TR90 is a high-performance thermoplastic material widely acclaimed in the eyewear industry for its unique combination of strength, flexibility, and comfort. Technically classified as a type of polyamide (nylon), it is engineered to meet the rigorous demands of eyeglass frame design and functionality. Here’s a detailed overview:
Exceptional Flexibility and Memory: TR90 exhibits remarkable elasticity, allowing frames to bend, twist, or stretch under pressure (e.g., during accidental drops or adjustments) and return to their original shape without permanent deformation. This "memory" trait minimizes breakage risks, making it ideal for active users or children’s eyewear.
With a low density (approximately 1.14 g/cm³), TR90 frames are significantly lighter than metal or traditional plastic alternatives. This reduces facial pressure, enhancing comfort for all-day wear—especially beneficial for those with sensitive noses or ears.
Its robust molecular structure grants superior toughness, enabling it to withstand sudden impacts that might shatter other materials. This durability ensures longer frame lifespan, even with regular use.
TR90 performs stably across a range of temperatures (from -30°C to 120°C), resisting warping in extreme heat or cold. It is also less susceptible to damage from common chemicals like sweat, cosmetics, or mild cleaning agents compared to materials such as cellulose propionate.
The material is inert and non-irritating, making it suitable for users with sensitive skin or metal allergies. It avoids the skin reactions often associated with nickel or other alloys.
TR90 can be molded into sleek, thin profiles or bold, complex shapes via injection molding, supporting diverse styles from minimalist to sporty designs.
Its resistance to corrosion, discoloration, and deformation reduces the need for frequent repairs or replacements.
Some TR90 variants are recyclable, aligning with sustainable manufacturing practices.
In summary, TR90’s blend of flexibility, lightness, durability, and biocompatibility has made it a preferred choice for modern eyewear, particularly in active, casual, and everyday frames.
