| 摘要 |
A system to achieve a perfect winding structure during winding webs (1, 1', 1", ...) especially made of paper to get at least one roll (5, 5', 5", ...) on a winding machine, comprises means (8, 9) in order to change the tension remaining in the wound web. The winding machine is of the supporting drum type with several supporting drums (2, 3) in order to carry and make rotating on at least one roll (5, 5', 5",...) that is positioned in a winding bed (4) made by the supporting drums (2, 3), at least one of these supporting drums preferably has an elastic flexible surface (2', 3'). The means (8, 9) for changing the tension remaining in the wound roll are working in that way, that the tension of the web (1, 1', 1",...) first decreases at increasing roll diameter of said at least one roll (5, 5', 5", ...) during an initial winding phase, then keeps approximately on the same level and, after winding further, decreases further at increasing roll diameter during a final winding phase.
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