Dieline
The flat, two-dimensional template that defines exactly how a piece of packaging is cut, scored, and folded before it becomes a box.
Every printed box begins life as a dieline. It maps the cut lines (where the die blade slices the substrate), the score lines (where the material folds without tearing), and the safe zones where artwork can sit without bleeding into a glue tab. Production teams treat the dieline as ground truth — if your art lands a millimeter outside the safe zone, it will either get trimmed off or wrap around an edge where you didn't want it.
Dielines are typically delivered as vector PDFs or AI files at 100% scale. CustomBoxArena provides a dieline PDF for every product so designers can drop artwork in with confidence. When in doubt: align type to the geometric center of each panel, leave at least 3 mm of safe-area margin, and put critical text on panels that won't fold.
Related terms
- B-fluteA medium-weight corrugated grade (~3 mm thick) that adds real crush resistance while still printing cleanly — common for shipping mailers.
- E-fluteA thin, fine corrugated material (~1.5 mm thick) used in mailer and retail boxes for a clean print surface with light cushioning.
- EmbossingA finishing technique that raises a portion of the printed surface using paired dies, creating a tactile relief without ink.
- FSC certificationA Forest Stewardship Council audit that traces paperboard back to forests managed for biodiversity, worker rights, and indigenous land use.