| 摘要 |
<p>An interfolding machine of sheet material for making a stack of interfolded sheets (1) comprising at least one web (2) of material to interfold that is cut (3) into sheets (4a,4b,4c, 4d,4e,4f,4g) of predetermined length and partial overlapping means (5,6) for the sheets (4c,4d,4e,4f,4g) in order to form an overlapped portion (7) between two consecutivi sheets. Interfolding means are provided (8,9) adapted to produce the stack (1) and conveying means (10) interfolding means are provided adapted to convey the partially overlapped sheets (4d,4e,4f) in a zone set between the means for partially overlapping (6) and the interfolding means (8,9). are furthermore, means are provided for keeping the overlapping fraction of the sheets unchanged (4d,4e,4f), through a plurality of belts (11) and a plurality of fixed guides (12) facing the belts (11) so that between the belts (11) and the respective guides (12) a channel is formed (13) for conveying the partially overlapped sheets (4d,4e,4f). The belts (11) have a plurality of teeth (14) oriented towards the guides (12) and distanced from each other such that least at one tooth (14) coincides with a respective overlapped portion (7), pushing the overlapped portion (7) against respective guides (12), so that the conveying means can convey the sheets (4d,4e,4f) partially overlapped along the channel (13) preventing the overlapping fraction of the sheets from changing (4d,4e,4f).</p> |
