Glass microspheres for high-refractive-index RI 1.93 reflective yarn

Reflective materials, with their bright colors during the day, provide conspicuous visual warnings. At night or in low‑light conditions, their luminous reflective properties effectively enhance visibility, enabling drivers and pedestrians to clearly identify objects and remain alert, thereby helping to prevent accidents, reduce casualties, and minimize economic losses. As an indispensable safety safeguard on roadways, they deliver significant social benefits.

Reflective yarns use glass microspheres made from high-refractive-index glass, offering excellent retroreflective performance. The products meet the optical performance requirements of EN 20471 and comply with material safety standards such as REACH, OEKO‑TEX, and EN 71 for toys. Reflective fabrics—such as reflective cloth, reflective thread, and reflective tape—are widely used in personal safety and civilian protective applications. These microspheres feature spherical shapes with smooth surfaces, a stable refractive index that facilitates precise focus control, and a uniform particle-size distribution. Made from titanium‑barium glass, they are lead‑free and harmless to humans.

 

Application areas

　　Reflective fabrics, reflective leather, reflective logos, heat-transfer films, and more.

 

Product Features

• The material is safe and complies with REACH, EN71 for toys, and OEKO-TEX standards for infant products.
• Spherical particles with ultra-clean surfaces exhibit excellent optical properties.
• Excellent engineering adaptability, meeting customer requirements.

 

Technical Specifications

Product Name	RI 1.93 glass beads
Brand	Bolili
Refractive index	1.90~1.93
Specific gravity	4.2±0.1 g/cm³
Roundness ratio	≥95%
Defect rate	≤3%
Packaging method	25 kg/paper drum 250 kg/steel drum

 

 

 

 

 

 

 

 

 

 

 

Application scenarios

Reflective fabric

 

Reflective vest