Sheffield Plastics Polycarbonate Flat Sheet are considered unbreakable

Bayer Makrolon Polycarbonate materials give you a balance of useful features this includes temperature resistance, impact resistance and optical properties position polycarbonates between commodity plastics and engineering plastics.
Polycarbonate is a very sturdy material. Even though it features outstanding impact-resistance, it has got a lower scratch-resistance and thus a hard coating can be applied to polycarbonate eye protection as well as polycarbonate exterior automobile equipment. The characteristics relating to polycarbonate tend to be similar to those of polymethyl methacrylate (PMMA, acrylic), yet , polycarbonate is always 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 has better light transmission characteristics than many kinds of glass.
Polycarbonate has a glass transition temperature of approximately 150 °C (302 °F), so it softens slowly above this point and flows above about 300°C (572 °F). Tools should be held at warm to high temperatures, generally above 80 °C (176 °F) to make strain- and almost stress free products.
Unlike most thermoplastics, polycarbonate can undergo massive shape changes without cracking or breaking. Because of that, for small changes in shape, it can be processed and formed   at room temperature using sheet metal techniques, such as forming bends with a brake. For even sharp angle bends with a tight radius, no heating is generally necessary. This makes it valuable in prototyping applications where transparent or electrically non-conductive parts are necessary, which should not be created from sheet metal. Please keep in mind PMMA/Plexiglas, which happens to be similar in appearance to polycarbonate, but is brittle and cannot be bent at room temperature.

The light weight of polycarbonate, compared to glass, has led to advancement of electronic display screens that replace the traditional glass with polycarbonate, for use in mobile and portable devices. Such displays include newer e-ink as well as LCD screens, though CRT, plasma screen and other LCD technologies which still require glass for its higher melting temperature and its 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, riot shields, instrument panels, and 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 subjected to weathering or UV-radiation, a special surface treatment maybe needed. This may be a coating (e.g. for improved abrasion resistance), or as a coextrusion for enhanced weathering resistance.
The Makrolon Polycarbonate is a thermoplastic that begins as a solid material in the form of small pellets. In a manufacturing process called injection molding, these small pellets are heated until they melt in to a thick liquid. The liquid polycarbonate is then rapidly injected into a mold with the empty part being the size and shape of the part you want, compressed under high pressure and cooled to form a finished product , all in just a minute or so.

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