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. PET is a transparent, sturdy, and lightweight plastic commonly used in the packaging of foods and beverages, particularly soft drinks and water and is one of the world’s most widely used plastics. PET is highly recyclable. It is commonly referred to as “polyester” when utilised in fibre or fabric applications.
Engineer Nathaniel Wyeth patented PET bottles in 1973 that could withstand the pressure of carbonated liquids
PET products can, when marked, be identified with the chasing arrows symbol with the number 1 inside.