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Application filed by Valmet Paper Machinery IncfiledCriticalValmet Paper Machinery Inc
Priority to FI903916ApriorityCriticalpatent/FI89087C/en
Publication of FI903916A0publicationCriticalpatent/FI903916A0/en
Publication of FI903916ApublicationCriticalpatent/FI903916A/en
Publication of FI89087BpublicationCriticalpatent/FI89087B/en
Application grantedgrantedCritical
Publication of FI89087CpublicationCriticalpatent/FI89087C/en
The invention concerns a heatable roll to be used for wet pressing of paper or board, which during graining is in direct contact with the paper or board web. The roll 10;40 comprises a hollow, tube-shaped roll casing 11,12;41 which is heated up by a heating medium. In the roll casing 11,12;41, channels or equivalent have been formed 14,14a,14b;46 which extend from one end of the roll casing 11,12;41 to the other, effectively close to the outer surface of the roll casing. The heating medium is made to circulate through these channels to heat the outer surface 13;45 of the roll casing. <IMAGE>