Vigilancia Tecnológica

A composition useful for additive manufacturing safety devices such as helmets is comprised of a melt blend of a polycarbonate and polycaprolactone and in particular a polycarbonate that is a copolymer of polysiloxane and polycarbonate, which may also be accompanied by domains of polysiloxane dispersed within the melt blend. The composition desirably is blended by melting the polycarbonate at higher temperature and then later introducing the polycaprolactone at a lower temperature under shear such as exhibited by a twin screw extruder.