Vacuum coating and metalizing is the process of adding a thin film of aluminum or another coating to a material. In principle, the process calls for the evaporation of the coating material inside a vacuum chamber, after which it condenses onto a web of the substrate as it passes through. Paper and film metalizing is utilized in the packaging and decorative market segments. The barrier and decorative markets are noted for their wide variety of products from beer labels to chip bags. Inside this chamber, aluminum wire is fed onto individual, resistance-heated inter-metallic evaporators, where the aluminum becomes molten and evaporates.