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1.
At present, the commonly used coatings of furniture manufacturing companies are: nitro coatings (NC), acid-cured coatings (AC), unsaturated resin coatings (PE), polyurethane coatings (PU), ultraviolet-curable coatings (UV), water-based coatings ( W)
Advantages of PU polyurethane coatings: high hardness, good wear resistance, heat resistance, water resistance, high solid content (50-70%), good fullness, high construction efficiency, low coating cost, and wide application range
W Water-based paint: Advantages: non-toxic, non-irritating, environmentally friendly, in line with modern people's fashion taste, convenient construction, and good film flexibility
Advantages of UV curing coatings: After strong UV curing treatment, the color is stable and long-lasting, which effectively solves the problem of fading and color difference of the door panel; the mirror surface of the door panel is better, and the paint film is full without orange peel; it is currently compared in the world Environmentally friendly and healthy coatings, scratch-resistant, acid- and alkali-resistant, and resistant to deformation
Advantages of PE unsaturated resin coating: 1.
Advantages of NC nitro coating: fast drying speed, easy to renovate and repair, surface dry and continuous coating, no sanding between layers, simple ratio, convenient construction, and good hand feeling
Description of the characteristics of the four paints:
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At this stage, water-based paint still has the limitations of high cost and poor comprehensive performance (cost-effectiveness), and the market acceptance is not high
2.
In the coating construction process, there are different construction requirements for different coating effects
.
A set of reasonable and appropriate coating variety matching process can improve the coating effect, reduce coating cost, and improve work efficiency
.
On the contrary, things are counterproductive, not only failing to obtain an excellent coating effect, but also increasing the cost of coating and even scrapping the entire product
.
For example: NC type is used as the base, PU type is used as the surface.
When constructing according to this process, although not 100% of the defects will appear, but sometimes there will be undesirable phenomena
.
1.
PU bottom and NC surface: This is a set of typical coating varieties matching coating process, which can not only take advantage of the good filling of PU bottom, but also play the advantages of NC construction, with excellent coating effect, dry and delicate The touch feel
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1.
PU bottom, PU surface: the most common and widely used
.
2.
NC bottom and NC surface:
When painting the open effect, it can make the natural, lifelike and original effect to the substrate
.
3.
When water-based paint is used as a primer, it must be fully dried before applying PU, NC and other oil-based paints
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4.
When oil-based paint is used as a primer, water-based paint can generally not be used as a surface
.
Because it is difficult for water-based paint to adhere to the surface of the oil-based paint film, it will eventually lead to poor adhesion and layer separation
.
This refers to the characteristics of water-based coatings in the market at this stage
.
3.
Painting process:
Full paint: 9 bottoms and 3 sides
Open paint: 3 bottoms and 2 sides
Clear water coating process: PU open primer → sanding → bottom rubbing color (Gries) → PU closed bottom → sanding → PU closed bottom → sanding → PU top coat
White paint mixed oil painting process PU primer → sanding → PU white base → sanding → PU color surface
Black and white coating process: NC white primer → sanding → NC black primer → sanding → NC transparent primer → sanding → NC transparent top coat