Lexan Polycarbonate Flat Sheet are considered unbreakable

Polycarbonate products offer a great blend of helpful features including temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastic materials and engineering plastic materials.
Polycarbonate is definitely a rugged material. Whilst it offers greater impact-resistance, it possesses low scratch-resistance and thus a hard coating could be applied to polycarbonate eyeglasses lenses and polycarbonate exterior auto components. The properties associated with polycarbonate are similar to those of polymethyl methacrylate (PMMA, acrylic), although 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 it has better light transmission characteristics than many different types of glass.
Polycarbonate carries a glass transition temperature near 150 °C (302 °F), in order that it softens gradually above this point and flows above about 300°C (572 °F). Tools need to be held at high temperatures, generally above 80 °C (176 °F) in order to make strain- and stress-free products.
Unlike almost all other thermoplastics, polycarbonate can undergo dramatic deformations without breaking. Due to this fact, it can be processed and formed   at room temperature using standard sheet metal techniques, such as forming bends with a brake. For even sharp angle bends with a tight radius, no heating is usually necessary. This makes it attractive prototyping applications where transparent or electrically non-conductive parts are needed, which can't be made from sheet metal. Note that PMMA/Plexiglas, which is similar in looks to polycarbonate, but is brittle and can't be bent at room temperature.

The light weight of polycarbonate, compared with glass, has led to growth and development of electronic touch screens that replace the traditional glass with polycarbonate, for use in mobile and portable devices. Such displays include newer e-ink and some 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 miscellaneous items made out of Polycarbonate include durable, lightweight luggage, MP3/digital audio player cases, computer cases, police riot shields, instrument panels, and blender jars. Many toys and hobby goods 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 either can be a coating (e.g. for improved abrasion resistance), or as a coextrusion for enhanced weathering resistance.
The Makrolon Polycarbonate is a thermoplastic that starts as a solid material in the form of small pellets. In a manufacturing process called injection molding, the pellets are heated until they melt in to a thick liquid. The liquid polycarbonate is then rapidly pushed 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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