Edge folding dies are used to create different types of car interior decoration panels. These panels are composed of a solid support that can be plastic or another solid material (fiberglass, carbon, etc.) covered with a decoration material that can be leather or textiles.

The principle of the edge folding die consists in spreading the decorative material (ex: leather) around the edge of the plastic support by applying an adhesive and activating it with a steam-based heat source. This splitting is done in different directions depending on the contour and shape of the part with the help of splitting blades operated with automatic pneumatic guide systems.