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Fire Retardant Medium Density Fiberboard Production Line

Name: Fire Retardant Medium Density Fiberboard Production Line
Brand: MINGHUNG
Rating: 5.0 (95 reviews)

This production line is specifically designed to manufacture fire-retardant Medium Density Fiberboard (FR-MDF) by incorporating high-efficiency, eco-friendly flame retardants (halogen-free, low smoke, low toxicity) during the fiber preparation stage. The finished boards self-extinguish when exposed to fire, suppress flame spread, and reduce smoke generation. The line supports additive-type flame-retardant processes (flame retardant mixed with adhesive or applied separately) and can produce FR-MDF complying with international standards. Ideal for public area decoration, hotels, hospitals, schools, transportation vehicles, and export furniture where fire safety is mandatory.


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Model:
MH-MDF
Brand:
MINGHUNG

Product Description

Fire Retardant medium density fiberboard Production Line

MDF production proces

Step 1: Chipping & Preparation

Raw material is chipped into chips; screening and magnetic separation remove impurities.

Step 2: Fiber Preparation

Chips are steamed and softened, then separated into wood fibers by a refiner.

Step 3: Flame Retardant Application

Flame retardant is prepared and uniformly mixed with fibers via a high-pressure spray system, penetrating into the fibers.

Step 4: Gluing & Drying

Adhesive is added to the FR-treated fibers, then dried at a lower temperature in a flash tube dryer to target moisture content.

Step 5: Mat Forming

Dried fibers are formed into a continuous mat with uniform density by a former.

Step 6: Hot Pressing

The mat is pre-pressed and then fed into a hot press, where it cures into a board under optimized temperature and pressure.

Step 7: Cooling & Conditioning

Raw boards are cooled and then conditioned for 48-72 hours to stabilize properties.

Step 8: Sanding & Cutting

Boards are thickness-sanded, cut to standard sizes, inspected, and packaged.

Main Equipment Overview

Chipper

Cuts logs or waste wood into uniform chips. Drum or disc type with a large feed opening suits various raw materials. Replaceable knives ensure consistent chip size.

fiber grinding machine for MDF production line

Refiner

Separates steamed and softened chips into wood fibers. High-power motor with adjustable grinding plate clearance ensures proper fiber length and fineness for flame retardant adhesion.

Wood Based Panel Glue Preparation Focusing on Particleboard MDI Glue UF Glue and PF Glue

Flame Retardant Application System

Consists of a dissolving tank, high-pressure metering pump, and spray unit. Precisely mixes and atomizes flame retardant into fibers for uniform penetration with closed-loop automatic control.

Gluing System

Applies adhesive uniformly to FR-treated fibers. High-precision flow meters and atomizing nozzles achieve ±0.5% gluing accuracy, saving adhesive consumption.

MDF Fiber drying Machine for MDF Production Line

Flash Tube Dryer

Instantly dries glued fibers with hot air. Uses lower temperature (5-10°C below standard MDF) to prevent FR decomposition. Equipped with exhaust gas treatment.

Mat Former

Forms dried fibers into a uniform continuous mat. Mechanical + air-flow design with online density feedback automatically adjusts discharge, ensuring mat density deviation ≤±3%.

MDF OSB CHIPBOARD Continuous Hot Press Machine

Continuous Press or Multi-Opening Press

Cures the mat into MDF board under high temperature and pressure. Optimized temperature curve (5-10°C lower) and extended pressing time (+10-15%) ensure full core curing for FR boards.

MINGHUNG Oriented Strand Board Multi Opening Hot Pressing Machine

Cooling Star Turner

Forces cooling of hot pressed raw boards to room temperature. Chain-plate flipping design with air or water assist ensures even cooling and prevents warping.

Double-sided four-frame sander for MDF production line

Wide Belt Sander

Double-side thickness sanding of conditioned boards. Coarse belt removes loose surface layer; fine belt performs precision calibration. Online thickness gauge provides automatic compensation with ±0.3mm tolerance.

Advantages of This Production Line

1. Uniform and Stable Flame Retardancy

2. Compliance with International Fire Standards

3. Minimal Loss of Mechanical Properties

4. Low Smoke, Low Toxicity, Eco-Friendly Design

5. Specialized Dust & Exhaust Treatment

6. Dual Function: Fast Switching Between FR and Standard MDF Modes

Main Technical Specifications

Parameter	Range / Value
Annual capacity	30,000 - 250,000 m³/year
Board thickness	2.5 - 30 mm (FR boards typically 3-25mm)
Board width	1,220 - 2,600 mm
Board length	2,440 - 5,100 mm
Board density	700 - 880 kg/m³
Flame retardant types	APP, urea phosphate, boric acid-borax complex, halogen-free phosphorus-nitrogen
FR addition rate	8% - 20% of dry fiber weight (depending on target grade)
Formaldehyde emission	E0 grade (≤0.05mg/m³) or NAF (No-Added-Formaldehyde)
Press type	Continuous press (CPS) or multi-opening press