Inkrullingen

Inkrullingen is a Dutch term that translates roughly to inward curling. In printing, graphic arts, and related crafts it can refer to an effect or defect in which ink or printed elements appear to curl or form inward ridges on the surface of the paper or substrate. The term is not widely standardized in English-language sources, and its precise meaning can vary by region, discipline, or the context in which it is used.

Etymologically, inkrullingen comes from the prefix in- (into) and the verb krullen (to curl), with the plural noun krullingen describing curled shapes or ridges. In practice, the phrase is most often encountered in discussions of print quality, paper handling, and finishing, where it denotes a localized curling motion associated with ink deposition.

In printing and bookbinding, inkrullingen may arise as a defect or as a deliberate effect, depending on the project. Common contributing factors include moisture imbalance between ink and stock, high or uneven ink saturation, poor drying, paper with insufficient dimensional stability, and improper coating or lamination. The presence of inkrullingen can affect legibility and overall appearance, and in some cases it may reflect aging or environmental exposure of the printed material.

Prevention and mitigation focus on material compatibility and process control. Selecting paper with good dimensional stability, using inks that are compatible with the substrate, controlling humidity and temperature during production, allowing adequate drying time, and applying appropriate finishing steps can reduce the risk of inward curling. When present, post-press stabilization and careful storage may help minimize further deformation.

See also: cockling, bleed, feathering, ink mottle, curling (paper).