Lady Vintage Acetate Optical Glasses

How to distinguish between acetate and plastic frame glasses: Board material and TR90 material eyeglass frames can be distinguished in several ways. First, one can differentiate them by their weight and flexibility. Board material frames tend to be heavier and less flexible, while TR90 frames are lightweight and extremely flexible. Additionally, the texture of the materials differs, with board material frames having a more solid and rigid feel compared to the smooth and flexible texture of TR90 frames. 

Another way to distinguish between the two is through visual inspection. Board material frames often have a more classic and traditional appearance, with visible seams at the joints, while TR90 frames typically have a more modern and seamless look due to their molding capabilities. Moreover, the durability of the materials differs, with TR90 being known for its impact resistance and ability to return to its original shape after bending, while board material frames are more susceptible to breakage. By considering these factors, individuals can effectively discern between board material and TR90 eyeglass frames when making their purchase decisions.