A staple-less binding unit including a pair of upper and lower teeth binds a sheet bundle which is discharged to an intermediate processing tray by a sheet discharge portion and whose one edge abuts against a rear edge stopper. A control portion switches a binding mode of the staple-less binding unit that implements the binding process on the sheet bundle in a first binding mode of binding the sheet bundle without any staple such that the pair of upper and lower teeth bite across an edge of the sheet bundle and in a second binding mode of binding the sheet bundle without any staple such that the pair of upper and lower teeth do not bite across any edge of the sheet bundle.

A staple-less binding unit including a pair of upper and lower teeth binds a sheet bundle which is discharged to an intermediate processing tray by a sheet discharge portion and whose one edge abuts against a rear edge stopper. A control portion switches a binding mode of the staple-less binding unit that implements the binding process on the sheet bundle in a first binding mode of binding the sheet bundle without any staple such that the pair of upper and lower teeth bite across an edge of the sheet bundle and in a second binding mode of binding the sheet bundle without any staple such that the pair of upper and lower teeth do not bite across any edge of the sheet bundle.

In a device for double folding leaves, the device is provided with two conveyor belts that are located against one another such that leaves can be clasped between the conveyor belts with the exception of a strip that protrudes between the conveyor belts, whereby the conveyor belts are aligned with respect to one another along the side of the strip and with two or more folding elements along the conveyor belts that can fold the aforementioned strip, whereby the device. is equipped such that leaves are guided with their strip alongside the folding elements by the driving of the conveyor belts, whereby at least one folding element folds the strip in one direction and at least one folding element folds the strip in the other direction.

In a device for double folding leaves, the device is provided with two conveyor belts that are located against one another such that leaves can be clasped between the conveyor belts with the exception of a strip that protrudes between the conveyor belts, whereby the conveyor belts are aligned with respect to one another along the side of the strip and with two or more folding elements along the conveyor belts that can fold the aforementioned strip, whereby the device. is equipped such that leaves are guided with their strip alongside the folding elements by the driving of the conveyor belts, whereby at least one folding element folds the strip in one direction and at least one folding element folds the strip in the other direction.

An assembly for realizing in continuous covering jackets of book elements of different dimensions starting from a film wrapped up in a coil. The assembly includes a mechanism for cutting the film unrolling from the coil for realizing pieces of the film; a first folding device of a first end of the pieces; a second folding device of a second end of the pieces; a control and command unit and a longitudinal welder suitable for both superiorly and inferiorly closing folded pockets and for regulating the height of the cover itself by trimming the parts in excess.

A multifunction rotary tool for milling and roughening a bock of blocks of pages to be bound by a bookbinding machine comprises a cylindrical base defining a rotation axis, a first annular member adapted to be secured to the cylindrical base and having an outer edge, a crown of milling blades formed in the first annular member proximate to its outer edge and defining a cutting plane perpendicular to the rotation axis, and a plurality of roughening inserts securable to the cylindrical base along a circular area radially offset from the crown of milling blades. Each insert comprises a cylindrical body with a hook-shaped end portion defined by an upper edge with a sharp tip designed to penetrate the block bock in a perpendicular cut. The end portion comprises a recessed surface adapted to tear and push downwards the cut material without removing it.

A method for binding a bundle (6) of leaves (1), where an edge (3) of the bundle (5) of leaves (1) is bound, and for the binding, use is made of a bundle (6) of leaves (1) in which the leaves (1) present a first fold line (2) that extends parallel to and at a distance (A) from the edge (3), and where the leaves (1) also present a second fold line (4) that is located parallel to and at a distance (B) from the first fold line (2), and which is located between the edge (3) and the first fold line (2).

A method for binding a bundle (6) of leaves (1), where an edge (3) of the bundle (5) of leaves (1) is bound, and for the binding, use is made of a bundle (6) of leaves (1) in which the leaves (1) present a first fold line (2) that extends parallel to and at a distance (A) from the edge (3), and where the leaves (1) also present a second fold line (4) that is located parallel to and at a distance (B) from the first fold line (2), and which is located between the edge (3) and the first fold line (2).

A device for producing a bound book block including a lining strip or a cover includes a pressing station configured to move the lining strip or the cover in a pressing direction from a position from which the lining strip or the cover is gluable to a spine of the book block and to press the lining strip or the cover against the spine of the book block. A lining supply and a cover supply are each disposed upstream of the pressing station. A linearly movable common transport means is connected to the pressing station and configured to selectively, successively transfer the lining strip or the cover into the pressing station in a conveying direction and to convey the lining strip or the cover in the pressing station relative to the book block into a second position.

Method for binding a bundle (5) of sheets (1), whereby an edge (2) of the bundle (5) of sheets (1) is bound, whereby use is made of sheets (1) in which a strip (4) of each of the sheets (1) is double folded separately beforehand along the same line to form a fold line (3) parallel to and at a distance (A) from the aforementioned edge (2). If paper with a density of less than 120 grams per square meter is used for the sheet (1), after having been double folded the strip (4) is folded at least once more along the aforementioned fold line (3).