Polyethylene Terephthalate (PET) is a plastic resin used to make bottles for beverages, food, and other household and consumer products. PET is a relatively new packaging resin. The PET bottle was patented in 1973. Four years later, the first PET bottle was recycled.
For many years, soft drink bottles were the biggest user of PET resin. “Custom” bottles are used for other products such as salad dressing, peanut butter and jellies. Custom bottles now account for more than h