| 摘要 |
A perforator wheel (31) for perforating thin materials, such as paper. The perforator wheel (31) is provided with a plurality of peripheral teeth (32) interspaced by means of intermediate slots (36). The teeth (32) are provided with two outer lateral faces (34, 35) bevelled so as to form a cutting edge (36). The length of the two lateral faces (34, 35) of the teeth is different from each other.
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