The Resin Identification Code (RIC) system
The Resin Identification Code (RIC) system, which separates plastic resins into seven groups, was introduced by the Society of the Plastics Industry in 1988. Number 1 – Polyethylene Terephthalate (PETE or PET) was invented and patented by J. Rex Whinfield and James T. Dickson in 1940 whilst working for Calico Printers Association; called Terylene it was first manufactured by ICI.…
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