2It turns out that those numbers aren’t random. Recyclable plastics have the numbers one to seven as a code for the type of plastic resin. This information won’t change how or what you recycle—you should follow your local rules—but it is helpful for those who collect, sort and process recycling, per greenmatters.com. Although the code is often mistaken as a universal sign of recyclability, collectors don’t accept every plastic type or number.
