| 摘要 |
In an apparatus for winding a web on a roll 7 supported by two driver rolls 1,2 and including a rider roll 8 bearing on the top of the web roll and mounted for vertical displacement in lateral guides 17, the improvement which comprises two further rider rolls 9 mounted on either side of the web roll and with their axes parallel thereto so that they make contact with the circumference of the web roll only after the latter has attained a predetermined diameter. A corresponding process is described.
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