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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 V.sub.P 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 V.sub.1 and V.sub.2 with respect to the folding speed V.sub.P, where a first speed (V.sub.1) has a ratio X.sub.1 with respect to the folding speed V.sub.P, V.sub.2 and a second speed V.sub.2 second has a ratio X.sub.2 with respect to the folding speed V.sub.P. 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.

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First Claim