BS EN ISO 11963:2012 download free.Plastics - Polycarbonate sheets - Types, dimensions and characteristics. This International Standard specifies the requirements for solid, flat extruded sheets of polycarbonate (PC) for general applications. It applies specifically to sheets made of poly(p,p’-isopropylidene-diphenyl carbonate). The sheets may be coloured or colourless, and they may he transparent, translucent or opaque. The sheets may also have...