Currently the most popular international ultra-light frame material TR-90 (plastic titanium), with super toughness, xxx degree, impact and wear resistance, low friction coefficient and other characteristics, can effectively prevent in the movement, due to the frame breakage, friction on the eyes and face caused by the injury.
Because of its special molecular structure, good chemical resistance, not easy to deform under high temperature environment, short time can withstand 350 degrees high temperature, not easy to melt and burn. No chemical residue is released, which meets the European requirements for food-grade materials.
Compared with nylon material, TR-90 material frames have the following characteristics:
1. Light weight: about half of the weight of the frame with less and plate, 85% of the nylon material, which reduces the burden on the nose bridge and ears, and makes the wearing of the frames more lightweight and comfortable.
2, bright colors: more bright and excellent colors than ordinary plastic frames.
3. No chemical residue release, meet the European requirements for food grade materials. TR90 frame surface lubrication, density 1.14-1.15, put in salt water will float, lighter than other plastic eyeglass frames, about less than half of the weight of the plate frame, is 85% of the nylon material,
4, can reduce the bridge of the nose, ears, suitable for teenagers to use. TR90 material made of wear-resistant products, good chemical resistance, solvent resistance, weather resistance, not easy to combustion, high temperature resistance. TR90 is memory polymer material, anti-deformation index 620kg/cm2, not easy to deform.
Expanded Information
TR90 applications
1, automotive
Automotive electr. and electronics, lighting, cooling and climate control, fuel systems, powertrains, and chassis
2, appliances and electronics
Electrical appliances, electromechanical devices, connectors Lighting, cell phones and other portable devices
3, Industrial and consumer products
Heating systems, household goods, hydraulics and pneumatics, mechanical engineering, medical equipment, power transmission, sanitation, water and gas supply, sports and leisure, tools and accessories
4, Optics
Lenses, optical components, safety glasses, sunglasses, spectacle frames
5, Packaging
Non-directed film, cosmetics, personal care, medical packaging
6, Food contact
EU requirements, FDA
7, Medical
USP VI, FDA
8, Water contact
National Science Foundation (NSF)'s '61, KTW. WRAS, DVGW W270
Reference source? Baidu Encyclopedia-TR90
? Baidu Encyclopedia-EMSTR90