Besides the style, the size, the gender distinction, the shape (full-frame, semi-frame or rimless) of lens frame, the material of lens frame is another critical consideration while eyeglasses wearers selecting their favorable pairs of lens frame eyeglasses. Lens frames can be made of generally three categories of materials: plastic, metal and unusual materials lens frame.
The commonly used types of plastic lens frames made of zly, nylon and cellulose acetate propionate (nylon-based). As different types of plastic do have their own features, the universal advantages of plastic lens frame lie in that it’s lightweight, relatively cheaper, and easy to manufacture. Drawbacks also exist so that certain group of people may reject plastic lens frames. Just to list some of them, fragile (easy to break), melting under extreme hot, sunlight-aging and color-fading etc..
Much more alternatives are available should you prefer metal lens frame, such as monel, titanium, beryllium, stainless steel, flexon (memory metal lens frame), aluminum and so on. Some of them are pure metals while others are mixtures of several metals, named alloys. Metal lens frame is mostly formal and classic thus suitable for businessmen and political leaders, most of which are strong, flexible, and corrosion-resistant and also provide colorful choices. However, for youngsters, metal lens frames may be dull, old-fashioned and lack of innovation.
Extraordinary materials for lens frames also occupy certain market proportion, because they meet the unusual tastes of style pursuers. Don’t be curious if you discover lens frames made of silver, gold, wood, bone, buffalo horn, leather and even stone, for sometimes they seize the most attractive places of eyeglasses retailers.