About Far Infrared: Regarding the Drying of Paint

We will introduce the reasons why drying paint is clearly faster in a far-infrared oven compared to a hot air oven!

AMK Co., Ltd. is a company that handles industrial far-infrared heaters, heating devices, and drying equipment. The drying and curing of melamine paint specifications require heating at 130°C for 3 minutes. However, with convection heating (hot air furnace heating), when the surface comes into direct contact with a 130°C atmosphere, the temperature of the paint surface rises rapidly, causing a film to form and trapping the internal solvent. As the temperature inside the paint rises, phenomena such as foaming and cracking occur due to solvent evaporation. To avoid this, the temperature must be gradually increased to 130°C, allowing solvent evaporation from the entire thickness of the paint film, which takes about 20 minutes until curing is complete. With far-infrared heating, without any setup, for example, in a heater furnace with a surface temperature of 500°C, the painted item reaches 130°C to 150°C in about 3 minutes. Even after removal, the hardness of the paint film and other qualities are often superior to those achieved with hot air heating. Far-infrared heating is very well absorbed by organic materials, allowing a large amount of energy to be absorbed at the paint surface, and the heat transfer to the interior of the paint film occurs almost instantaneously, resulting in the surface and interior of the paint film being nearly the same temperature. As a result, solvents are expelled from the entire paint film, preventing pinholes and cracks. *For more details, please refer to the PDF document or feel free to contact us.

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