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Geometry

Cut line

A cut line indicates a path where material is intended to be cut through, such as a package outline or window.

Updated

What it means in packaging

Cuts define free edges and openings. A coloured stroke is only a visual convention; the receiving production workflow must recognise its layer, spot colour or line type. A cut mistakenly assigned to a fold can separate a panel from the package.

A practical example

The outside edge of a tuck flap is cut. The edge joining the same flap to the carton body is creased.

What to check

Inspect open paths, duplicate contours and line assignments after importing a supplier file.

Use it in your project

Crease
A crease is a controlled deformation of board that guides a fold without cutting through the material.
Perforation
A perforation is a series of cuts separated by uncut bridges that creates a controlled tear or separation line.
Trim
Trim is the intended finished boundary of printed work after excess material is cut away.