Reflective film is a specialized PVC material that utilizes optical principles to reflect light back to its source. It consists of multiple layers, including a weather-resistant thin film, tiny glass beads, a focusing layer, a reflective layer, an adhesive layer, and a removable backing. This structure allows the film to effectively enhance visibility in low-light conditions, making it ideal for various safety and signage applications.
Key quality indicators of reflective film include the material’s durability, the reflection coefficient of the glass beads, the beading rate, the number of non-functional beads (dead beads), color uniformity, resistance to environmental factors, and the adhesion strength of the bonding layer.
Reflective films are categorized into different grades based on their performance: Diamond Grade, High-Strength Grade, Engineering Grade, and Economy Grade. Each grade offers varying levels of brightness, durability, and suitability for specific applications.
Engineering Grade Reflective Film is classified as the fourth-grade reflective material under the JT-T279-1995 standard issued by China's Ministry of Communications. It is a long-lasting, sealed film that has been widely used in traffic signs since the 1950s. Although less bright than higher grades, it remains suitable for areas with lower traffic volume and slower-moving vehicles. It is commonly used for signs on primary, secondary, tertiary, and fourth-class roads, as well as temporary signage. Available in pressure-sensitive and heat-activated types, it can be customized using screen printing technology with compatible inks.
This type of film typically lasts between 3 to 7 years, depending on the manufacturer. Some brands offer options for 3, 5, or 7-year lifespans, with brightness retention at least 50% after 7 years. It is best applied on aluminum or steel substrates and requires installation at temperatures between 18°C and 28°C.
High-Strength Grade Reflective Film falls under the third-grade classification of the same standard. It is significantly brighter—up to three times more visible than Engineering Grade—making it ideal for high-traffic areas such as expressways and major roads. Its enhanced brightness ensures clear visibility even at larger angles or in bright environments, improving road safety for drivers. It is also available in pressure-sensitive and heat-activated versions, allowing for versatile design options through screen printing.
With a typical lifespan of 10 years, this film maintains at least 80% of its initial brightness under normal conditions. It is suitable for both permanent and temporary signage and is commonly used for guide, warning, and prohibition signs, as well as general advertising displays. Installation should occur within the temperature range of 18°C to 28°C, and it works best on aluminum or steel base plates.
Diamond Grade Reflective Film represents the highest level of performance, falling under the first and second-grade classifications of the JT-T279-1995 standard. Unlike traditional glass bead-based films, it uses advanced microcube technology to achieve superior retroreflection. Each square centimeter contains over 930 microcubes, which are sealed to create an internal reflection effect without the need for a metal reflective layer. This results in a brightness level more than six times that of Engineering Grade and three times that of High-Strength Grade.
Known for its exceptional clarity and wide-angle visibility, Diamond Grade film is ideal for high-speed highways and urban roads where maximum visibility is critical. It retains at least 50% of its initial brightness after 10 years of use. Like other grades, it supports screen printing with standard inks, enabling detailed and customizable designs. It is commonly used for traffic signs, safety markers, and public information boards.
This premium film is also compatible with aluminum and steel base plates and requires installation within the standard temperature range of 18°C to 28°C. Its long-term reliability and high-performance characteristics make it the preferred choice for critical signage applications.
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