Bobbin for winding material in strip or thread form, comprises cylindrical core and side flanges, with edge-free transition regions to reduce stress peaks on winding of the bobbin

摘要

In a winding bobbin (10) comprising a cylindrical bobbin core (11) and two frontal side flanges (12, 13), limiting the winding region and located at an oblique angle or perpendicular to the central axis of the core, the transition regions (14, 15) between the side flanges and the winding core are free of edges.