
Rigid Box
Clamshell Box
The clamshell box is a one-piece hinged rigid box where the lid and base are connected by a spine panel created with crease scores or a routing operation. The lid is made slightly larger than the base so it nests cleanly over the tray when closed. Both the lid and base are constructed from chipboard (typically 2 to 3mm), wrapped in paper or specialty material, and joined at the spine. The wrapping process covers all surfaces, including the hinge area, for a seamless exterior.
The key difference between a clamshell and a book-style box is the lid sizing: in a clamshell, the lid overlaps the base walls, while in a book-style box, the tray is smaller than the cover and the cover creates an overhang.
