With the word "panel" we identify each of the pieces that make up the leaflet.
A bi-fold is made up of 2 panels; a tri-fold, of 3 panels, and so on.
In the case of cross folds , we are actually folding, first, as a bi-fold on the horizontal axis, and then again as a bi-fold on the vertical axis.
In the cross fold + bi-fold folding, to those 2 operations we add a third one (i.e.: 1.º: bi-fold on the horizontal axis; 2.º: bi-fold on the vertical axis; and 3.º: bi-fold on the horizontal axis again).
When we speak of: tri-fold + bi-fold; 4-panel+ bi-fold; 5 panel + bi-fold; 6 panel + bi-fold; 7 panel + bi-fold; with the last expression "+ bi-fold" we want to express that, after the respective folds have been made, we make one last fold in the opposite axis.
In the case of Z fold or accordion fold leaflets are folded like a fan, so all sections or panels are the same size. In the case of a classic tri-fold, one or more panels fold inwards, so that these panels have to be a little shorter than the front and back cover panels. For example, for a classic tri-fold measuring 10 x 21 cm when closed, its panels measure (visualizing the outer side): 9.7 cm left panel + 10 cm back cover or central panel + 10 cm front cover or right panel. Flat size is therefore 29.7 x 21 cm
Most common folding types for advertising leaflets:
- Classic tri-fold
- 4-panel roll fold
- 4-panel accordion fold
- Double-gate fold