Polycarbonate plastic materials offer a balance of beneficial features this includes temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastic materials and engineering materials.
Polycarbonate is a very rugged material. Whilst it features increased impact-resistance, it has got low scratch-resistance and thus a hard coating may be applied to polycarbonate eye wear and polycarbonate exterior automotive equipment. The properties associated with polycarbonate tend to be along the lines of those of polymethyl methacrylate (PMMA, acrylic), except 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 about 150 °C (302 °F), so it softens gradually above this point and flows above about 300°C (572 °F). Tools need to be held at higher temperatures, generally above 80 °C (176 °F) to help make strain- and stress-free products.
Unlike most thermoplastics, polycarbonate can undergo dramatic changes in basic shape without cracking or breaking. Due to this fact, it could be processed and formed  cold using standard sheet metal techniques, which include forming bends on a brake. For even 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 required, which may not be crafted from sheet metal. Keep in mind that PMMA/Plexiglas, that is similar in looks to polycarbonate, but is brittle and cannot be bent with out a heating process.
The light weight of polycarbonate, unlike glass, has led to development of electronic display screens that replace glass 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 still generally require glass for its higher melting temperature and its ability to be etched with finer detail.
Other types of items manufactured 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 made 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 could be needed. This either can be a coating (e.g. for improved abrasion resistance), or as 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 begin to melt. The melted liquid polycarbonate is then rapidly pushed into molds, compressed under high pressure and cooled to form a finished product , that only takes about a minute to complete.
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