Definition - What does Multi-Package Coating mean?
Multi-package coating refers to a specific type of fluid that is applied to a metal's surface to protect it against corrosion. A multi-package coating is stored in several containers, each of which must remain chemically independent of each other until they are mixed immediately before application. However, as long as each part is stored in a separate container they remain stable for a longer period of time than single-package coatings.
Corrosionpedia explains Multi-Package Coating
A multi-package coating differs from a single-package coating in that the multi-package coating consists of several chemically reactive components that remain stable only for a short duration.
Paint, paint thinners, pigments and other fluid coating components are suitable for multi-packaging applications.