flying knives fixed on the ring and the bed knife. |
Key Features: | ||
Large knife ring diameter (over 2.5m), ensuring high output and strand length. | ||
Special knife and knife grinding technology, guaranteeing uniform strand thickness and smooth surface. | ||
Adjustable gap for producing face/core strands of different thicknesses. | ||
| ||
2. Drying | Rotary Drum Dryer | Core Principle: Strands undergo heat and mass exchange with high-temperature media in a slowly rotating, inclined drum, in co-current or counter-current flow. |
Key Features: | ||
Large scale, diameter can reach 3-4m, length over 30m. | ||
Internal flight design continuously lifts and showers strands, increasing contact area for uniform drying. | ||
Precise temperature control system to prevent overheating/fire or insufficient drying. | ||
| ||
3. Blending | Ring Blender | Core Principle: Strands are dispersed into a suspended state within the annular space formed by a high-speed rotor and stator. Resin is atomized and sprayed uniformly onto the strands via multiple high-pressure nozzles. |
Key Features: | ||
Very high rotational speed ensures single-layer distribution of strands for complete coverage. | ||
Abrasion-resistant lining (e.g., polyurethane) to resist MDI adhesion and strand abrasion. | ||
Precise resin dosing linked to strand flow rate, with error less than ±1.5%. | ||
| ||
4. Forming | Mechanical Orienting Forming Station | Core Principle: Utilizes the differential linear speed of throwing wheels with flights to apply an orienting force to falling strands, aligning them in a specific direction. |
Key Features: | ||
Multiple forming heads allow flexible multi-layer mat formation (e.g., 3-layer, 5-layer). | ||
Adjustable speed of throwing wheels and gaps to control forming speed and orientation effect. | ||
Online weighing and metal detection are integrated into the forming system. | ||
| ||
5. Pressing (Most Critical) | Continuous Flat Press | Core Principle: The mat is sandwiched between two massive steel belts and conveyed continuously through a press frame comprising numerous heated platens, subjected to set pressure and temperature. |
Key Features: | ||
Long press length (typically over 50m for a 450k m³ line) ensures sufficient curing time. | ||
Zoned pressure and heating allow precise control of pressure and temperature in different sections, optimizing density profile. | ||
High-precision steel belts and tensioning system ensure panel flatness and stable operation. | ||
Advanced hydraulic and control systems for fast response and stable pressure. | ||
| ||
6. Sanding | Calibrating Wide-Belt Sander | Core Principle: The panel passes through several sanding heads in series. Each head has a high-speed rotating sanding belt for roughing, finishing, and polishing. |
Key Features: | ||
Multiple sanding heads (typically 3-4), with progressively finer grits. | ||
Contact roll or pad platen technology ensures even sanding across the entire panel surface, eliminating washboarding. | ||
Automatic thickness measurement and feedback system adjusts sanding amount in real-time to guarantee thickness tolerance. | ||
| ||
Whole Plant | Central Control System (DCS/SCADA) | Core Principle: Comprises operator stations (industrial PCs), master PLC, distributed remote I/O stations, and an industrial network. |
Key Features: | ||
Graphical Human-Machine Interface (HMI) dynamically displays the entire process flow and equipment status. | ||
Recipe Management stores production parameters for different products (e.g., different thicknesses) for one-click recall. | ||
Historical data logging and report generation facilitate quality traceability and production analysis. | ||
Fault diagnosis and safety interlocks protect equipment and personnel. | ||
| ||
Claim Your Free OSB Line Layout! Get end-to-end plant design from strand preparation to sanding. Receive 3D factory plan within 30 days.
Our contacts:
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
