The development history of reflective films?
Development history of reflective materialsIn 1950, Chinese American scientist Dr. Dong Qifang developed Directional Glass Beads, and then developed reflective cloth and other reflective materials. In 1968, the American ROWLAND brothers invented and registered micro prism reverse reflection technology. Reflective film products by the United States 3M company pioneered the development of success, so far only the United States, Japan, China, South Korea and a few countries can produce
Reflective films have been used for a long time in developed countries, and their excellent optical properties and outstanding social and economic value have been widely recognized and accepted. Similarly, this has aroused the full attention of many scientists and technicians in the field of Optics and traffic safety. In 70s, Chinese optical metrology academy teacher Yang Yonggang, will introduce the structure principle, performance oriented reflection film optical characteristics, performance testing and other technical documents to China, then many scientific research institutes, colleges and universities have been put into the research of the reflective film series of product development.
For example, the Ministry of communications, highway Science Research Institute, Chinese Academy of Sciences, optical Institute and other research institutes have organized experts and special funds, and set up a research team to carry out the project research. These early experts and researchers poured a lot of effort into the reflective materials, and achieved certain stage results, and basically explored the reflective materials
