Abstract: Printing rollers, in particular ink rollers, dampening rollers or varnishing rollers for web-fed offset printing machines and sheet-fed offset printing machines, with a rigid roller core and a roller cover with an outside layer from elastomeric or elastic plastic material are constructed that way that the roller cover is connected with the roller core detachable. In this way for inking units, dampening units and varnishing units of printing machines rollers are made available, whose roller cover is exchangeable and can be used in a one-way method.

Abstract: A roller for industrial uses or printing uses essentially consists of non-metallic materials. The roller particularly comprises a roller core or a roller base of nonmetallic material. Besides, also bearing seats and bearings are preferably made of non-metallic material. The roller is applied in usual industrial and graphic applications. The roller can be used in a one-way procedure and be supplied to a chemical, mechanical or thermal recycling process directly after use.