The main difference between Creasing and Scoring lies in their purpose and mechanical effect on the material. Creasing is a preparatory compression process specifically designed for thick board, where a blunt rule is pressed against the material, intentionally crushing and restructuring the internal fibers along the desired Fold Line. This action reduces the material’s stiffness along the line, preventing the surface finish or ink from cracking when the material is eventually bent in the Folding stage.

Scoring, in contrast, is simply the creation of a superficial groove on the material, typically using a wheel or a dull blade. It does not exert the massive, concentrated force needed to break the internal fibers of thick stock. Scoring cannot be used on thick materials because it only creates a slight indentation on the surface; when attempting to fold thick board based only on a score line, the material’s structural resistance remains high, resulting in an inevitable and uncontrolled breakage (cracking) along the fold, ruining the product and any Dieline specifications.