Select your problem as below
This occurs when the undercoat absorbs the enamel above causing a loss of brilliance of the enamel.
Blistering can be seen as bubbles of varying size and density. Very often it is accompanied by a detachment of the paint film from the piece or between one coat and another. This phenomenon is visible after exposure outdoors or after laboratory simulation tests (salt spray and humidity).
This can be seen as craters or spikes and may occur in air dried and oven dried products.
This is produced by poor spreading of the film applied.
When the drying time and handling time is longer than normal.
This occurs when the paint film becomes opaque during drying without having been exposed to severe conditions.
This occurs particularly with synthetic products that dry in air.
A coat of paint detaches from the piece or an undercoat.
This may occur obviously during application with electrostatic systems and is noticeable when there is poor covering, with a wastage of paint or a blow back of powder towards the operator or application machine.
This may occur during or immediately after in the drying phase.
The colour of the piece shows through even though the thickness applied is sufficient.
This appears in the form of small "craters" which open and uncover the surface underneath or undercoat. Usually they become visible during application or immediately after.
this occurs when powder is deposited on another powder layer without being absorbed by it. The consequence is a loss of aesthetic quality of the film.
This occurs when the quantity of product used is greater than the standard amount.
Skin forms on products when the surface dries in contact with the air.
It is almost always possible to use the product after removing the layer of skin and filtering the rest of the product just to be sure that no skin remains.
If the paint is not to be used, remove the skin and pour a layer of thinner gently over the surface without stirring.
The differing specific weights of the paint components makes sedimentation almost inevitable; it is important that the bottom layer can be mixed back into the rest of the product.
It is important to make sure that there really is an error, avoiding judgements made on the product without mixing and applying the paint properly.
In these cases it is important to make sure that the paint is not thickened to the point of being unusable (livering); the usual cause is storage at excessively high temperatures.
Film more opaque than expected or discoloured.
Presence of small bodies, lumps or other coarse particles.
Poor covering with the formation of pitting
Poor fluidisation of the powder in the container.
Irregular powder feed with asymmetrical delivery.
Insufficient covering of the pieces by the powder.
Poor penetration of cavities and corners (Faraday cage effect)
Excess powder in the recovery container
Spray cabin covered in powder and insufficient air circulation.
Presence of cavities in the surface layer of the powder in the container.
Separation of the powder into two layers (fine and coarse powder)
Appearance of more opaque or discoloured stains on the surface.
Film shrinkage on corners with poor coverage of the surface.
Penetration of the cavities by the powder and corners insufficient.
Powder not adhering to the pieces or powder falling off them easily.