3.3. The perforator values of MDF panels
The perforator values of MDF panels produced with UF resin added to different concentrations of some amine chemicals to reduce formaldehyde are presented in Fig. 6. It also shows that the perforator values of control panels were acquired without any addition of amine chemical. When the ratio of US chemical increased to 0.4% or higher, it was determined that the US chemical was much more ineffective than other amine chemicals.