Lexan Polycarbonate Sheeting are considered unbreakable

Makrolon Polycarbonate products have a unique balance of helpful features which include temperature resistance, impact resistance and optical properties position polycarbonates in between commodity plastic materials and engineering plastic materials.
Polycarbonate is definitely a high quality material. Although it has high impact-resistance, it has reduced scratch-resistance and thus a hard coating could be applied to polycarbonate eyeglasses lenses as well as polycarbonate exterior motor vehicle equipment. The characteristics relating to polycarbonate are along the lines of those of Acrylic PMMA materials, and yet polycarbonate is undoubtedly 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 kinds of glass.
Polycarbonate has a glass transition temperature of about 150 °C (302 °F), as a result it softens gradually 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 help make strain- and stress-free products.
Unlike most other thermoplastics, polycarbonate can undergo dramatic deformations without cracking or breaking. For this reason, it could be processed and formed   cold using standard sheet metal techniques, for instance forming bends on a brake. For even 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 needed, which can not be crafted from sheet metal. Understand that PMMA/Plexiglas, which happens to be similar in appearance to polycarbonate, but it's brittle and can't be bent unless it is heated.
Polycarbonate is often utilized in eye protection, and also in other projectile-resistant viewing and lighting applications that would normally require the use of glass, but require much higher impact-resistance. Several types of lenses are produced from polycarbonate, including automotive headlamp lenses, lighting lenses, sunglass/eyeglass lenses, swimming and SCUBA goggles, and safety glasses for use in sporting helmets/masks and police riot gear. Windscreens in small motorized vehicles are typically constructed from polycarbonate, such as for motorcycles, ATVs, golf carts, and small planes and helicopters.

mechanical plastic sheeting