TR-90 cp pc plastic glasses frame difference, as well as what is the material sheet! Physical properties how?
TR90 spectacle frame surface lubrication, the density of 1.14-1.15, on the saline will float, than other plastic glasses frame light, about half of the weight of the plate material, nylon material is 85%, can reduce the bridge of the nose, the burden of the ear, suitable for young people . It is very resistant to wear, good chemical resistance, solvent resistance, weather resistance is good, not easy to burn, high temperature. And it is memory of the polymer material, anti-deformation index 620kg / cm2, not easy to change because TR90 material Eyeglass frame elasticity, toughness, easy to break, strength, no rupture, so it has sports safety. And it is very resistant to impact: more than 2 times the nylon material, ISO180 / IC:> 125kg / m2 elasticity to effectively prevent In the movement due to impact on the eye damage. No chemical residue release, in line with European food-grade materials requirements.
TR90 material than other pc, cp and other frames material is much more expensive, and the production process is also more stringent, so TR90 glasses frame price than the other to be several times more expensive.
CP: refers to propionic acid frames
PC: refers to the plastic frames, made of polycarbonate
Material: The material is made of high-tech plastic memory plate. Ingredients: Most of the current sheet metal components are acetate fiber, there are a few high-grade frame is propionic acid fiber, while the acetate fiber sheet is divided into injection molding and pressing Type, injection molding is the name of the mold is made of water, but most of the current is to suppress the processing of sheet metal glasses in terms of the origin of the plate in France and Italy, the plate is better, Japan is also quite good, many high-end sheet glasses Based on these high-quality sheet, and therefore more reliable quality.
