Orange peel atau ngabut

when the surface finishing result looks like a wavy or rough surfaces such as the orange peel defect / flaw called 'Orange Peel' as a physical defect is visible. The most easily visible on a flat surface (flat) because the surface with this defect will not produce a good effect of light reflection (on the finishing type melamik).

Orange peel is caused by three major aspects of temperature & humidity, viscosity and thickness of the layer of finishing material during the spray process.

As a measure of whether or not a liquid and finishing materials were measured using a special measuring tube per second speed scale material flow. TentangKayu've been writing about the viscosity at the previous time. If the viscosity is too low, which means the material is too thick then we have the risk of orange peel, although the air temperature is hot enough.

From here the importance of finishing regulate viscosity materials you'll use before finishing applications. Tolerance for the best viscosity is 0%. Why? lower if we could save the finishing materials but also has the risk of finishing another defect, namely the bubble spot
This is also why the average finishing professionals set the viscosity top coat (the final layer) with lower viscosity.

Temperature and Humidity
One part of the finishing materials are materials that are often referred to as solvent or thinner. And now there are thinner paint thinner or water made of (waterbased lacquer).
These solvents, because of its very volatile, will evaporate also when the finishing material is sprayed into the work piece so that it will leave a resin or the main ingredient on the surface finishing workpieces. Evaporation speed is what affects the quality of surface finishing. Orange peel is caused due to evaporation is too slow and that affects most is the speed of evaporation temperature. Hence, in some large furniture company, mainly producing 'flat furniture' has a special drying room to adjust the speed of drying finishing as required.
More than that we need to keep the humidity around the object being dried. The air is too humid not have the 'space' to accommodate such evaporation.


Apply finishing with multiple layers must be kept the time interval. The second surface is only done when the first layer solventnya enough time to release into the air. so did the process for the next layer. Materials that have been piling did not have time to spread to the entire surface evenly but have been covered up and arrested his movement by the next layer to form the orange peel.

In addition to three main points mentioned above there are some things that played a role in the process of formation of orange peel from the compressor air pressure is too low Stirring finishing materials are not truly equal size 'Nozzle' on the spray gun that is not quite right (too small)

Prevention and Correction Action
Try to review the spraying process that you normally do. Distance spray gun with an ideal head workpiece is between 18-23 cm with a certain speed. Keep the spray gun head angle was always perpendicular to the surface tends to be sprayed.
Routine is important that MUST ALWAYS be done is to try to spray gun at another workpiece to measure and see the results early so that if the risk of errors or defects will not occur in primary workpiece. And very important that this testing should be done every time we replace a new finishing materials or before adding new material.

When the orange peel that had already incurred the best way is to peel the surface finishing until exhausted, until the wood surface finished to terkihat just as before. Only partial thickness sanding is not recommended.
However, there are several types of finishing that is designed to produce a surface like orange peel. In this case we are discussing finishing melamik who need the results as smooth ceramic surface


Orange peel problems are faced when the rainy season tiba.dalam diperlukjan practice materials to avoid Retader ngabut by adding a function to accelerate evaporation.

Categories: Finishing