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How to brush wood paint? What are the operational steps?
Latest company news about How to brush wood paint? What are the operational steps?

Wood paint is like clothing for wooden furniture. It not only cleverly conceals defects such as insect holes, scars, and color differences on the surface of wood, but also highlights the beautiful texture of the wood, while providing protection for the wood. Now, let's share some experiences on wood painting, and teach everyone how to do a good job in the "face" project of wooden furniture.

Preparation of materials and tools for wood painting
Before painting on wood, various preparations need to be done. The preparation work for wood painting mainly includes material preparation, tool preparation, and working environment. Let's take a look at the preparations that need to be done before painting on wood.

Material preparation
The materials needed for wood painting mainly include wood putty and wood paint. The commonly used wood paints are nitrocellulose lacquer, polyurethane lacquer, and water-based wood paint.

Wood putty can fill and level joints, scars, nail holes, and other defects on the wood surface, saving material and labor when painting wood. It also improves the smoothness of the painted surface and enhances the beauty of the wood surface.

Comparison of main wood paint varieties:

Nitrocellulose lacquer (NC): Good decorative effect, fast drying speed, relatively easy repairs, low solid content, poor durability, gloss retention, and color retention. It has poor environmental protection.

Polyurethane lacquer (PE): Fuller and thicker film, good gloss and transparency, hard and wear-resistant, strong adhesion. Film damage is not easily repaired, slow drying speed, and prone to yellowing.

Water-based wood paint (W): Good environmental protection, no yellowing, excellent water resistance, non-flammable, rust-proof, and high temperature resistance. However, some water-based paints may have relatively low hardness, and the construction environment requirements are relatively high.

Tool preparation
Various tools are needed for wood painting. Commonly used tools include sandpaper, filter screens, paintbrushes, sanding blocks, spray guns, roller brushes, etc.

Sandpaper is used for sanding the wood surface, and filter screens are used to filter impurities in the wood paint. Paintbrushes, spray guns, and other tools can be selected according to different painting methods.

Working environment
Wood painting is a precise and meticulous activity that requires appropriate environmental conditions. Temperature, humidity, lighting, ventilation, and cleanliness all have certain requirements to achieve good paint effects.

Temperature: It is best to work at room temperature (15-30°C). Low temperatures will slow down the film formation of paint, while high temperatures (over 35°C) will adversely affect brushing performance.

Humidity: Avoid humid air, as it is detrimental to most coatings, especially nitrocellulose lacquer and polyurethane lacquer. Working in humid and rainy weather can result in whitening or slow drying.

Lighting: Sufficient lighting helps to see the paint surface clearly, identify whether the coating is evenly applied, and avoid missing brush strokes or runs. Therefore, it is recommended to work in a well-lit room.

Ventilation: The construction site should have ventilation equipment to maintain a proper flow of fresh air. This is not only beneficial for the health of workers and paint film formation but also helps reduce the risk of fire. However, the airflow should not be too fast to avoid affecting the quality of the coating.

Cleanliness: The construction environment must be kept clean. Dust and debris generated during construction should be immediately cleaned up. Otherwise, it will affect the final effect of the paint film. Clean working environment is particularly important for floor paint construction.

Wood painting process
Wood painting can achieve three different effects: closed, semi-closed, and open. Closed effect completely covers the wood grain, while open effect reveals the natural texture of the wood. The painting methods for wood painting differ according to the desired effect.

In addition, there are three main types of wood paint: nitrocellulose lacquer, polyurethane lacquer, and water-based wood paint. Due to the different compositions of these products, the painting methods also vary. There are various painting methods for wood painting, and it is best to choose the appropriate method according to the desired effect and the purchased product. In fact, the differences between various painting methods are not significant; it may be the difference in the order and number of painting layers. Now let's introduce some basic practices for wood painting.

Preparation of wood panels
Before painting, it is necessary to clean the wood, removing dust and other particles from the wood surface. Special dust removal cloths can be used for cleaning, and for large areas such as floors, a vacuum cleaner can be used to repeatedly clean. At the same time, sand the surface of the wood panels or moldings with sandpaper, taking care to protect the veneer and avoiding sand-through.

The purpose of wood panel treatment is to effectively remove stains, wood fibers, and wood splinters from the panel, making the surface clean and smooth, and achieving labor and material savings for subsequent painting.

Panel sealing
Evenly apply specially prepared wood panel sealer to the panels to effectively seal them and prevent contamination.

Panel sealing can prevent excessive moisture absorption, moisture release, and deformation of the panels. It also enhances the adhesion between the paint film and the panels, saves paint usage, and increases the hardness of the paint film.

Application of wood putty
Use matching wood putty and apply it vigorously to fill the wood pores. After the putty is dry, use sandpaper to thoroughly clean the putty on the wood.

Filling the wood pores with putty can reduce the amount of wood paint used and improve the smoothness of the paint film. Different painting effects have different requirements for putty application. For example, to achieve an open effect, the putty color should be consistent with the color of the wood panel before application.

Primer application
Prepare wood primer according to the required ratio, and apply it using brush or spray methods. The purpose of primer application is to fill the wood pores and increase the thickness of the paint film.

During application, after the primer is fully dry, it must be sanded with sandpaper before applying another coat of primer. The requirement is to apply the primer evenly, without runs, and with a smooth surface.

Sanding treatment
Sanding the wood panels is a crucial step throughout the wood painting process. Sanding is required for panel treatment, putty application, primer application, and before and after topcoat application. The sanding process is very important.

Sanding treatment makes the panels smoother, leveler, and more suitable for painting. Sanding after painting also makes the paint film surface even and smooth. However, note that cross-sanding should be avoided during sanding, and excessively rough sandpaper should not be used.

Topcoat application
Before applying the topcoat, the surface of the wooden panels must be cleaned again to remove dust particles, ensuring a better finish. When applying the topcoat, it is not advisable to apply a thick layer at once. It is better to apply multiple layers of coating after the previous coat has dried.

The application of the topcoat directly affects the final effect of the paint film. The topcoat application should be uniformly applied, without runs, with good gloss, no obvious brush marks, and a smooth and delicate touch.


latest company news about How to brush wood paint? What are the operational steps?  0

Pub Time : 2023-10-21 11:32:33 >> News list
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