There are seven types of plastic out there, and sometimes the type you use can be very important, especially when it comes to health. Type 1 (PETE): Polyethylene terephthalate, when recycled, will be made into things like carpet, plastic bags, or even fleece. If trashed, PETE type will remain in a landfill forever because it can't biodegrade. Type 2 (HDPE): A higher density version of Polyethylene terephthalate made from petroleum. If recycled, HDPE can be recycled back into the same materials or into plastic lumber. HDPE is actually one of the materials used to line landfills, lasting for millions of years. Type 3 (V): Polyvinyl chloride, also known as Vinyl and PVC can be made into plastic lumber when recycled. The most common fate of the V type, however, is being trashed because it’s rarely accepted by recycling facilities. Type 4 (LDPE): Low-density polyethylene can be turned into new plastic bags or plastic lumber when recycled. It has low-density and a light weight nature.