 Slot-die coating

Metered delivery of a liquid film from a slot onto a moving substrate. It can support continuous web production, but uniform wet-film thickness, ink rheology, drying, substrate wetting and particle orientation affect the final coating.

Slot-die coating is a method used for the uniform application of films or coatings on surfaces, and it is particularly common in industries like electronics, photovoltaics, and flexible displays. This technique involves the use of a slot-die applicator, which comprises a slot-shaped die that delivers a fluid coating material (such as inks, adhesives, or polymers) onto a substrate.