Rainbow film, also named as iridescent film, holographic film, fluorescent film. It is totally different from the colorful plastic film by dyeing and printing. Rainbow film is a kind of the plastic lamination film, more than 2 kinds of the resins with different refractive index are melting extrusion, then laminated to be above 100 layers by the superposition method, each layer thickness is about hundreds of nanometers.
Rainbow film is a kind of stretch material, we POLYSAN is professional manufacturer for TPU/PVC iridescent transparent film