| abstract |
A core winder is disclosed for forming tubes from at least one helically wound strip (S1) of web material, comprising: a spindle (5), about which the strip or strips of web material are wound; a forming unit (9) comprising a belt (17) entrained about at least two pulleys (11, 15), at least one of which is motorized. The belt forms a loop (17S) about the forming spindle. The belt has a front face provided with a toothing cooperating with one of the pulleys, which is also toothed. |