Rainbow film is a stretchable material, in the late 1980s, Taiwan introduced the product technology and began to promote to the mainland. After 2005, China began to independently produce rainbow film products.
Rainbow film is divided into original imported rainbow film and domestic rainbow film.
The imported rainbow film is produced by a biaxial drawing machine, and the product is more uniform and the strength is higher, but the imported product is currently priced at about 150 yuan per kilogram. Domestic ordinary rainbow film price is about 35 yuan /KG, the gap between the two is huge. Among them, the domestic 36u biaxial tensile rainbow film products developed by Shantou Guansheng Plastic Co., LTD., the performance is very close to the imported products, but the price is less than half of the imported products.
The thickness of the rainbow film is between 16u-36u, and the main color system includes three series of products: red background green light, blue background golden light, blue background purple light. Rainbow film is a multi-layer film, it makes full use of the principle of light interference, in the light irradiation, the refraction between the layers and interference between the layers of multi-angle layer color change, like the sky rainbow effect. The magic effect of rainbow film is that the rich light effect of the rainbow film substrate itself at different distances and different angles will show completely different magic effects.