Method for binding a bundle of leaves, a bundle of leaves, method and device for forming such a bundle of leaves

A method for binding a bundle (5) of leaves (1) in a binding back (7), comprising the following steps:

• providing a plurality of leaves;
• separately folding a strip (4) of each of the plurality of leaves, each respectively clamped between a plurality of plates, over an angle of at least 120° along a fold line (3), first in one direction and then in an opposite direction along the same fold line, the fold line extending parallel to an edge of each of the leaves at a distance (A) from the edge;
• forming the plurality of leaves into a bundle of leaves;
• and
• placing the bundle (5) of leaves in the binding back (7) with the edge (2) of each of the leaves (1) received and fastened therein,
• wherein separately folding the strip further comprises steps of:
• (a) extending at least one of the leaves, clamped between the plurality of plates, and the plates from a second plurality of plates and into a funnel such that the one of the leaves folds along the fold line by contacting at least a first wall of the funnel;
• and
• (b) retracting the one of the leaves and the plates from the first wall and into the second plurality of plates such that the one of the leaves, folded against the first wall, is unfolded along the fold line by contacting a first tip of the second plurality of plates.