When is the best time to sand surfaces?; There are always various ideas about when to sand the surfaces in painting process: should it before the start of the painting process or should it be after the painting process? Actually, the correct answer for this question is hidden inside your process.
While sanding wooden surfaces is considered absolutely necessary before painting, today there are also applications where painting can be done without sanding for some surfaces. On metal surfaces, painting without sanding is more common than painting with sanding.
In professional painting processes, sanding is done to remove surface anomalies on the furniture panel and for more perfect painting results.
Sanding is also done on wooden surfaces if the application surface is painted prior to the process or when polishing remover liquids do not provide efficient performance.
In addition to that, while painting carved surfaces, homogeneous sanding, taking into account the isohyptic structure of the surface, is a necessity for professional applications. Especially on carved wooden surfaces, Kama Makina’s YZM series is the professional solution partner for sanding carved surfaces. In regard to special sanding solutions for isohyptic differences and carved surfaces, TZM series offer qualified finishing.
On some wooden and metal surfaces, surface treatment begins with primer paint. Sanding the wooden surfaces that have been primed will provide perfect painting or lacquering surfaces prior to the finishing layer application.
Moreover, sanding the surface is the main factor of success in some paint applications such as, lacquer painting applications. Lacquer painting machines are the most important applications of this type. Achieving a perfect finish when obtaining a shiny surface in lacquer paint and polish applications is not a choice, it is a necessity. Considering today’s interior decoration trends in mind, the usage frequency of lacquered surfaces is increasing day by day. So, sanding is a necessity for the lacquer painted surface treatments.
Considering the factors we have listed, manufacturers should bear in mind 7 points while using a lacquer painting machine:
- Sand the surface on which you will apply the primer painting before you apply it. You can clean the surface quickly with automatic brush sanding machines.
- After applying the primer, sand the part again to eliminate the appearance of droplets and stains on the dried pieces.
- Choose the paint to be applied according to the primer base you use. This selection is necessary for the paint layers to bond perfectly to the surface and to each other. Paint and primer layers with incompatible bases cause blistering, cracking and vomiting on the surface.
- Apply the paint with a spray painting machine. For homogeneous application, choose the machine suitable for your surface treatment. Choose double-arm options for large panels and edge painting machines for edge painting. If you are processing materials such as MDF that require filling and your application area is narrow (such as moldings, skirting boards), choose UV filling machines and ensure that the material is filled before starting the surface treatment. Today, edge UV machines offer the solutions you are looking for for such applications.
- After the paint application, sand the paint surface to perfect it. After the process, apply your second coat of paint.
- After the second coat of paint application, you can complete your process with UV dryers. UV dryers could help you to produce rapid pieces and helps your manufacturing system to speed-up.
- You can apply the final coat to the finished parts after coming out of the UV dryer by spraying them in automatic lacquer polishing machines. Thus, you get a flawless and shiny surface.
You can contact us to participate in the Ka-Ma Application days, which will be organized to learn the tricks of paint application processes and the ease of use of automatic lacquer painting machines.
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