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Plastic eyeglass frame

Eyeglasses include a frame, usually made of metal, plastic or combinations thereof, and a pair of optical lenses, mounted to the frame. The lenses may be prescription. They may also be coated and/or tinted different colors, to various degrees, to act as sunlight attenuators. An eyeglass frame has a front part for supporting lenses or being supported by lenses, a pair of temples, and a pair of hinges for connecting the front part with a pair of temples. An eyeglass frame also has a pair of nose pads located between left and right lenses, and a pair of end pieces to be mounted to a pair of temples. The nose pads contact a user's nose, and a pair of end pieces contact user's ears, thereby the eyeglasses being supported on user's head. If an eyeglass temple is entirely made of metal, use of such eyeglasses makes a user feel cool and hard around his ears, giving him an unpleasant feeling. To avoid this unpleasant feeling, the temple's end that engages with user's ear is covered with a plastic member, i.e., an end piece. Eyeglass frames are produced in a wide variety of shapes depending on the design of the frames. The corresponding eyeglass or ophthalmic lenses that will be mounted in the eyeglass frames must be shaped to have a conforming perimeter corresponding to the frame into which they will be mounted. The majority of eyeglass frames manufactured today include a lens supporting structure to which two temples are pivotably attached by means of a hinge assembly. The hinges can be metal or plastic, and a pin secures the hinge member of the lens support to the hinge member of the temple. The hinge members are glued, screwed or fastened by some other means to the lens support and temple. In plastic eyeglass frames, the lenses are often replaced and secured by softening the frame with heat and thereafter inserting the lenses into the softened frame. So called non-pliable eyeglass frames refer to frames that are made of materials other than plastic, such as metal and the like. Eyeglass frames with edge are normally made of plastic as a monolithic structure, in which the lenses are clamped. Systems in which the lower part of the lenses is surrounded by a flexible plastic wire have also been contemplated, wherein this plastic wire is anchored in a system of holding holes arranged in an upper part of the frame, then clamped and subsequently cut to size.

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