| 摘要 |
An apparatus for shaping a flexible web ( 2 ) includes, between an entry roller ( 5 ) and a forming roller ( 3 ), a regulating module ( 7 ) provided with a starting roller ( 13 ) designed to control the movement and the speed of the web upstream of the shaping roller ( 3 ) and at least one mobile guide element ( 9 ) designed to exert, at least on one buffer loop ( 8 ) of the web ( 2 ) formed between the rollers ( 5, 3 ), a positive guiding thereof, in accordance with a law of displacement which is a function of the length of the buffer loop ( 8 ) in operation.
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