Flexible-packaging glossary

Trapping

A controlled overlap between adjacent print colors intended to reduce visible gaps when normal registration variation occurs.

Why buyers encounter it

Trap decisions belong in prepress. Brand artwork can be adjusted during production preparation even when its visual design stays the same.
Print registration target and machine eye mark
Buyer diagramReference diagram for trapping.

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-074. Application-specific details remain subject to manufacturer and technical review.