The principle of rainbow film: It is a transparent film with a thickness of 15-25 microns. The main color systems include three series of products: red-bottom green light, blue-bottom gold light, and blue-bottom purple light.
It is formed by layering and superimposing polymers with different refractive indices and extruding them into films. This kind of multi-layer co-extruded film, which is composed of 100 to 200 layers and each layer is only a few nanometers thick, has a colorful color effect based on the principles of optical refraction, interference, and reflection. When the reflection band is in the wavelength range of light, a rainbow phenomenon occurs. The color reflected by the rainbow film is determined by the wavelength of the reflected light.
Therefore, it shows colorful and brilliant colors. The rainbow film is also called colorful film, colorful film, fantasy film, laser rainbow film, etc.
The use of rainbow film: It is mainly used for surface decoration, packaging, and trademarks. For example: the surface decoration of color printing advertisements can be compounded with paper, PET, PVC, OPP, non-woven fabrics, artificial leather, etc., and the surface of the compounded material is shiny. The colorful and magical special effects can also be used alone for flowers, gift packaging, and craft gift packaging. The rainbow film can also be crushed into snowflake shapes and applied to Christmas craft trees and Christmas gifts.
