Thread binding is the best quality, longest-lasting binding type. The folded sheets of paper of a book are put together; each is opened in the middle and 'threaded' to the other layers in the whole volume along the fold.
Wire-O is a brand which is used as a slang term for wire binding. The wire is inserted into holes punched into the stack of paper and sealed. Wire-O bindings can be opened around 360 degrees. This binding is particularly good for different materials and changing formats. Design elements include the colour of the wire and the shape of the perforations.
Spiral binding is similar to Wire-O binding. In this case, spiral made of metal or plastic is "screwed in" to the holes punched into the stack of paper. Spiral binding is more stable than Wire-O binding - pages cannot fall out, but opposite pages can shift slightly. Using thin wire can make spiral bindings a very elegant option.
In a flat book, the sheets of paper are glued to one another across the whole surface to form the pages of the book. This produces a book block that can open completely flat and consistent double pages with no break: it is traditionally used for the production of children's books and menus, but has been reinvented by Bubu to meet the modern requirements.
For glue binding, the book block is roughened and glued with paste. Glue binding has considerable advantages over thread binding for books with different papers, large page numbers or big print runs and for budget brochures.
Book screws connect loose sheets with punched holes. The screws can be visible in a brochure or concealed under a ribbed cover. The benefit of this method is that the binding can be undone to allow pages to be exchanged at a later date. However, the poor opening is a disadvantage.