doublefold

Doublefold is a term used in several disciplines to describe something produced by applying two folds to a material, sheet, or structure. Because it spans different fields, there is no single universal definition; the exact meaning depends on context and application. The common thread is the creation of two successive creases or layerings that alter shape, thickness, or function.

In textiles and garment construction, a double fold often refers to folding fabric twice to enclose a raw edge or to create a neat, sturdy hem. Double-fold hems are valued for durability and a clean appearance, and the term can also describe the use of a double-fold bias tape in edge finishing. The technique can increase stiffness or create a reinforced margin suitable for handling or washing.

In paper crafting and bookbinding, double folding describes folding a sheet twice to produce multiple panels or a pocket, and it can be used to form folded inserts or to create compact brochures with several pages. The approach is common where a compact, multi-panel layout is desired without additional binding steps.

In design and origami contexts, double fold may refer to a sequence of two creases that generates a multi-layered crease pattern or a more complex shape. In computing or data contexts, the term is sometimes used metaphorically to describe applying two successive folds or layers of transformation or validation, though such usage is not standardized.

See also single fold, pleat, origami, bookbinding.