APPENDIX I
Guidance on the calculation of the quantity of VOC applied
The requirement relates to the total VOC in the surface treatment products with the chemical composition they have in the wet form. If the products required dilutions, the calculation is to be based on the content in the diluted product.
This method is based on the application method that calculates the quantities applied per m2 surface area. It determines the content of the organic solvents as a percentage of quantity of the surface treatment applied.
The applied quantity of VOC is calculated using the following formula
The formula consists in:
Table 4.2.
Efficiency of the surface treatments
|
Surface treatment |
Efficiency (%) |
Surface treatment |
Efficiency (%) |
|
Automatic spray application, no recycling |
50 |
Roller coating |
95 |
|
Automatic spray application with recycling |
70 |
Curtain coating |
95 |
|
Spray application, electrostatic |
65 |
Vacuum coating |
95 |
|
Spray application, bell/disc |
80 |
|
|