Perfected perforated tube, intended for textile windings. (Machine-translation by Google Translate, not legally binding)

摘要

Perforated perforated tube, intended for textile windings, characterized essentially by presenting on its outer surface a micro-relief formed as a grid that is interrupted by the perforations in quincunx, whose holes have the particularity that its outer edge comprises a rounded projecting ridge . (Machine-translation by Google Translate, not legally binding)