Medium Density Fiberboard (MDF)

Medium Density Fiberboard (MDF) manufacturing requires a precise moisture range be present in order to achieve the highest quality product. The quality of the fibers being used to create the board are influenced by the moisture content of the fibers along with adding additonal moisture resin in the process. This creates multiple process interruptions, wasted time, energy and money

Precise control of raw material fiber will not only improve the resin addition but also provide an extra benefit of high quality board properties. The forming line will see major beneifts from moisture control when the press sees zero downtime due to blown boards, which is highly common of improper moisture content. 

Many successful years of moisture control in the wood industry using Near-Infrared technology gives MoistTech the recognition of being the most advanced system available today. 


The IR-3000 MDF Moisture Sensor should be mounted several inches above the conveyor will allow the user to continuously monitor the process and can control the moisture content either manually or automatically in the MDF process.

The unique feature of the IR-3000 is that is able to monitor the process even with small gaps in product flow without impacting the accuracy. Moist Tech has also developed sample systems and optical windows using sapphire optics which will provide a viewing area for real time process measurement. Details of this can be seen on our section in sampling technology.


Dust from the product is not normally a problem however in extreme dusty environments we recommend the installation of an Air Purge System to prevent the accumulation of material on the sensor’s window. If the sensor has to be installed close to dryer outlet where it will be susceptible to extreme heat conditions, it may be necessary to cool the sensor with either air or water.

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Benefits of MDF Moisture Control

Immediate process line benefits can be seen with proper moisture management and control as well as safety improvements. The ability to minimize costs and increase efficiency in the plant is easily achieved with moisture control. Both manufacturers and producers have this forefront of their agenda and knowing where improvements can be made allows for lean operating procedures. 

  • Reduction in Board Fires / Explosions Due to Dust
  • Increased Product Quality
  • Lowered Energy Costs from Proper Dryer Control
  • Reduced Start-up Times
  • Less Waste & Downtime
  • 100% Product Inspection
  • Significant Resin Cost Savings

The MoistTech staff is experienced with the MDF moisture sensing requirements in the medium density fiberboard manufacturing process. Our sensor calibrations, measurement wavelengths, algorithms and sensor optical requirements are pre-set at the factory. Typical accuracy is about ±0.1% moisture. Typical analog range is 0-20% moisture. The outputs can be adjusted to optimize PLC or recording requirements.

Check out our other wood moisture applications to learn more.