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MH-OSB
MINGHUNG
The Source of Superior Grip:
Optimal Long-Strand Structure: A powerful ring flaker produces longer, more intact wood strands, creating a robust "reinforcement" within the panel, fundamentally enhancing pull-out resistance.
High-Strength Bonding System: Standard high-performance PMDI/MDI (Isocyanate) adhesive. It forms a chemical bond with wood fibers stronger than the wood itself, preventing crushing and powdering around screws.
Precise 3-Layer Oriented Structure: Precision forming equipment achieves a cross-oriented layup (surface layers longitudinal, core layer transverse), effectively distributing stress from fasteners, preventing splitting, and greatly improving both face and edge screw holding.
High-Pressure, High-Density Process: A high-tonnage continuous press applies extreme closing pressure, achieving an optimized density above 720 kg/m³, resulting in a compact, uniform structure that provides powerful lateral grip on fasteners.
Full-Line & Intelligent Control: The fully automated line ensures stable and consistent nail-holding performance through precise control and adjustability of key parameters (e.g., resin dosage, mat weight, press curve).
Turnkey Delivery: We provide complete services from plant layout and equipment manufacturing to installation, commissioning, and operator training, including process formulation guidance based on your target product performance.
Line Capacity: 100,000 – 300,000 m³ per annum (Customizable based on target density and thickness).
Core Panel Performance:
Internal Bond Strength: ≥ 0.50 N/mm² (Far exceeding EN300 OSB/3 standard), guaranteeing zero delamination.
Nail/Screw Holding Power (Typical):
Face Holding Power: ≥ 1100 N
Edge Holding Power: ≥ 800 N
Density Range: 680 – 750 kg/m³ (Can be optimized to the higher range for grip).
Moisture Resistance: Thickness Swelling (TS) ≤ 12%, ensuring grip strength is maintained in humid conditions.
This production line is a turnkey engineered system specifically designed to achieve the goals of "high density, high strength, and superior nail-holding power." Its equipment configuration is comprehensively enhanced and specifically selected based on a standard OSB line. The following is a list of the core equipment, organized sequentially according to the production flow:
Stage 1: Raw Material Preparation Section
Goal: To produce high-quality, clean, and normalization long strands.
1. Long-Log Debarker: Removes bark and impurities to ensure clean bonding surfaces.
2. Heavy-Duty Ring Flaker: One of the core pieces of equipment. Used to cut logs into narrow, thin strands over 75-100mm in length, which form the foundational "skeleton" for internal strength. Its disc design, cutting angle, and power are superior to standard flakers.
3. Strand Storage Silos & Conveying System: Provides temporary storage and uniform feeding of strands to the next process.
4. Multi-Deck High-Efficiency Vibrating Screen: Precisely screens and sorts strands into surface fines and core coarse material, ensuring uniform mat structure.
Stage 2: Drying & Sorting Section
Goal: To precisely control strand moisture content and perform further refined sorting.
5. Triple-Pass or Single-Pass Rotary Drum Dryer: Equipped with precise temperature control to uniformly reduce strand moisture content from 50% to a bone-dry state of 2-4%. Heat energy typically comes from an accompanying Energy Plant (burning sander dust and wood waste for energy recovery).
6. Air Classifier / Fine Screening System: Performs additional sorting after drying to remove excessive fines and poorly dried wet material, ensuring consistent strand quality entering the blending stage.
Stage 3: Blending & Mat Forming Section (Performance Critical)
Goal: To achieve high-strength resin application and precise oriented-structure forming.
7. High-Precision Metering Bins: Store dried surface and core strands separately, providing continuous and precise volumetric feeding via loss-in-weight feeders or belt scales.
8. Dedicated High-Pressure PMDI/MDI Blending System: One of the core pieces of equipment. Includes:
MDI resin storage and heated temperature control system.
High-pressure metering pumps and atomizing nozzles.
High-Speed Ring Blender: Ensures high-viscosity MDI resin coats each strand uniformly in an extremely short time.
9. Continuous Oriented Former: One of the core pieces of equipment. Typically a "Multi-Head Weigher + Mechanical Orienting Forming Head" structure.
Surface Forming Head(s): Precisely and uniformly lay resinated long, fine strands along the production line direction (longitudinal).
Core Forming Head(s): Lay resinated coarse strands in the transverse direction, creating the cross-oriented structure.
Forming accuracy directly determines panel density uniformity and isotropy, making it critical for nail-holding performance.
Stage 4: Hot Pressing & Curing Section (The Core Heart)
Goal: To cure and form the panel under high temperature and pressure, achieving high density and strength.
10. Mat Pre-Press: Provides initial compaction of the loose mat for easier handling and partial air removal.
11. Continuous Flat Die Press: The core and most expensive component of the entire line.
Type: Steel-belt continuous press.
Feature: Provides extremely high and stable closing pressure (significantly higher than standard OSB presses) to ensure the product reaches the target high density (e.g., over 720 kg/m³).
Control System: Integrates precise press cycle control (temperature, pressure, time) to ensure complete MDI resin cure.
Stage 5: Finishing & Cutting Section
Goal: To dimensionally finish the panel for thickness, size, and surface quality.
12. Star Cooler (or similar): Allows the hot panel (200°C) to cool slowly and uniformly, relieving internal stresses and preventing deformation.
13. Calibrating Sanding Line: One of the core pieces of equipment. Typically a 4-head or 6-head wide-belt sander.
Functions: a) Eliminate thickness variation from the press; b) Achieve precise final thickness (tolerance within ±0.2mm); c) Provide a smooth substrate for flooring overlays.
14. Cross-Cut and Rip Saws: Precisely cut panels to order dimensions for length and width.
15. Stacking & Packaging System: Automated stacking, weighing, labeling, and packaging.
Stage 6: Auxiliary & Control Systems
16. Energy Plant (Thermal Oil Heater): Burns production waste (bark, sander dust, trim) to generate thermal energy for the dryer and press, enabling energy self-sufficiency and environmental benefits.
17. Dust Collection & Air Filtration System: Centralized dust collection to ensure a clean production environment.
18. Central Control System (CCS): The brain of the entire production line. A PLC/DCS-based automation control system, integrating online quality inspection (e.g., X-ray thickness gauge, Density Profile Scanner, Metal Detector). It enables real-time production data monitoring, automatic process parameter adjustment, and fault diagnosis.
Equipment Configuration Overview Table
Section | Core Equipment | Key Role |
Raw Material | Heavy-Duty Ring Flaker | Creates premium long strands, forming the "rebar" skeleton |
Drying | High-Efficiency Rotary Drum Dryer | Precisely controls strand moisture content, ensuring bonding quality |
Blending | PMDI High-Pressure Blending System | Enables high-strength chemical bonding, forming the "super-concrete" |
Forming | Continuous Oriented Former | Constructs the "longitudinal-transverse-longitudinal" 3-layer oriented stress-dispersion structure |
Pressing | High-Tonnage Continuous Flat Die Press | Achieves high-density, homogeneous curing under high pressure |
Finishing | High-Precision Calibrating Sander | Guarantees final product thickness accuracy and surface flatness |
Full System | Central Control System & Online Inspection | Ensures stable, precise, and quality-controlled operation throughout the process |
This production process is specifically designed for manufacturing high-density, high-internal-bond "Superior Nail Holding OSB". It builds upon standard OSB processes by reinforcing four key stages—raw material preparation, forming, blending, and pressing—to achieve exceptional mechanical properties in the final product.
Stage 1: Raw Material Preparation
Log Handling: Long logs (e.g., poplar, pine) are debarked using a debarker. Bark removal is critical as bark adversely affects bond strength.
Strand Preparation (Key Step): Logs are fed into a Ring Flaker, which cuts them into uniform, narrow, thin strands (typically 75-100mm long, 0.4-0.7mm thick). Longer strands create a more continuous and robust "fiber network" within the panel, providing the physical foundation for high nail holding power.
Screening & Drying: Strands pass through multi-deck screens to be precisely separated into surface layer fines and core layer coarse material. They then enter a Rotary Drum Dryer, where moisture content is reduced from about 40-60% to a precise 2-4% under controlled temperature. Precise moisture control is crucial for uniform resin distribution and effective hot pressing later.
Stage 2: Blending & Mat Forming
Blending (Core Process): Dried surface and core strands enter separate High-Pressure Blending Machines. High-performance PMDI/MDI resin (not traditional formaldehyde-based resins) is applied via precise dosing and high-speed mixing to ensure each strand is uniformly coated. MDI resin forms irreversible chemical cross-links with wood fibers, creating a bond stronger than the wood itself.
Forming (Structural Key): Resinated strands are conveyed to the Continuous Oriented Former. This is the heart of creating the "3-layer oriented structure":
1. Bottom Layer: Fine, long surface strands are oriented parallel to the production line direction (longitudinal).
2. Core Layer: Larger core strands are oriented perpendicular to the line direction (transverse).
3. Top Layer: Longitudinal surface strands are laid again.
Purpose: This "cross-oriented" (longitudinal-transverse-longitudinal) structure balances panel strength in both directions and effectively distributes the stress from screw insertion across a wider network of strands, significantly enhancing edge holding power and resistance to splitting.
Stage 3: Hot Pressing & Curing (Performance-Defining Stage)
Pre-pressing & Feed: The loose mat is first lightly compacted by a pre-press to gain handling strength, then fed smoothly into the Continuous Flat Die Press.
Continuous Hot Pressing (Core Equipment): The mat passes through a long (tens of meters) heated-platen zone under high temperature (200-220°C) and extremely high pressure (significantly higher than for standard OSB). The process has three phases:
1. Closing & Compaction: Rapid compression to target thickness at the entry, initiating MDI resin flow and penetration.
2. Curing Under Pressure: Maintaining constant high pressure and temperature allows rapid polymerization of MDI resin with wood, forming strong chemical bonds.
3. Stress Relief: Gradual pressure reduction allows internal stresses to relax, minimizing deformation.
Result: Under sustained high pressure, strands are compacted densely, allowing precise density control in the high range of 700-750 kg/m³, resulting in an extremely compact and uniform internal structure.
Stage 4: Finishing & Quality Control
Cooling & Trimming: The hot panel enters a Star Cooler, where it cools slowly and uniformly under ambient air circulation to stabilize its dimensions and internal structure. Irregular edges are then trimmed off.
Sanding & Cutting: Panels pass through a High-Precision Calibrating Sander (typically 4-6 heads) to remove the pre-cured surface layer and achieve the exact final thickness with tight tolerance (down to ±0.15mm). The smooth, flat surface is also beneficial for end-use. Finally, panels are cross-cut and ripped to order dimensions.
Inspection & Packaging: Panels undergo 100% Online Inspection (X-ray thickness gauge, density profile scanner, automatic weighing) and are automatically graded based on thickness, density, and weight. Qualified products are labeled, packaged, and sent to storage.
Creating a "rebar" skeleton from premium long strands → Forming a "super-concrete" bond strength using MDI resin → Building a "stress-dispersion network" via 3-layer oriented forming → Manufacturing a "high-density, homogeneous structure" via the extreme pressure of continuous pressing. These four interlinked stages work in concert to ensure the final OSB product delivers exceptional nail holding power and structural strength.
The High Nail-Holding OSB from this line is a revolutionary material for:
Construction: Film-faced plywood for concrete formwork (including high-rise), offering high reusability with minimal edge damage at nail holes.
Logistics & Storage: Heavy-duty four-way pallets, large crate decking, with robust connections that withstand frequent forklift impact.
Industrial: Warehouse shelving dividers, heavy machinery packaging, providing reliable fastening support.
Special Structures: Temporary stage flooring, RV/container flooring, requiring strong fixing points for external structures.
We provide not just machinery, but performance assurance. We will work with you to define product standards based on your specific applications and ensure, through stable production line processes, that every batch of panels delivers the promised superior nail holding power, helping you build a core competitive advantage in the heavy-duty structural materials market.
Our contacts:
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
The Source of Superior Grip:
Optimal Long-Strand Structure: A powerful ring flaker produces longer, more intact wood strands, creating a robust "reinforcement" within the panel, fundamentally enhancing pull-out resistance.
High-Strength Bonding System: Standard high-performance PMDI/MDI (Isocyanate) adhesive. It forms a chemical bond with wood fibers stronger than the wood itself, preventing crushing and powdering around screws.
Precise 3-Layer Oriented Structure: Precision forming equipment achieves a cross-oriented layup (surface layers longitudinal, core layer transverse), effectively distributing stress from fasteners, preventing splitting, and greatly improving both face and edge screw holding.
High-Pressure, High-Density Process: A high-tonnage continuous press applies extreme closing pressure, achieving an optimized density above 720 kg/m³, resulting in a compact, uniform structure that provides powerful lateral grip on fasteners.
Full-Line & Intelligent Control: The fully automated line ensures stable and consistent nail-holding performance through precise control and adjustability of key parameters (e.g., resin dosage, mat weight, press curve).
Turnkey Delivery: We provide complete services from plant layout and equipment manufacturing to installation, commissioning, and operator training, including process formulation guidance based on your target product performance.
Line Capacity: 100,000 – 300,000 m³ per annum (Customizable based on target density and thickness).
Core Panel Performance:
Internal Bond Strength: ≥ 0.50 N/mm² (Far exceeding EN300 OSB/3 standard), guaranteeing zero delamination.
Nail/Screw Holding Power (Typical):
Face Holding Power: ≥ 1100 N
Edge Holding Power: ≥ 800 N
Density Range: 680 – 750 kg/m³ (Can be optimized to the higher range for grip).
Moisture Resistance: Thickness Swelling (TS) ≤ 12%, ensuring grip strength is maintained in humid conditions.
This production line is a turnkey engineered system specifically designed to achieve the goals of "high density, high strength, and superior nail-holding power." Its equipment configuration is comprehensively enhanced and specifically selected based on a standard OSB line. The following is a list of the core equipment, organized sequentially according to the production flow:
Stage 1: Raw Material Preparation Section
Goal: To produce high-quality, clean, and normalization long strands.
1. Long-Log Debarker: Removes bark and impurities to ensure clean bonding surfaces.
2. Heavy-Duty Ring Flaker: One of the core pieces of equipment. Used to cut logs into narrow, thin strands over 75-100mm in length, which form the foundational "skeleton" for internal strength. Its disc design, cutting angle, and power are superior to standard flakers.
3. Strand Storage Silos & Conveying System: Provides temporary storage and uniform feeding of strands to the next process.
4. Multi-Deck High-Efficiency Vibrating Screen: Precisely screens and sorts strands into surface fines and core coarse material, ensuring uniform mat structure.
Stage 2: Drying & Sorting Section
Goal: To precisely control strand moisture content and perform further refined sorting.
5. Triple-Pass or Single-Pass Rotary Drum Dryer: Equipped with precise temperature control to uniformly reduce strand moisture content from 50% to a bone-dry state of 2-4%. Heat energy typically comes from an accompanying Energy Plant (burning sander dust and wood waste for energy recovery).
6. Air Classifier / Fine Screening System: Performs additional sorting after drying to remove excessive fines and poorly dried wet material, ensuring consistent strand quality entering the blending stage.
Stage 3: Blending & Mat Forming Section (Performance Critical)
Goal: To achieve high-strength resin application and precise oriented-structure forming.
7. High-Precision Metering Bins: Store dried surface and core strands separately, providing continuous and precise volumetric feeding via loss-in-weight feeders or belt scales.
8. Dedicated High-Pressure PMDI/MDI Blending System: One of the core pieces of equipment. Includes:
MDI resin storage and heated temperature control system.
High-pressure metering pumps and atomizing nozzles.
High-Speed Ring Blender: Ensures high-viscosity MDI resin coats each strand uniformly in an extremely short time.
9. Continuous Oriented Former: One of the core pieces of equipment. Typically a "Multi-Head Weigher + Mechanical Orienting Forming Head" structure.
Surface Forming Head(s): Precisely and uniformly lay resinated long, fine strands along the production line direction (longitudinal).
Core Forming Head(s): Lay resinated coarse strands in the transverse direction, creating the cross-oriented structure.
Forming accuracy directly determines panel density uniformity and isotropy, making it critical for nail-holding performance.
Stage 4: Hot Pressing & Curing Section (The Core Heart)
Goal: To cure and form the panel under high temperature and pressure, achieving high density and strength.
10. Mat Pre-Press: Provides initial compaction of the loose mat for easier handling and partial air removal.
11. Continuous Flat Die Press: The core and most expensive component of the entire line.
Type: Steel-belt continuous press.
Feature: Provides extremely high and stable closing pressure (significantly higher than standard OSB presses) to ensure the product reaches the target high density (e.g., over 720 kg/m³).
Control System: Integrates precise press cycle control (temperature, pressure, time) to ensure complete MDI resin cure.
Stage 5: Finishing & Cutting Section
Goal: To dimensionally finish the panel for thickness, size, and surface quality.
12. Star Cooler (or similar): Allows the hot panel (200°C) to cool slowly and uniformly, relieving internal stresses and preventing deformation.
13. Calibrating Sanding Line: One of the core pieces of equipment. Typically a 4-head or 6-head wide-belt sander.
Functions: a) Eliminate thickness variation from the press; b) Achieve precise final thickness (tolerance within ±0.2mm); c) Provide a smooth substrate for flooring overlays.
14. Cross-Cut and Rip Saws: Precisely cut panels to order dimensions for length and width.
15. Stacking & Packaging System: Automated stacking, weighing, labeling, and packaging.
Stage 6: Auxiliary & Control Systems
16. Energy Plant (Thermal Oil Heater): Burns production waste (bark, sander dust, trim) to generate thermal energy for the dryer and press, enabling energy self-sufficiency and environmental benefits.
17. Dust Collection & Air Filtration System: Centralized dust collection to ensure a clean production environment.
18. Central Control System (CCS): The brain of the entire production line. A PLC/DCS-based automation control system, integrating online quality inspection (e.g., X-ray thickness gauge, Density Profile Scanner, Metal Detector). It enables real-time production data monitoring, automatic process parameter adjustment, and fault diagnosis.
Equipment Configuration Overview Table
Section | Core Equipment | Key Role |
Raw Material | Heavy-Duty Ring Flaker | Creates premium long strands, forming the "rebar" skeleton |
Drying | High-Efficiency Rotary Drum Dryer | Precisely controls strand moisture content, ensuring bonding quality |
Blending | PMDI High-Pressure Blending System | Enables high-strength chemical bonding, forming the "super-concrete" |
Forming | Continuous Oriented Former | Constructs the "longitudinal-transverse-longitudinal" 3-layer oriented stress-dispersion structure |
Pressing | High-Tonnage Continuous Flat Die Press | Achieves high-density, homogeneous curing under high pressure |
Finishing | High-Precision Calibrating Sander | Guarantees final product thickness accuracy and surface flatness |
Full System | Central Control System & Online Inspection | Ensures stable, precise, and quality-controlled operation throughout the process |
This production process is specifically designed for manufacturing high-density, high-internal-bond "Superior Nail Holding OSB". It builds upon standard OSB processes by reinforcing four key stages—raw material preparation, forming, blending, and pressing—to achieve exceptional mechanical properties in the final product.
Stage 1: Raw Material Preparation
Log Handling: Long logs (e.g., poplar, pine) are debarked using a debarker. Bark removal is critical as bark adversely affects bond strength.
Strand Preparation (Key Step): Logs are fed into a Ring Flaker, which cuts them into uniform, narrow, thin strands (typically 75-100mm long, 0.4-0.7mm thick). Longer strands create a more continuous and robust "fiber network" within the panel, providing the physical foundation for high nail holding power.
Screening & Drying: Strands pass through multi-deck screens to be precisely separated into surface layer fines and core layer coarse material. They then enter a Rotary Drum Dryer, where moisture content is reduced from about 40-60% to a precise 2-4% under controlled temperature. Precise moisture control is crucial for uniform resin distribution and effective hot pressing later.
Stage 2: Blending & Mat Forming
Blending (Core Process): Dried surface and core strands enter separate High-Pressure Blending Machines. High-performance PMDI/MDI resin (not traditional formaldehyde-based resins) is applied via precise dosing and high-speed mixing to ensure each strand is uniformly coated. MDI resin forms irreversible chemical cross-links with wood fibers, creating a bond stronger than the wood itself.
Forming (Structural Key): Resinated strands are conveyed to the Continuous Oriented Former. This is the heart of creating the "3-layer oriented structure":
1. Bottom Layer: Fine, long surface strands are oriented parallel to the production line direction (longitudinal).
2. Core Layer: Larger core strands are oriented perpendicular to the line direction (transverse).
3. Top Layer: Longitudinal surface strands are laid again.
Purpose: This "cross-oriented" (longitudinal-transverse-longitudinal) structure balances panel strength in both directions and effectively distributes the stress from screw insertion across a wider network of strands, significantly enhancing edge holding power and resistance to splitting.
Stage 3: Hot Pressing & Curing (Performance-Defining Stage)
Pre-pressing & Feed: The loose mat is first lightly compacted by a pre-press to gain handling strength, then fed smoothly into the Continuous Flat Die Press.
Continuous Hot Pressing (Core Equipment): The mat passes through a long (tens of meters) heated-platen zone under high temperature (200-220°C) and extremely high pressure (significantly higher than for standard OSB). The process has three phases:
1. Closing & Compaction: Rapid compression to target thickness at the entry, initiating MDI resin flow and penetration.
2. Curing Under Pressure: Maintaining constant high pressure and temperature allows rapid polymerization of MDI resin with wood, forming strong chemical bonds.
3. Stress Relief: Gradual pressure reduction allows internal stresses to relax, minimizing deformation.
Result: Under sustained high pressure, strands are compacted densely, allowing precise density control in the high range of 700-750 kg/m³, resulting in an extremely compact and uniform internal structure.
Stage 4: Finishing & Quality Control
Cooling & Trimming: The hot panel enters a Star Cooler, where it cools slowly and uniformly under ambient air circulation to stabilize its dimensions and internal structure. Irregular edges are then trimmed off.
Sanding & Cutting: Panels pass through a High-Precision Calibrating Sander (typically 4-6 heads) to remove the pre-cured surface layer and achieve the exact final thickness with tight tolerance (down to ±0.15mm). The smooth, flat surface is also beneficial for end-use. Finally, panels are cross-cut and ripped to order dimensions.
Inspection & Packaging: Panels undergo 100% Online Inspection (X-ray thickness gauge, density profile scanner, automatic weighing) and are automatically graded based on thickness, density, and weight. Qualified products are labeled, packaged, and sent to storage.
Creating a "rebar" skeleton from premium long strands → Forming a "super-concrete" bond strength using MDI resin → Building a "stress-dispersion network" via 3-layer oriented forming → Manufacturing a "high-density, homogeneous structure" via the extreme pressure of continuous pressing. These four interlinked stages work in concert to ensure the final OSB product delivers exceptional nail holding power and structural strength.
The High Nail-Holding OSB from this line is a revolutionary material for:
Construction: Film-faced plywood for concrete formwork (including high-rise), offering high reusability with minimal edge damage at nail holes.
Logistics & Storage: Heavy-duty four-way pallets, large crate decking, with robust connections that withstand frequent forklift impact.
Industrial: Warehouse shelving dividers, heavy machinery packaging, providing reliable fastening support.
Special Structures: Temporary stage flooring, RV/container flooring, requiring strong fixing points for external structures.
We provide not just machinery, but performance assurance. We will work with you to define product standards based on your specific applications and ensure, through stable production line processes, that every batch of panels delivers the promised superior nail holding power, helping you build a core competitive advantage in the heavy-duty structural materials market.
Our contacts:
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
