Improved method of producing perforated packing films made of polyethylene

摘要

The method according to the invention provides that said film (1) is passed, after being tensioned, about a roller (3) provided with cutting members (4) and rotating at a tangential speed which is different from the traverse speed of film (1) so as to provide a relative movement between said cutting members (4) of roller (3) and said film (1) causing the latter to be partially torn by the cutting members. The direction of rotation of roller (3) carrying the cutting members (4) is such as to generate a tangential speed which is in accordance with the traverse speed of film (1).