PRISM: Plastic packaging Recycling using Intelligent Separation technologies for Materials
PRISM is a process for rapidly automatically sorting packaging based on intelligent labels with invisible markers. Codes are written using luminescent materials, typically inorganic phosphors. At the recycling facility the articles are subject to excitation radiation of a specific wavelength and a few seconds/milliseconds later are subject to infra‑red detection as currently. This 2‑step process can identify articles according to the codes and sort them as specified. The benefits include increased recycling rates, the ability to sort articles by their end use (food, non-food) and composition increasing the value of such plastic. Incorporation into existing recycling facilities is easy and cost‑effective with a limited need for capital investment.