Flexible-packaging glossary

Dieline

A controlled drawing that shows package geometry and artwork boundaries such as cuts, folds, seals, gussets, zippers, and other features.

Why buyers encounter it

Use the approved dieline as the shared reference for design, prepress, quoting, and package dimensions.
Packaging dieline with cut and fold lines
Buyer diagramReference diagram for dieline.

Use the term carefully

This definition helps interpret a packaging conversation. It does not establish a complete film structure, machine setting, regulatory conclusion, shelf-life result, or approval for a particular application.

Research source: PC-110. Application-specific details remain subject to manufacturer and technical review.