How many barrels of oil does it take to make a ton of plastic bags? If you just reached for your calculator, you might have fallen for one of the biggest misconceptions to ever sweep across the green blogosphere.
The fact is that most plastic bags are not made from oil.
So, What Are Plastic Bags Made From Then?
Plastic bags are made from ethylene, a byproduct of natural gas. Chemists string together long chains of ethylene to form polyethylene. Depending on the process used to create the chains different densities of polyethylene can be produced.
The bags you are given at retail and grocery stores checkouts are High Density Polyethylene or HDPE. They are fairly sturdy, able to hold quite a bit of weight without breaking, optically cloudy, and can be dyed any color.
Low Density Polyethylene or LDPE are optically clear bags, very light, and often described as wispy. These bags are likely to be found in the produce market or covering your clothing at a dry cleaner.
Where Does Natural Gas Come From?
Unlike oil, which the United States currently imports an estimated 70% of, we produce 82% of our own natural gas. The remaining 18% is imported from Canada and Mexico.
http://thegreenroutine.net/plastic-bags-not-made-from-oil/