Sheffield Plastics Polycarbonate Flat Sheet are considered unbreakable

Polycarbonate products offer a balance of useful features including high temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastics and engineering plastics.
Polycarbonate is a very durable material. Even though it features very high impact-resistance, it possesses reduced scratch-resistance and so a hard coating typically is applied to polycarbonate eyeglasses as well as polycarbonate exterior motor vehicle components. The properties associated with polycarbonate are along the lines of those of Acrylic PMMA materials, although polycarbonate is actually 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 many different types of glass.
Polycarbonate has a glass transition temperature of approximately 150 °C (302 °F), consequently it softens gradually above this point and flows above about 300°C (572 °F). Tools must be held at warm to high temperatures, generally above 80 °C (176 °F) for making strain- and reduced stress products.
Unlike many thermoplastics, polycarbonate can undergo massive deformations without cracking or breaking. For this reason, it can be processed and formed   at room temperature using sheet metal techniques, such as forming bends with a brake. Even for sharp angle bends with a tight radius, no heating is generally necessary. This makes it attractive prototyping applications where transparent or electrically non-conductive parts are needed, which can not be made from sheet metal. Remember that PMMA/Plexiglas, that is similar in looks to polycarbonate, but it's brittle and cannot be bent at room temperature.

The light weight of polycarbonate, compared to glass, has led to growth and development of electronic display screens that replace the traditional glass with polycarbonate, for use in mobile and portable devices. Such displays include newer e-ink and a few LCD screens, though CRT, plasma screen and other LCD technologies generally still require glass for its higher melting temperature and its ability to be etched in finer detail.
Other types of items produced from 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 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 could be needed. This can be a coating (e.g. for improved abrasion resistance), or perhaps the coextrusion for enhanced weathering resistance.
Bayer Makrolon Polycarbonate is a thermoplastic that starts as a solid plastic material in the form of small pellets. In a manufacturing process called injection molding, this pellet material is heated until they melt. The melted 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 create a finished product in a matter of minutes.

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