What is ACM? Aluminum Composite Material – ACM is a painted aluminum coating, consisting of two aluminum skins with a thermoplastic core of low density polyethylene. It uses a sophisticated gluing process chemical involving adhesives at high temperatures. The painted surface of the aluminum sheet is coated with PVDF KYNAR 500 (70%) or polyester base. The result is a product with excellent uniformity, strength and beauty that is widely used for covering facades, columns, canopies, totems, logos and much more.