Flexible-packaging glossary

Gusset

A folded section of a bag or pouch that can expand to create additional volume, shape, or a standing base.

Why buyers encounter it

State where the gusset is located and how its dimension is measured. A finished sample or drawing prevents ambiguity.
Stand-up pouch with top seal and bottom gusset
Buyer diagramReference diagram for gusset.

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-071. Application-specific details remain subject to manufacturer and technical review.