Structure of multipurpose sheet folding and stacking machine

Abstract

Folding and stacking machine (100) of a web of paper, or similar products includes a first sheet feeding line (201) and a second sheet feeding line (202). The machine (100) also includes a folding section (200) having a couple of folding rollers (7, 8) that work at a linear folding speed VP and are adapted to receive a plurality of sheets (11) of length L that are overlapped for a fraction Y of their length L and to fold them into a plurality of panels (P). The first and the second sheet feeding lines (201, 202) provide respective cutting sections of the sheets starting from webs of paper (10, 10′). These proceed respectively at a speed V1 and V2 with respect to the folding speed VP, where a first speed (V1) has a ratio X1 with respect to the folding speed VP, V2 and a second speed V2 second has a ratio X2 with respect to the folding speed VP. The first and the second sheet feeding lines (201, 202) can be operated selectively and independently, i.e. separately from each other or at the same time, according to the desired type of interfolded configuration.

Dependencies are inferred from the claim text.