Importance

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Abstract

An interfolding machine for making a stack of interfolded sheets is adapted to move a first web (10a) of a material to be interfolded, for example paper, non woven fabric, or similar material, along a first direction (101a) and a second web (10b) along a second direction (101b). The two webs of paper (10a, 10b) are dragged by means of respective series of rollers (31-36, 37-45) up to respective cutting sections (20a and 20b) where cutting rollers (2a, 2b) are arranged that in combination with respective counter-cutting rollers (3a, 3b) cut the webs of paper (10a, 10b) in order to form respective sequences of sheets (11a, 11b). The sequences of sheets (11a, 11b) reach then an interfolding section (30) where the sheets (11a) obtained by the first web (10a) and the sheets (11b) obtained by the second web (10b) are folded and then interfolded according to a determined interfolded configuration. Each series of sheets (11a, 11b) has a complete cut (51), or 'clean cut', alternated to a tear-off line (52), or 'tab-bond'. The above described configuration avoids the drawbacks of the prior art deriving from the separation of two successive sheets of two different stacks that are joined through a line of 'tab-bond' type.

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First Claim