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Uralac® Ultra: Powder coating for heat-sensitive substrates

How does the technology behind Uralac® Ultra-enabled powder coating work? How does it differ from traditional liquid-based coating? And what are the benefits? We are excited to show you this, and more! Have a look...
Uralac® Ultra's applications

The Uralac® Ultra powder-coating process

MDF is shaped, cut, routed and sanded as determined by the designer. Due to the ease of processing the one-layer Uralac® Ultra coating, you can choose almost any shape. 
 
Climatizing the MDF for a stable moisture percentage will make the process more consistent through different weather conditions and MDF supplier variations. Typical moisture percentages lie between 4 and 8%.

Loading

The coating process starts by loading the conveyor belt with the MDF objects. The MDF is hanging from metal hooks to ensure proper grounding of the material.

Preheating

The first step in the application process is preheating. In an IR oven, the MDF is heated to 50-60ºC for a good homogeneous conductivity of the substrate.

Spraying

Application of the Uralac® Ultra powder is done with standard corona spray guns. The use of an active counter electrode ensures an evenly applied layer.

Curing

Curing of the coating is done at 130ºC for 3 minutes, depending on the substrate and powder used. Heat-up time varies between 2 and 5 minutes.  
 
An infrared oven is needed for fast heat-up and cure without overheating the MDF. 130ºC is low enough to not damage most types of MDF.

Unload, pack & ship

After cooling down, the conveyor belt can be unloaded. The cooled down MDF has a fully cured coating and is ready to be packed and shipped.

Powder Coating Line Layout

常见问题解答

我们如何在标准“非导电”MDF 上喷涂粉末?

对于粉末应用,MDF 内的水分导电作用。占总重量 4-8% 的水分含量足以吸粉末。

使用粉末涂料是否需要特殊 MDF?

粉末涂料不需要特殊 MDF–尽管现有 MDF 的质量和类型之间存在差异。

我们建议在制造产品前评估您打算使用的 MDF 类型。

此外,我们建议将其储存在恒温恒湿区域以控制 MDF 的水分含量。

用于金属粉末涂层的烘箱是否也适合固化 MDF?

大多数传统固化烘箱都是对流烘箱。使用红外辐射 (IR) 烘箱可以获得 MDF固化的最佳效果。

使用 IR 烘箱,MDF 的表面可以快速加热来固化粉末涂层,同时其核心则保持相对较低的温度。

使用对流烘箱时,温度通常过高,或者由于达到固化温度所需的时间较长,导致MDF 的核心温度过高。

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