Abstract:
The invention relates to a method and device for protecting core material using protective material, in which method the core material (4) is coated with protective material (3) . According to the invention, the method comprises the step of un-spooling (1) a cut-to- size protective material ribbon from a reel onto a rolling-up unit; the step of transferring the rolling- up unit and the step of coating (2) the core material with a protective material ribbon. At the step of un-spooling (1) the protective material ribbon, a uniform, cut-to-size protective material ribbon (3b) is un-spooled from one or more protective material ribbon reels (5) onto the rolling-up unit (6) ; and if necessary, the ribbons from different reels are joined together (8) by their ends to achieve a desired cut-to- size protective material ribbon. At the step of transferring, the formed rolling-up unit (6) , having a ribbon length of the protective material (3b) necessary in the coating of the core material, is removed and transferred to the step of coating (2) the core material. At the step of coating (2) the core material, the protective material ribbon is guided from the rolling-up unit (6) simultaneously with the core material (4) so that the core material is arranged within the protective ribbon.