Rolls in Paper and Board Machines : Nip Design in Calenders

2017-01-08T00:14:19+00:00 Categories: Papermachine Rolls|Tags: , , , , , , , | Nip Design in Calenders The functions of covers or coatings in soft nip calenders are twofold. The hard heated roll in the calender is either a chilled iron roll with a hard wear-resistant surface, or it is coated for even more improved wear resistance. The surface of the hard roll needs to be extremely [...]