Filmlaag

Filmlaag is a Dutch term used in materials science, coatings, and packaging to denote a thin layer of film-forming material applied to a substrate. The word is a compound of film and laag (layer) and is used in technical literature to describe a discrete coating that contributes to protection, functionality, or appearance.

Filmlaag appears in contexts such as protective coatings on glass or plastics, functional coatings on solar cells or displays, and multilayer packaging films where it serves as a barrier or sealant between layers.

Characteristics of a filmlaag include its thickness, typically ranging from several nanometers to several micrometers, depending on the application; its chemical resistance; optical properties such as transparency or imparted color; and its adhesion to the underlying substrate.

Production and application methods include coating (spray, dip, or roll coating), vapor deposition (chemical or physical vapor deposition), extrusion or lamination of films, and the use of adhesive interlayers to attach a film to a surface.

In practice, a filmlaag is often part of a multilayer stack where each layer provides a specific function, such as barrier protection, UV filtering, or mechanical strength. Examples include laminated safety glass with a polymer film layer and food packaging films with dedicated sealing layers.