Industrial furnaces are built of several kinds of high temperature (refractory) materials to hold the process material and hold in the heat without breaking down during the several months that they usually run.
Industrial ovens are batch or continuous process enclosures or tunnels that are insulated and used for thermal processing. Ovens are lower temperature (usually < 1400° F) thermal processing units, usually without refractory insulation.
Process dryers are used to remove liquids or moisture from bulk solids, powders, parts, continuous sheets or other liquids by evaporation or sublimation.
Web coaters and roll coaters are used to rapidly apply controlled layers of paint, protective films, adhesives and other types of coatings onto the moving surface of paper, plastic film, coil stock, metal foils and other sheet materials.