Multi-fold interfolding machine structure

Interfolding machine to obtain an interfolded product starting from a web of paper, or similar material, comprising:

• feeding means adapted to feed at least one web of paper;
• cutting and transferring means of said web of paper adapted to cut said web of paper into sheets of determined length and to transfer them along a conveying path;
• actuating means of said cutting and transferring means so that said web of paper and said sheets proceed at a first speed V1;
• overlapping means adapted to pick up said sheets from said conveying path and to overlap them in turn by a predetermined sheet portion;
• actuating means of said overlapping means adapted to convey said sheets at a second speed V2 less than V1, said speed difference being imposed for overlapping partially two consecutive sheets according to said sheet portion;
• folding means of the consecutive overlapped sheets into panels in order to provide a stack of interfolded sheets;
• whose main feature is that
• said cutting and transferring means comprises a first cutting, transferring and overlapping means for sheets of a first length and at least a second cutting, transferring and overlapping means for sheets of a second length.