METHOD AND DEVICE FOR COATING A PERIPHERAL SURFACE OF A SLEEVE CORE

摘要

A method of coating a peripheral surface of a sleeve core (13) with a radiation curable coating liquid (24), comprising the steps of: - supporting a sleeve core (13) in a vertical position coaxial with a coating axis (10); - providing an annular coating collar (21 ), supplying the coating liquid (24) to the annular coating collar (21) and moving the annular coating collar (21) along the sleeve core (13) in a vertical direction coaxial with the coating axis (10), thereby coating a layer of the coating liquid (24) onto the peripheral surface of the sleeve core (13); characterised in that the coated layer of the coating liquid (24) is cooled by the peripheral surface of the sleeve core (13) to have a viscosity at the temperature of the peripheral surface of the sleeve core and at a shear rate of 10 s-1 which is larger than a minimum viscosity ?min, with: (formula) wherein, d represents the thickness of the coated layer expressed in µm, and ?min is expressed in mPa.s. A coating device for performing the above coating method is also disclosed.