A method of joining a stack of sheets, a stack of sheets created in this way, a method and apparatus for forming such a stack of sheets

摘要

1. The method of connecting the stack (5) of sheets (1) in the connecting spine (7), by which the stack (5) is placed in the connecting spine (7) with the edge (2) of the sheets (1) and securing them there, characterized in that for the joints use a stack (5) of sheets (1), a strip (4) of each of which (1) was separately double-pre-bent at an angle of at least 120 ° along exactly the same line to form a fold line (3) that runs parallel and at a distance (A) from the aforementioned edge (2), while the sheets (1) of the connected stack (5) are doubly bent at the same the very distance (A) from the edge (2) .2. A method according to claim 1, characterized in that a stack (5) of sheets (1) is used, while the strip (4) of sheets (1) is bent back to the plane of sheets (1). 3. A method according to claim 1, characterized in that the angle at which the strip (4) is bent is greater than 90 °. 4. A method according to claim 3, characterized in that the angle at which the strip (4) is bent is at least 120 °. 5. A method according to claim 1, characterized in that the distance (A) between the fold line (3) and the edge (2) of the sheets (1) is chosen such that when opening the connected stack (5), the open sheets (1) are extended flat or practically flat .6. A method according to claim 1, characterized in that the connecting spine (7) is a V-shaped or U-shaped connecting spine and the distance (A) essentially corresponds to the depth of the connecting spine (7). 7. A method according to claim 1, characterized in that the distance (A) is slightly greater than the depth of the connecting spine (7) .8. A method according to claim 1, characterized in that the distance (A) is between 10 and 14 mm and preferably 12 mm. A method according to claim 1, characterized in that the connecting spine (7) is a metal connecting spine (7), which is provided with hot-melt adhesive (10), which is made to melt during the connection, to fix the sheets (1) along them