Sheffield Plastics Polycarbonate Flat Sheet are considered unbreakable

Polycarbonate materials give you a balance of helpful features which include high temperature resistance, impact resistance and optical properties position polycarbonates between commodity plastic materials and engineering plastics.
Polycarbonate is definitely a tough material. Whilst it offers tremendous impact-resistance, it's got lower scratch-resistance and so a hard coating may be applied to polycarbonate eye protection lenses as well as polycarbonate exterior automobile components. The properties relating to polycarbonate are like those of polymethyl methacrylate (PMMA, acrylic), except polycarbonate definitely is 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 several types of glass.
Polycarbonate has a glass transition temperature of around 150 °C (302 °F), as a result it softens slowly above this point and flows above about 300°C (572 °F). Tools should be held at higher temperatures, generally above 80 °C (176 °F) to make strain- and reduced stress products.
Unlike almost all other thermoplastics, polycarbonate can undergo large shape changes without breaking. Because of that, it could be processed and formed   cold using sheet metal techniques, for instance forming bends with a brake. For even sharp angle bends having a tight radius, no heating is generally necessary. This makes it attractive prototyping applications where transparent or electrically non-conductive parts are important, which can't be made from sheet metal. Note that PMMA/Plexiglas, that is similar in appearance to polycarbonate, but is brittle and cannot be bent unless it is heated.

The light weight of polycarbonate, as opposed to glass, has led to advancement of electronic touch screens that replace glass materials with polycarbonate, for use in mobile and portable devices. Such displays include newer e-ink and many LCD screens, though CRT, plasma screen and other LCD technologies generally still require glass for its higher melting temperature and the ability to be etched in finer detail.
Other kinds of items manufactured from Polycarbonate include durable, lightweight luggage, MP3/digital audio player cases, computer cases, police riot shields, instrument panels, and common style blender jars. Many toys and hobby items are produced from 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 either 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, the pellets are heated until they begin to melt. The melted liquid polycarbonate is then rapidly injected into the mold - shaped like the part, compressed under high pressure and cooled to form a finished product in a matter of minutes.

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