Heatset Drying

A method of drying certain types of printing ink (called heatset ink) that require drying by evaporation, chemical reaction promoted by heat, and cooling. This is accomplished by passing the printed paper web through a dryer at a temperature of 250:500ºF and then cooling it to 75:90ºF. (See Heatset Ink.) Coated papers can cause problems in heatset drying, especially when their moisture content is high and the porosity is low. (See Blister and Fiber Puffing.)

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