1. Extremely High Production Efficiency & Capacity: Continuous board output eliminates idle time, resulting in production speeds far exceeding those of multi-opening presses. Single-line annual capacity can reach over 200,000 cubic meters, even extending to 300,000-500,000 cubic meters.
2. Superior Product Quality:
Exceptional Density Uniformity: The continuous pressing action and precise thickness control system ensure minimal density variation along and across the board.
Perfect Surface Quality: The board surface is smooth and flat, requiring minimal sanding, providing an ideal substrate for subsequent laminating, printing, and other finishing processes.
Excellent Internal Properties: Physical and mechanical properties (like Modulus of Rupture and Internal Bond strength) are higher and more consistent.
3. Significant Energy & Resource Savings:
Low Thermal Energy Consumption: The closed press platen design ensures high thermal efficiency; advanced heat recovery systems (e.g., using thermal oil and steam jointly) can be implemented.
Low Electrical Consumption: The main drive motor operates at a relatively stable power level, avoiding the peak currents associated with the frequent opening/closing of multi-opening presses.
Low Raw Material Consumption: Precise forming and stable thickness control reduce the sanding allowance, increasing material yield.
4. High Automation & Intelligence: The entire line is controlled by advanced DCS/PLC systems, integrated with online quality detection (e.g., QCS), enabling real-time process monitoring, automatic adjustment, and fault diagnosis, reducing reliance on skilled operators.
5. High Flexibility: Allows for quick and smooth changes in board thickness during production without stopping, making it ideal for flexible production of multiple specifications and small batches.
1. Raw Material Preparation Section:
Chipping: Raw materials like small-diameter logs, branches, and wood residues are cut into uniform wood chips.
Washing & Screening: Removes impurities (sand, metals) from the chips and screens for accept chips.
2. Fiber Preparation Section (Defibration):
Chip Pre-steaming: Chips are steamed in a preheating bin to soften them.
Defibration in Refiner: Softened chips are fed into a Refiner, where they are separated into individual wood fibers under high temperature and pressure. This is a core process in MDF production.
Resin Blending & Drying: In the pipeline after refining, resin (typically Urea-Formaldehyde UF or Melamine-Urea-Formaldehyde MUF), wax, and other additives are uniformly applied to the fibers via a Blowing Line Blender. The fibers are then rapidly dried to 8%-12% moisture content in a Pneumatic Dryer using hot air.
3. Forming Section:
Fiber Forming: Dried fibers are distributed through a Forming Station (often air forming or mechanical forming) to create a uniform, loose mat on a moving conveyor.
Pre-pressing & Scanning: The mat is first lightly compacted by a Pre-press to gain strength for handling. It then passes through online scanners (e.g., microwave moisture gauges, X-ray density gauges) that detect mat uniformity and weight, providing feedback for automatic adjustment of the former.
4. Pressing & Curing Section (Core Section):
Continuous Hot Pressing: This is the "heart" of the entire line. The pre-pressed mat enters the Continuous Flat Press. The press, comprising dozens or even hundreds of cylinders, applies segmented pressure (high-pressure section, breathing section, curing section) and precise temperature control. This cures the resin as the mat travels continuously between the steel belts, forming a solid board.
Trimming & Cutting: The continuous board exiting the press is cooled on a Cooling and Turnover Device and then cut to required sizes by Cross-Cut and Rip Saws.
5. Finishing Section:
Sanding: The boards are calibrated to precise thickness and finished to a smooth surface using a Multi-Head Wide-Belt Sander.
Stacking & Packaging: The sanded boards are automatically stacked by a Stacker, inspected, and packaged.
I. Raw Material Preparation Section
The purpose of this section is to process raw materials into qualified wood chips.
1. Debarker: Used to remove bark from logs, as bark affects bonding performance and panel appearance.
2. Chipper: Cuts logs, small-diameter wood, or wood processing residues into wood chips that meet process specifications.
3. Chip Screen: A vibrating screen used to screen chips, separating oversized chips (returned for re-chipping) and fine particles.
4. Chip Bin/Silo: Large storage equipment for storing and buffering wood chips, ensuring continuous and stable feeding for subsequent processes.
5. Magnetic Separator/Metal Detector: Installed on the conveyor line to remove metal impurities from the chips, protecting downstream equipment (especially the refiner).
wood chipping machine
scraper conveyor
II. Fiber Preparation Section
This is one of the core sections of MDF production, aiming to separate wood chips into fibers and apply resin.
1. Chip Preheating Bin: Chips are preheated and softened by low-pressure steam here, reducing subsequent refining energy consumption and improving fiber quality.
2. Refiner: The most critical equipment in this section. Separates softened wood chips into individual wood fibers under high temperature and pressure between the grinding discs.
3. Resin Blending System:
Resin Preparation System: For the storage, preparation, and maturation of adhesives like Urea-Formaldehyde resin.
Wax System: Provides the waterproofing agent.
Resin Application Unit (Blowline Blender): Located in the discharge pipeline after the refiner, it precisely and uniformly sprays resin, wax, etc., onto the dispersed fibers.
4. Fiber Dryer: Typically a Pneumatic (or Flash) Tube Dryer. Wet fibers are blown into a long tube by high-temperature hot air and rapidly dried to a suitable moisture content (typically 8%-12%) during suspension transport.
5. Fiber Screening and Pneumatic Conveying System: Dried fibers pass through screens to remove resin lumps and large fiber bundles, then are conveyed via a pneumatic system to the dry fiber bin before forming.
defibrator
glue mixer
fiber drying machine
MDF vibrating screen
III. Forming Section
The purpose of this section is to form the dried fibers into a uniform mat.
1. Dry Fiber Bin: Used to store resinated and dried fibers, providing buffering and stabilization.
2. Forming Station/Former: Key equipment determining mat uniformity. There are two main types:
Mechanical Former: Uses spreading and scattering rolls for forming, suitable for producing thicker boards.
Air Forming Station: Utilizes aerodynamic principles, allowing fibers to settle uniformly under vacuum. It offers extremely high forming precision and a very smooth mat surface, making it the preferred choice for high-end MDF production.
3. Pre-press: Initially compacts the fluffy fiber mat to increase its strength and density, forming a coherent "mat blanket" for easier transport and to reduce shock when entering the hot press.
4. Mat Scanning System:
Online Weighing Scale/X-ray Scanner: Continuously detects the weight per unit area of the mat and provides feedback to the former to adjust the furnish amount.
Metal Detector: Ensures the mat entering the press is free of metal, protecting the expensive continuous press.
mat forming machine
pre press
IV. Hot Pressing and Curing Section
This is the "heart" of the entire production line, determining the final board quality and output.
1. Continuous Flat Press: The core and most valuable equipment of the production line. Its main structures and features include:
Steel Belt System: Two endless, heat-resistant steel belts that carry the mat continuously through the press.
Heated Platen System: Dozens to hundreds of heated platens form the long press body, providing high temperature (typically 180-220°C).
Hydraulic System: Comprises numerous hydraulic cylinders applying the required pressure through segmented pressing technology (High-pressure section, Breathing/Venting section, Curing section).
Thickness Control System: Ensures minimal board thickness deviation through precise servo-valves controlling the gap in different press zones.
Heating System: A large thermal oil heater or steam system providing a stable heat source for the press.
2. Mat Feed and Discharge Unit: Gently feeds the pre-pressed mat into the steel belts and leads the continuous pressed board out of the press.
V. Finishing Section
This section performs precision processing on the pressed boards.
1. Cooling and Turnover Device: Cools the hot boards (approx. 80-100°C) exiting the press by forced air and turns them over to ensure uniform cooling and setting, preventing warpage.
2. Edge Trimmer and Cross-Cut/Rip Saws:
Edge Trimmer: Saws off the uneven edges of the board ribbon.
Cross-Cut and Rip Saws: Automatically cut the continuous board ribbon into required sizes according to order specifications.
3. Intermediate Storage System (Optional): Automated storage and retrieval system (ASRS) for storing unsanded boards, providing buffering and flexible connection between the sanding line and the main line.
4. Sanding Line: Core equipment for adding product value. Typically a Multi-Head Wide-Belt Sander (e.g., 4-head, 6-head), performing thickness calibration and surface finishing to ensure thickness tolerance and surface smoothness meet standards.
5. Stacker: Fully automatic equipment that stacks the finished or sanded boards neatly according to preset requirements.
6. Packaging System: Automatically or semi-automatically wraps, straps, or stretch-wraps the stacks to form the final product.
continuous hot press
edge trimming machine
sander
VI. Central Control System
1. Distributed Control System / Programmable Logic Controllers: Provides centralized control and interlocking for the entire line, enabling automated production.
2. Quality Control System: Integrates data from online scanners to adjust process parameters in real-time, ensuring stable product quality.
3. Human-Machine Interface: Allows monitoring and operation of the entire process from the central control room.
The Continuous Flat Press MDF production line is a technologically intensive, highly integrated large-scale system. Its core competitive advantage stems from the high-quality fibers provided by the Refiner, the uniform mat formed by the Forming Station, and the high efficiency, superior quality, and low energy consumption delivered by the Continuous Flat Press. This set of equipment is the cornerstone for building modern, large-scale MDF plants.
The high-quality MDF produced by this line is widely used in:
Furniture Manufacturing: As substrate for panel furniture.
Interior Decoration & Construction: For laminate flooring, door skins, partitions, skirting boards, etc.
Audio Equipment: As enclosures for speakers.
Crafts & Display Shelving: Easy to machine and shape.
We provide comprehensive services from planning and design, equipment manufacturing, to installation and commissioning, along with customized solutions.
Our contacts:
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
1. Extremely High Production Efficiency & Capacity: Continuous board output eliminates idle time, resulting in production speeds far exceeding those of multi-opening presses. Single-line annual capacity can reach over 200,000 cubic meters, even extending to 300,000-500,000 cubic meters.
2. Superior Product Quality:
Exceptional Density Uniformity: The continuous pressing action and precise thickness control system ensure minimal density variation along and across the board.
Perfect Surface Quality: The board surface is smooth and flat, requiring minimal sanding, providing an ideal substrate for subsequent laminating, printing, and other finishing processes.
Excellent Internal Properties: Physical and mechanical properties (like Modulus of Rupture and Internal Bond strength) are higher and more consistent.
3. Significant Energy & Resource Savings:
Low Thermal Energy Consumption: The closed press platen design ensures high thermal efficiency; advanced heat recovery systems (e.g., using thermal oil and steam jointly) can be implemented.
Low Electrical Consumption: The main drive motor operates at a relatively stable power level, avoiding the peak currents associated with the frequent opening/closing of multi-opening presses.
Low Raw Material Consumption: Precise forming and stable thickness control reduce the sanding allowance, increasing material yield.
4. High Automation & Intelligence: The entire line is controlled by advanced DCS/PLC systems, integrated with online quality detection (e.g., QCS), enabling real-time process monitoring, automatic adjustment, and fault diagnosis, reducing reliance on skilled operators.
5. High Flexibility: Allows for quick and smooth changes in board thickness during production without stopping, making it ideal for flexible production of multiple specifications and small batches.
1. Raw Material Preparation Section:
Chipping: Raw materials like small-diameter logs, branches, and wood residues are cut into uniform wood chips.
Washing & Screening: Removes impurities (sand, metals) from the chips and screens for accept chips.
2. Fiber Preparation Section (Defibration):
Chip Pre-steaming: Chips are steamed in a preheating bin to soften them.
Defibration in Refiner: Softened chips are fed into a Refiner, where they are separated into individual wood fibers under high temperature and pressure. This is a core process in MDF production.
Resin Blending & Drying: In the pipeline after refining, resin (typically Urea-Formaldehyde UF or Melamine-Urea-Formaldehyde MUF), wax, and other additives are uniformly applied to the fibers via a Blowing Line Blender. The fibers are then rapidly dried to 8%-12% moisture content in a Pneumatic Dryer using hot air.
3. Forming Section:
Fiber Forming: Dried fibers are distributed through a Forming Station (often air forming or mechanical forming) to create a uniform, loose mat on a moving conveyor.
Pre-pressing & Scanning: The mat is first lightly compacted by a Pre-press to gain strength for handling. It then passes through online scanners (e.g., microwave moisture gauges, X-ray density gauges) that detect mat uniformity and weight, providing feedback for automatic adjustment of the former.
4. Pressing & Curing Section (Core Section):
Continuous Hot Pressing: This is the "heart" of the entire line. The pre-pressed mat enters the Continuous Flat Press. The press, comprising dozens or even hundreds of cylinders, applies segmented pressure (high-pressure section, breathing section, curing section) and precise temperature control. This cures the resin as the mat travels continuously between the steel belts, forming a solid board.
Trimming & Cutting: The continuous board exiting the press is cooled on a Cooling and Turnover Device and then cut to required sizes by Cross-Cut and Rip Saws.
5. Finishing Section:
Sanding: The boards are calibrated to precise thickness and finished to a smooth surface using a Multi-Head Wide-Belt Sander.
Stacking & Packaging: The sanded boards are automatically stacked by a Stacker, inspected, and packaged.
I. Raw Material Preparation Section
The purpose of this section is to process raw materials into qualified wood chips.
1. Debarker: Used to remove bark from logs, as bark affects bonding performance and panel appearance.
2. Chipper: Cuts logs, small-diameter wood, or wood processing residues into wood chips that meet process specifications.
3. Chip Screen: A vibrating screen used to screen chips, separating oversized chips (returned for re-chipping) and fine particles.
4. Chip Bin/Silo: Large storage equipment for storing and buffering wood chips, ensuring continuous and stable feeding for subsequent processes.
5. Magnetic Separator/Metal Detector: Installed on the conveyor line to remove metal impurities from the chips, protecting downstream equipment (especially the refiner).
wood chipping machine
scraper conveyor
II. Fiber Preparation Section
This is one of the core sections of MDF production, aiming to separate wood chips into fibers and apply resin.
1. Chip Preheating Bin: Chips are preheated and softened by low-pressure steam here, reducing subsequent refining energy consumption and improving fiber quality.
2. Refiner: The most critical equipment in this section. Separates softened wood chips into individual wood fibers under high temperature and pressure between the grinding discs.
3. Resin Blending System:
Resin Preparation System: For the storage, preparation, and maturation of adhesives like Urea-Formaldehyde resin.
Wax System: Provides the waterproofing agent.
Resin Application Unit (Blowline Blender): Located in the discharge pipeline after the refiner, it precisely and uniformly sprays resin, wax, etc., onto the dispersed fibers.
4. Fiber Dryer: Typically a Pneumatic (or Flash) Tube Dryer. Wet fibers are blown into a long tube by high-temperature hot air and rapidly dried to a suitable moisture content (typically 8%-12%) during suspension transport.
5. Fiber Screening and Pneumatic Conveying System: Dried fibers pass through screens to remove resin lumps and large fiber bundles, then are conveyed via a pneumatic system to the dry fiber bin before forming.
defibrator
glue mixer
fiber drying machine
MDF vibrating screen
III. Forming Section
The purpose of this section is to form the dried fibers into a uniform mat.
1. Dry Fiber Bin: Used to store resinated and dried fibers, providing buffering and stabilization.
2. Forming Station/Former: Key equipment determining mat uniformity. There are two main types:
Mechanical Former: Uses spreading and scattering rolls for forming, suitable for producing thicker boards.
Air Forming Station: Utilizes aerodynamic principles, allowing fibers to settle uniformly under vacuum. It offers extremely high forming precision and a very smooth mat surface, making it the preferred choice for high-end MDF production.
3. Pre-press: Initially compacts the fluffy fiber mat to increase its strength and density, forming a coherent "mat blanket" for easier transport and to reduce shock when entering the hot press.
4. Mat Scanning System:
Online Weighing Scale/X-ray Scanner: Continuously detects the weight per unit area of the mat and provides feedback to the former to adjust the furnish amount.
Metal Detector: Ensures the mat entering the press is free of metal, protecting the expensive continuous press.
mat forming machine
pre press
IV. Hot Pressing and Curing Section
This is the "heart" of the entire production line, determining the final board quality and output.
1. Continuous Flat Press: The core and most valuable equipment of the production line. Its main structures and features include:
Steel Belt System: Two endless, heat-resistant steel belts that carry the mat continuously through the press.
Heated Platen System: Dozens to hundreds of heated platens form the long press body, providing high temperature (typically 180-220°C).
Hydraulic System: Comprises numerous hydraulic cylinders applying the required pressure through segmented pressing technology (High-pressure section, Breathing/Venting section, Curing section).
Thickness Control System: Ensures minimal board thickness deviation through precise servo-valves controlling the gap in different press zones.
Heating System: A large thermal oil heater or steam system providing a stable heat source for the press.
2. Mat Feed and Discharge Unit: Gently feeds the pre-pressed mat into the steel belts and leads the continuous pressed board out of the press.
V. Finishing Section
This section performs precision processing on the pressed boards.
1. Cooling and Turnover Device: Cools the hot boards (approx. 80-100°C) exiting the press by forced air and turns them over to ensure uniform cooling and setting, preventing warpage.
2. Edge Trimmer and Cross-Cut/Rip Saws:
Edge Trimmer: Saws off the uneven edges of the board ribbon.
Cross-Cut and Rip Saws: Automatically cut the continuous board ribbon into required sizes according to order specifications.
3. Intermediate Storage System (Optional): Automated storage and retrieval system (ASRS) for storing unsanded boards, providing buffering and flexible connection between the sanding line and the main line.
4. Sanding Line: Core equipment for adding product value. Typically a Multi-Head Wide-Belt Sander (e.g., 4-head, 6-head), performing thickness calibration and surface finishing to ensure thickness tolerance and surface smoothness meet standards.
5. Stacker: Fully automatic equipment that stacks the finished or sanded boards neatly according to preset requirements.
6. Packaging System: Automatically or semi-automatically wraps, straps, or stretch-wraps the stacks to form the final product.
continuous hot press
edge trimming machine
sander
VI. Central Control System
1. Distributed Control System / Programmable Logic Controllers: Provides centralized control and interlocking for the entire line, enabling automated production.
2. Quality Control System: Integrates data from online scanners to adjust process parameters in real-time, ensuring stable product quality.
3. Human-Machine Interface: Allows monitoring and operation of the entire process from the central control room.
The Continuous Flat Press MDF production line is a technologically intensive, highly integrated large-scale system. Its core competitive advantage stems from the high-quality fibers provided by the Refiner, the uniform mat formed by the Forming Station, and the high efficiency, superior quality, and low energy consumption delivered by the Continuous Flat Press. This set of equipment is the cornerstone for building modern, large-scale MDF plants.
The high-quality MDF produced by this line is widely used in:
Furniture Manufacturing: As substrate for panel furniture.
Interior Decoration & Construction: For laminate flooring, door skins, partitions, skirting boards, etc.
Audio Equipment: As enclosures for speakers.
Crafts & Display Shelving: Easy to machine and shape.
We provide comprehensive services from planning and design, equipment manufacturing, to installation and commissioning, along with customized solutions.
Our contacts:
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
