Near infrared and far infrared are different parts of the infrared spectrum. Near IR usually has shorter wavelengths and stronger heating intensity, while far IR has longer wavelengths and is often associated with gentler surface heating. For industrial users, the key question is not which wavelength is universally better, but which infrared wavelength fits the material, heating distance, process speed, and production requirement. This article explains the difference between near IR and far IR and how infrared heating technology is used in industrial drying, curing, printing, PET blow molding, plastic processing, and oven heating systems.
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