TWO16
IN FOCUS

Reaching bursting point

Laurence Newman MEng. (Hons) Torus Measurement Systems, Telford, United Kingdom And contributions by Phil Brannon, ColorMatrix

This article details the importance of understanding a PET bottle’s mechanical properties, particularly with the continued developments in Lightweighting, Recycled PET and Barrier Technology. It demonstrates how the data from a standard burst test can be used to explore stress-strain curves, fracture point, elastic & plastic regions, Young’s modulus and intrinsic viscosity to gain a more detailed overview of the finished bottle.