Orange peel - an unesthetic defect on the paint coating

During spray painting, unesthetic efflorescence, unevenness and changes in the structure of the paint may occur. This is most often due to incorrect preparation of the surface for painting or painting materials, as well as inappropriate painting technique. Paint defects in the form of orange peel are undesirable, especially in industrial painting. So how can you avoid it? What causes such paint defects to appear on painted coatings? Learn about the causes, effects and methods of preventing such unsightly changes to the painted material.

Where does the orange peel on the painted surface come from?

Professional industrial plants using spray painting methods should have access to the highest quality equipment and qualified employees, which reduces the risk of paint defects during production. Unfortunately, it often happens that many professionals have problems with the appearance of orange peel.

The main causes of orange peel on the paint are:

  • lack of precision when pouring subsequent layers of varnish,
  • incorrect viscosity of the paint,
  • lack of skills in spray painting with high-gloss varnish,
  • inappropriate air temperature during painting, pre-evaporation and drying,
  • lack of skills in working with a spray gun,
  • incorrectly selected, usually too low pressure,
  • wrong nozzle in the spray gun

A popular paint defect, i.e. staining on cars

The most common paint defect is the so-called morka, i.e. orange peel. This change means that we will not obtain a perfectly smooth and shiny surface. It happens that even new cars have problems with such production defects related to paintwork. However, to remove dried orange peel on the paint, we must: clean the body, remove the first layer of paint with sandpaper, measure the thickness of the paint coating, smooth the surface, and apply the paint again by spraying. If the skin is very delicate, it is possible to polish the surface.

How to remove orange peel from paint?

Removing unesthetic orange peel from a paint coating, e.g. on a car body, is not particularly difficult. We have described several steps on how to effectively repair a damaged paint coating.

  • Start by using 1000-1200 grit sandpaper. The work should be carried out wet to minimize the risk of damaging the paint.
  • Lightly sand the area with an orange peel effect. Do this evenly so as not to damage the base coat of the varnish.
  • Once most of the orange peel has been removed, use 2000 grit sandpaper to smooth the surface and remove any finer imperfections.
  • If you have access to a polishing machine, you can use it in this step to achieve a more even result.
  • Alternatively, if you don’t have a polishing machine, you can continue working by hand using 1500 grit sandpaper on a hand pad. Remember that this method is more time-consuming and demanding.
  • After thoroughly sanding the paint, use polishing paste to restore the shine of the surface. It is important to apply the paste evenly.
  • When polishing, it is worth using an antistatic cloth to avoid attracting dust and other contaminants.

Removing orange peel on your own can be problematic, so it is better to entrust such tasks to qualified and experienced people.

Paint defects – how to prevent orange peel from appearing on the paint?

The basis is cooperation with a professional industrial painting plant. Additionally, the specialist should follow the recommendations of the paint manufacturer, use professional equipment and have a properly adjusted spray gun. It is also important to properly mix the varnish with the thinner to select the optimal viscosity. This is essential to avoid the risk of orange peel appearing on the paint coating.

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