dekflappen

Dekflappen are panels on packaging and printed materials that function as lids or closing flaps. They cover openings to secure the contents of a carton, envelope, or similar product. In carton construction, the top and bottom of a box typically include dekflappen that fold over the opening and are held in place by tuck-in tabs, glue, or interlocking features. The exact geometry depends on the box style and production method. Common variants include full-cover lids, tuck-flaps that interlock with the opposite wall, and glue flaps that create a sealed edge.

Dekflappen are usually made from the same material as the body of the packaging, typically paperboard or reinforced paper, sometimes with coatings for moisture resistance or print quality. They may carry branding, product information, and can include tamper-evident features such as perforations, unique adhesives, or security prints. The design must balance ease of opening with secure closure, as well as printability and display considerations in retail.

The term is Dutch, derived from dek (cover) and flap, and is used in packaging and printing industries in the Netherlands and Flanders, as well as in international contexts where Dutch terminology is used. Related terms in English include glue flap and tuck flap, depending on the securing method.