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Reflective Heat Transfer Film Retroreflective Material

May 31, 2017

Reflective film, is a thin film can be directly applied to the retroreflective material. [1] made using glass bead technology, microprism technology, synthetic resin technology, thin film technology and coating technology and micro-replication technology. Usually white, yellow, red, green, blue, brown, orange, fluorescent yellow, fluorescent orange, fluorescent yellow-green, foreign and fluorescent red and fluorescent.

Reflective film is a thin film can be directly applied to the retroreflective material, but also the most widely used as a retroreflective material. [1] In 1937, the world's first reflective film was born in a laboratory in the United States. Is the starting point for the history of large-scale application of reflective signs. In 1939, in the United States Minnesota road side, the first time in the open air conditions using a reflective film produced signs, since then, opened a series of reflective products for traffic signs of the new era, creating a new Of the traffic safety industry. This year, the US traffic mark national standard (1939 edition of the United States "unified traffic control facilities manual", Manual of United Traffic Control Devices, 1939) formally provides that the use of reflective film manufacturing traffic signs. [3]

Since then, with the chemical industry, especially the development of synthetic resin, various research and development institutions continue to research and innovation, the use of glass beads technology, synthetic resin technology, film technology and coating technology, have developed a series of high-quality anti-reflective products.

Beginning in the 1940s, this originally fabricated reflective film was dubbed "engineering grade" reflective film, widely used for road traffic signs. [4] Since then, for the personal safety of clothing and other areas of the reflective film and a series of products, but also with the advent of synthetic resin, social development needs, have been developed. Since then, along with a series of materials and optical technology research results, especially the emergence of micro-prism reflective material, so that the original mainly used for traffic signs reflective material, began to be gradually updated, better reflective material instead.

Classification and technical standards.

Reflective film classification methods are many. The more commonly accepted classification principle is based on the basic structure of the retroreflective element, and the sorting method based on the inverse reflection coefficient of the front side of the retroreflective film. But taking into account the different processes of reflective film, some are specifically designed to solve the non-frontal retroreflective brightness, and some are both two aspects of performance, and some are for adverse weather conditions under the visual needs, so this classification method, also There are shortcomings. Therefore, familiar with and master a variety of reflective film application conditions and design functions, it is very necessary.

In the traditional habit, according to the reflective film reflective unit structure, the reflective film is divided into two categories, glass beads reflective film and micro-prism-type reflective film. Each type of reflective film also contains many types, such as micro-prism-type reflective film, due to the use of more advanced technology, its material selection and prism structure, have a lot of changes, can cope with more traffic needs. According to the prism form and technical characteristics, micro-prism-type reflective film can be divided into long-range retroreflective ability of the truncated prism reflective film, close to large angle retroreflective good angle prism reflective film, and take into account the The requirements of the full prism reflective film, daytime and bad weather conditions are good performance of the full prism reflective film, in line with the traditional engineering grade retro-reflective parameters of the prism-type reflective film and so on. Glass beads reflective film appeared earlier, but its process changes are relatively few, there are two types, one for the lens embedded reflective film, used to be known as the engineering-level reflective film; one for the capsule type, usually called For high-strength reflective film. In the lens-embedded reflective film, because of its long history, each different manufacturers, in the long manufacturing process, the use of the lens diameter, density, thickness of the different thickness of the coating, produced a variety of reflective film, Such as super-engineering grade reflective film, mainly in the engineering-level reflective film on the basis of the use of higher quality glass beads, and the density of glass beads increased to increase the brightness; commonly known as economic grade reflective film, mainly in China Production, is basically in the engineering-level reflective film on the basis of technology, by reducing the lens (glass beads) the number and density of the way to achieve the two reflective film, economic grade reflective film, the reflection capacity can not meet the needs of traffic safety , More is used in the commercial field, in the international arena rarely included in the traffic safety standards into the light.

Reflective film according to the type of adhesive, reflective film can be divided into heat-sensitive adhesive reflective film, pressure-sensitive adhesive reflective film and non-adhesive reflective film. The traditional reflective film used in the field of transportation facilities is mainly pressure sensitive adhesive. Pressure-sensitive adhesive, no heating, solvent or other preparation can be attached to the smooth, clean surface, traffic signs are generally attached to the aluminum or aluminum plate surface. The stickiness of the thermosensitive adhesive is only excited if it is heated and applied to the material. Non-adhesive reflective film, usually used for traffic cone reflective belt, temporary roll warning signs and facilities, such as reflective reflector belt made of materials.