What is PVC? What is Vinyl?

PVC is an acronym of the  words PolyVinyl Chloride, which is the full name of the polymer that is used to make Vinyl Sheets and Film.  So the term Vinyl and PVC both refer to the same class of material.  Flexible Vinyl Film is the kind of material your Grandmother used to put over her good living room furniture.  Those clear blister packs around consumer goods that are impossible to open without a knife is thermoformed rigid Vinyl Sheets.