| 摘要 |
A unit (20) for the incision of a strip (15) made of a plastic material to cut two distinct incisions (7, 9) into two opposite surfaces (8, 10) of the strip (15); the incision unit (20) has: a conveying device (21), which feeds the strip (15) along a conveying direction (C); two support plates (41), which are arranged on opposite sides of the strip (15), so that each support plate (41) faces a corresponding surface (8; 10) of the strip (15); and at least two incision devices (42), each of which cuts an incision (7; 9) into a corresponding surface (8; 10) of the strip (15) and has a cutting element (43), which is supported by a support plate (41), and a contrast element (44), which is supported by the other support plate (41). |
