Long answer: Polymethyl methacrylate, which is an acrylic based thermoplastic also known as unprocessed plastic.

The defense: Though not perfect, it is a step in the right direction. Many of the large plastics processors who produce solid resin countertops also produce the laminates for laminated “Formica” type countertops. The increased popularity and availability of solid stone countertops has put a bit of a dent into the business that was virtually monopolized by giant plastics companies for decades. What this means is that the resin in Sile Stone requires plastic but not nearly as much as lamanites and not as much as other manufactured stone produces who use resins made completely of plastic.