Brief Introduction to reflective film

   1.The tapetum lucidum is a kind of reverse reflectance material which has been made into film and can be used directly. Using glass bead technology, micro prismtechnology, synthetic resin technology, film technology and coating technology and micro-replication technology. They are usually white, yellow, red, green, blue, brown, orange, fluorescent yellow, fluorescent orange, fluorescent yellow-green, and, abroad, fluorescent red and fluorescent pink.

   2.The reflective film is a kind of reverse reflectance material which has been made into film and can be used directly. In 1937, the world's first tapetum lucidum was born in an American laboratory. It is the starting point of large-scale use of reflective film in traffic signs. In 1939, a sign made of reflective film was used in the open air for the first time on the side of a highway in Minnesota in the United States. Since then, a new era of reflective products used in traffic signs has been opened, creating a new traffic safety industry. In that year, the use of reflective film for Traffic signs was officially specified in the National Standard for Traffic signs (Manual of United Traffic Control Devices, 1939).

   3.There are many ways to classify the tapetum lucida. Among them, the generally accepted classification principle is based on the basic structure of retroreflectance unit and the ranking method based on the retroreflectance coefficient of the front surface of the reflective film. But consider the difference in the tapetum lucidumprocess, some of which are specifically designed to address non-frontal inverse luminance, some of which are dual performance, and some of which are specific to visual requirements under adverse weather conditions. Therefore, this classification method also has some shortcomings. Therefore, it is very necessary to be familiar with and master the application conditions and design functions of various kinds of reflective films.