Coaters

Many of the coating methods described elsewhere in this section can also be built to apply hot melt coatings. Hot melt coatings are applied to the substrate at elevated temperatures and bond to the web material. These coatings, typically delivered to the coater at temperature, can be applied via hot melt slot die, smooth roll, hot melt gravure or knife over roll and knife over table coating application methods. After coating, they are typically cooled or cured prior to further processing. Special care needs to be given to the type of release coatings on downstream rolls which will contact the face side of the coating. These coaters can be run at a wide range of speeds and coating thicknesses.