TR90

TR-90 is a trademarked name for a nylon-based thermoplastic material commonly used in eyewear frames. Developed as a lightweight, flexible alternative to traditional plastics, TR-90 frames are marketed for comfort, resilience, and ease of molding into varied shapes. The material is a polyamide with high elasticity, allowing frames to bend during use and return to their original form.

Key properties of TR-90 include low density, good impact resistance, and strong memory, which helps frames maintain fit after repeated flexing. It offers chemical and sweat resistance, enabling longer wear with reduced risk of corrosion or staining. TR-90 accepts a wide range of colors and finishes, and it can be processed by standard thermoplastic methods such as injection molding and extrusion, then assembled into complete eyeglasses or sunglasses.

TR-90 frames are widely used across mid-range to premium eyewear markets. They are typically lighter than many traditional plastics, contributing to all-day comfort, and are compatible with various accessories, such as nose pads and temple tips. While durable, TR-90 can be susceptible to surface scratching like other plastics, and nylon-based materials may absorb some moisture over time, which can cause minor dimensional changes in extreme conditions.

Care guidelines for TR-90 frames are similar to other plastic eyewear: clean with mild soap and water or an approved eyewear cleaner, dry with a soft cloth, and avoid prolonged exposure to high heat or harsh solvents to preserve color and shape.