Abstract: A quick and safe manner of making a sheet (15) suitable for filing, for example in a loose-leaf binder, is to provide it with a strip (11) along the one side edge of the sheet, said strip being provided with holes (14) for the rings in the file. In order to make the application of such strips (11) simple and precise, according to the invention there is used an apparatus comprising pins (5) upon which the strips (11) can be pushed down. Furthermore, on the sides of the apparatus there are guides (9) which can be displaced in the transverse direction of the apparatus and set in accordance with the size of the sheet, so that the sheet is placed precisely over the adhesive area (12) on the strip. In this position, after a cover foil has been removed from the adhesive (12), the sheet can be pressed down for sticking, after which the sheet with the strip applied can be removed from the apparatus and used for filing.