| 摘要 |
In a method for working an elongate web of material (2), use is made of a machine (1) which comprises a feeding device (5, 6) for feeding the web (2) at a given speed and a cutting device (5, 7) for making cuts in the web (2). The cutting device (5, 7) comprises a rotary backing roll (5) and a rotary cutting roll (7) with a projecting cutting means (8). The cutting roll (7) is adapted to move, during a first part of its revolution, the cutting means (8) into engagement with the backing roll (5) to form the cuts in the web (2) and, during a second part of its revolution, define with the backing roll (5) a gap through which the web (2) moves essentially unimpededly. A control means (10) is adapted to control, preferably in an infinitely variable manner, the speed of rotation of the cutting roll (7) relative to the speed of the web (2) during the second part of the revolution for optional adjustment of the distance between succeeding cuts in the web (2). <IMAGE> |
