Glasses Frame Classification
According to a common frame materials，eyeglasses frames can be divided into plastic frames, metal frames and mixed frames.
1. Plastic Frame: Its features are: light weight, easy to allergies, more than by the elderly, and children. But now they are welcomed as the prescription sunglasses or decorative objects At present plastic frame are made from acetate resin. Thick materials are mostly transparent pigment, there is also an three-tier or multi-layer plastic production.
2. Metal Frame: Its features are: strong, lightweight, beautiful, fashionable and various styles . Metal frames are made of a multi-use metal material or alloy. Multi-copper alloy is the basic materail, and then they are often to be gold-plated. There are Titanium Frame, as well as memory alloy frames. Metal frames are basically entrusted with the nose, and nasal for children who are always very active, in order to accommodate a variety of nose shape. tempel is often put on with the end-pin plastic, not only vary beautiful, but also serve to protect the role of temple and the skin.
3. Mixed Material frame: Its features are: sleek, beautiful, giving people a sense of elegance. A result of the outer plastic is close contact with inner layer of metallic materials, it is not easy to be burned, increasing the strength of frame. Multi-material hybrid materials, metal frame and plastic blend.Others in different parts of frames use different materials.
Second, frame shape are mainly divided into full-frame, semi-rimless frame, rimeless frame, eyebrow frame, combined frame and folding frame.
1. Full frame Frame: All frame is relatively common frame type, characterized by easy to be shaped. May cover part of thickness of the lens
2. Semi-rimless Frame: Semi-frame utilize a very thin nylon thread to make part of the frame edge of the lens with a special Grinding the lower edge of its polished, the lower edge there is a narrow ditch, so the nylon filaments are embedded, to form a frame. At the end of frame style, characterized by light weight, gives a unique sense of light, but also more solid.
3. Rimless Frame: there is no lens rim, only the metal bridge of the nose and metal temples. Lens and nose bridge is directly fasten by screws. Rimless frame is more compact than the average, but generally somewhat less intensity compared with the full-frame.
4. Eyebrows frame: eyebrows frame and semi-rimless frame is similar to the first half of frame that there is only a circle similar to the eyebrows wire, with a very thin nylon thread to make the next part of the frame edge. Now it is a very fashionable style.
5. Combination Frame: Combination frame has two lenses, for indoor and outdoor using.
6. Folding Frame: Frame can be folded into four fold, mostly for reading glasses. And it is the most convenient frame above all.
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