Used in printing presses for assembling and binding books and pamphlets using the "artistic binding" or hot glue method. Function of Humans: The machine scratches or "peels" the spine of the book (the assembled papers) to open the paper pores, allowing the glue to penetrate deeply and ensuring the pages do not detach. Automatically. Features: High productivity of up to 480 books per hour for some automatic models. Ability to bind thickness up to 60 mm and width 320 mm (A4). The machine is new, only used twice.