This production line represents the pinnacle of modern wood-based panel manufacturing technology, with its core indicator being an exceptionally high line speed of 1200 mm/min. This far surpasses the speed of traditional continuous presses (typically operating at 600-900 mm/min), meaning the press can produce 20 mm of finished panel every second, elevating MDF production efficiency to an unprecedented level.

Workflow of the High-Speed MDF Continuous Press Production Line

Its workflow represents the ultimate compression and optimization of the traditional hot-pressing process. The entire operation functions like an "industrial highway," achieving uninterrupted, continuous production. The specific workflow is as follows:

1.  Fiber Preparation & Blending: Dry wood fibers are uniformly and rapidly mixed with resin, wax, etc., in a large blender. This is the foundation for ensuring product quality.

2.  Fiber Metering & Forming (Core Pre-treatment):

      The resinated fibers are fed into a high-speed forming machine. This is a key prerequisite for achieving the 1200 mm/min line speed.

      The former must distribute the fibers evenly and flatly onto the moving conveyor belt at high speed, creating an endless, continuous "fiber mat" with extremely uniform density distribution. Any inconsistency will be amplified in the high-speed press, leading to product defects.

3.  Mat Pre-pressing & Online Detection:

      The loose mat first passes through a pre-press, where it is lightly compressed to gain strength, allowing it to enter the main press stably without being damaged.

      An online density scanner is typically integrated here to detect the mat's density profile in real-time and feed the data to the main press control system for pre-emptive pressure adjustment.

4.  Continuous Hot Pressing & Curing (Core Section):

      The pre-pressed mat enters the continuous hot press, gripped between two massive, high-temperature steel belts, and passes at a constant speed of 1200 mm/min through the tens-of-meters-long heating and pressing zone.

      Infeed Zone: Applies the highest pressure to instantly compress the mat to the target thickness.

      Main Press Zone: The mat passes through rapidly under high temperature and precisely zoned controlled pressure. Heat transfers rapidly to melt and cure the resin. The extremely short transit time places extremely high demands on heat transfer efficiency and temperature control.

      Outfeed Zone: Pressure is gradually reduced in steps, allowing the cured panel to release stress smoothly and prevent deformation.

5.  Cooling & Setting:

      Panels exiting the press are very hot and must undergo forced cooling immediately. This process allows the resin to fully set, giving the panels stable physical properties and dimensions, preventing later warping.

6.  Length Cutting & Trimming:

      The cooled continuous panel is precisely cut into individual boards of required lengths and the irregular edges are trimmed off by high-speed synchronized saws. All cutting actions must be performed at high speed and in perfect synchronization with the production line.

7.  Automatic Stacking & Storage:

      Cut boards are conveyed to a fully automatic stacker, which stacks them into neat piles according to preset counts. Finally, forklifts transport the stacks to storage or for direct shipment.

Main Components of the High-Speed MDF Continuous Press Production Line

This production line is a massive complex composed of multiple subsystems, primarily including:

1. Raw Material Handling & Forming System

  Core Equipment: Forming Machine, Pre-press, Mat Scale, Online Density Detection System.

  Function & Requirements: Responsible for creating a uniform, continuous mat. For high speed, the former must be a mechanical-airflow type or the most advanced mechanical-scanner type to ensure perfect formation even at 1200 mm/min.

mat forming machine

pre press machine

2. Continuous Hot Press - The Heart of the System

 Frame: A massive steel structure providing strength and rigidity.

  Steel Belt System: Two endless high-strength alloy steel belts responsible for gripping and pulling the mat. Requires high-efficiency tensioning and steering systems to prevent misalignment at high speed.

  Heating System:

      Heating Platens: With internal channels for high-temperature thermal oil.

      Thermal Oil Unit: Provides a stable, high-temperature heat source.

  Hydraulic System:

      Multiple Hydraulic Cylinder Groups: Divided into many pressure zones for "precision micro-management" of the mat.

      High-Pressure, High-Flow Pump Station: Provides rapidly responsive pressure.

  Drive System: High-power servo motors and reducers that drive the steel belts stably at 1200 mm/min.

3. Conveying System

  Connects the entire production line, including various conveying rollers, belt conveyors, etc., ensuring smooth and synchronized material flow.

4. Cooling & Flipping System

  Core Equipment: Cooling Star (usually multi-tiered), Flipper.

  Function: Cools the panels rapidly to near room temperature and flips them for two-sided quality inspection or to suit downstream processes.

5. Sawing & Stacking System

  Core Equipment: Tracking Saw, Cross-Cut Saw, Edge Trim Saw, Stacker.

  Function & Requirements: Performs length cutting, edge trimming, and automatic stacking. The sawing system must have high-speed synchronization capability; the stacker must operate quickly and accurately.

6. Central Control System - The Brain of the System

  Core Equipment: PLC, Industrial Computer, HMI, Sensor Network.

  Function: This is the soul enabling stable high-speed operation at 1200 mm/min. It collects thousands of data points in real-time and makes millisecond-level adjustments to:

      Speed Synchronization: Ensures consistent speed from forming to stacking.

      Temperature Control: Precisely controls the temperature of each heating zone.

      Pressure Control: Adjusts the pressure in each zone in real-time based on mat density and feed-forward signals.

      Fault Diagnosis & Alarm: Ensures equipment and personal safety.

What Does 1200 mm/min Mean?

To understand its advancement, a simple capacity calculation can be performed:

  Assumptions: Standard finished panel thickness of 18 mm, effective line width of 8 feet (2440 mm).

  Output per Minute: 1.2 m/min (line speed) × 2.44 m (width) × 0.018 m (thickness) ≈ 0.0526 m³/min.

  Output per Hour: 0.0526 × 60 ≈ 3.16 m³/hour.

  Daily Output (based on 22 hours): 3.16 × 22 ≈ 69.5 m³.

A single production line can achieve a daily output of approximately 70 cubic meters, with an annual capacity easily exceeding 200,000 cubic meters.

Main Technical Parameters

I. Capacity & Core Performance Parameters

II. Mechanical & Structural Parameters

III. Hydraulic System Parameters

IV. Thermal System Parameters

V. Control & Automation Parameters

VI. Finished Product Quality Parameters

The line is designed to ensure the final product achieves the following quality targets:

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