Drying System Design in Sizing Machines
topic
Sizing machine drying systems use multi-cylinder steam-heated drum arrangements with pre-drying cylinders at 100 to 110 degrees Celsius forming the size film before main drying at 120 to 130 degrees Celsius completes moisture removal, with infrared moisture sensors monitoring final moisture content of 6 to 8 percent and hot air impingement supplementary drying enabling higher machine speeds without cylinder count increase.
Role
Controls the drying rate and final moisture content that determine size film quality and yarn handle, with insufficient drying leaving tacky yarn prone to end-to-end adhesion while excessive drying over-dries the size film causing brittleness and cracking that reduces weaving performance, making drying system thermal profile management one of the most critical sizing process parameters.