REEL-UP OF A PAPER WEB AND CYLINDER THEREOF

摘要

A reel-up for a paper web comprises a reeling cylinder (1) equipped with a grooving (3) on the mantle surface, a reel spool (2) around which the web (W) is reeled into a reel (R), as well as means for loading the reel spool (2) and the reeling cylinder (1) against each other to achieve a reeling nip (N) between the reeling cylinder (1) and the reel (R). The grooving comprises parallel flat or shallow grooves (7), which form a grooving whose total cross-sectional area is greater in the edge areas (6) of the mantle of the reeling cylinder (1) than in the central area (5) of the mantle of the reeling cylinder (1). The grooving is used to control the behaviour of air during the reeling.