Lexan Polycarbonate Sheet are considered unbreakable

Polycarbonate plastic products give you a great blend of beneficial features including temp resistance, impact resistance and optical properties position polycarbonates between commodity plastic materials and engineering plastics.
Polycarbonate is a very long-lasting material. Although it features higher impact-resistance, it has a lower scratch-resistance and so a hard coating is applied to polycarbonate eye protection lenses as well as polycarbonate exterior auto components. The characteristics relating to polycarbonate are similar to those of Acrylic PMMA materials, although polycarbonate is going to be stronger, it is usable in a wider temperature range and is a bit more expensive. This plastic polymer is highly transparent to visible light and it has better light transmission characteristics than several types of glass.
Polycarbonate has a glass transition temperature of around 150 °C (302 °F), in order that it softens slowly above this point and flows above about 300°C (572 °F). Tools will have to be held at high temperatures, generally above 80 °C (176 °F) in order to make strain- and almost stress free products.
Unlike many thermoplastics, polycarbonate can undergo dramatic deformations without breaking. Therefore, it may be processed and formed   without needing to be heated using standard sheet metal techniques, which include forming bends with a brake. For even sharp angle bends having a tight radius, no heating is generally necessary. This makes it valuable in prototyping applications where transparent or electrically non-conductive parts are required, which cannot be crafted from sheet metal. Remember that PMMA/Plexiglas, that is certainly similar in looks to polycarbonate, but it's brittle and cannot be bent with out a heating process.

The light weight of polycarbonate, compared to glass, has led to development of electronic display screens that replace glass materials with polycarbonate, for use in mobile and portable devices. Such displays include newer e-ink and several LCD screens, though CRT, plasma screen and other LCD technologies which still require glass for its higher melting temperature and the ability to be etched with finer detail.
Other kinds of items made out of Polycarbonate include durable, lightweight luggage, MP3/digital audio player cases, computer cases, high impact riot shields, instrument panels, and common style blender jars. Many toys and hobby products are made out of polycarbonate parts, e.g. fins, gyro mounts, and flybar locks for use with radio-controlled helicopters.
For use in applications exposed to weathering or UV-radiation, a special surface treatment maybe needed. This can be a coating (e.g. for improved abrasion resistance), or a coextrusion for enhanced weathering resistance.
Bayer Makrolon Polycarbonate is a thermoplastic that begins as a solid material in the form of small pellets. In a manufacturing process called injection molding, this pellet material is heated until they melt in to a thick liquid. The liquid polycarbonate is then rapidly pushed into molds, compressed under high pressure and cooled to form a finished product in a matter of minutes.

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