The ranks of polarized lenses go roughly like this: cheaper glasses use acrylic or acetate material with a polarized film in between, better glasses use glass with injection-molded polycarbonate ...

Cheap glasses generally use acrylic or acetate material with a polarized film in between. “They use heat to form it into the spherical shape of a lens, and then they cut the lens,” Barton explains.

Block-cut acetate makes colors and patterns appear richer and more variegated than regular, injection-molded plastic, the most common material used for inexpensive sunglasses. Indeed, the Keyhole ...

These days, acetate can be found in the lining of wedding dresses, in sunglasses, upholstery, umbrellas, and even cigarette filters. You may be wondering: What is this material that can be used so ...

The frame of these sunglasses is made from a strong yet lightweight alloy metal and is reinforced with an acetate stem for ... scratch-resistant polycarbonate material. The lenses are also ...