Application of Thermal Spray Coatings on Calender Rolls, 1994 Finishing and Converting Conference Proceedings
B. A. Phillips, J. K. Knapp
Thermal spray coatings resist surface degradation on calender rolls and thus provide improved, more consistent paper quality and, through extended roll change intervals, reduced costs.
Lab tests and actual performance data are used to select coatings for specific calender applications. Certain coatings possess superior characteristics needed to perform well in hard-nip, soft-nip and supercalender stacks.
Considerable experience has been gained and coated calender rolls provide improved sheet profile and finish that can enhance runability and print quality.