"Plastic polymers" refers to a type of material made up of long chains of molecules called polymers, which can be molded and shaped into different objects. Full definition
With clothes, a lot of them are made from plastic polymer objects or cotton — plant materials. (sciencemag.org)
They plan to focus on an extrusion printer capable of building objects out of plastic polymers, but say that the printer could still make a huge number of the space station's $ 1 - billion - worth of spare parts. (scientificamerican.com)
While PVC stands for «polyvinyl chloride», a synthetic plastic polymer found in a lot of plastic products. (momvelous.com)