How does plastic bag recycling work?
Like paper, plastic can be recycled, but it isn’t simple or easy. Recycling involves essentially re-melting the bags and re-casting the plastic, though, according to the U.S. EPA, manufacturing new plastic from recycled plastic requires two-thirds of the energy used in virgin plastic manufacturing. But, as any chef who has ever tried to re-heat a Hollondaise sauce will tell you, the quality isn’t quite as good the second time around; the polymer chains often separate break (thanks to reader MaryBeth for noting the difference between “separate” and “break” — the former implies that the chains can come back together, which they can’t), leading to a lower-quality product. What does that mean to you? Basically, plastic is often downcycled — that is, the material loses viability and/or value in the process of recycling — into less functional forms, making it hard to make new plastic bags out of old plastic bags. What about biodegradable plastic bags? Biodegradable plastic is a mixed bag
