Lexan Polycarbonate Flat Sheet are considered unbreakable

Bayer Makrolon Polycarbonate products give you a unique balance of useful features this includes high temperature resistance, impact resistance and optical properties position polycarbonates between commodity plastics and engineering materials.
Polycarbonate is definitely a high quality material. Whilst it offers considerable impact-resistance, it has got minimal scratch-resistance and thus a hard coating could be applied to polycarbonate eyewear lenses and polycarbonate exterior automotive components. The properties associated with polycarbonate are generally like those of common Acrylic materials, and yet polycarbonate is definitely 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 different types of glass.
Polycarbonate carries a glass transition temperature of about 150 °C (302 °F), as a result it softens slowly above this point and flows above about 300°C (572 °F). Tools must be held at high temperatures, generally above 80 °C (176 °F) to produce strain- and reduced stress products.
Unlike most thermoplastics, polycarbonate can undergo dramatic deformations without cracking. Because of that, it may be processed and formed   cold using standard sheet metal techniques, which include forming bends with a brake. Even for 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 important, which can not be created from sheet metal. Please keep in mind PMMA/Plexiglas, that is similar in looks to polycarbonate, but it is brittle and cannot be bent without heating.

The light weight of polycarbonate, in contrast to glass, has led to advancement of electronic display screens that replace 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, police riot shields, instrument panels, and blender jars. Many toys and hobby items are constructed from 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 perhaps the coextrusion for enhanced weathering resistance.
The Makrolon Polycarbonate is a thermoplastic that at the beginning, starts as a solid plastic 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. This 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 produce a finished product , all in just a minute or so.

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