A lot of cardboard packaging incorporates plastic layers in them -- something people seem not to know. For example, your Starbucks cup is covered in plastic fi

A lot of cardboard packaging incorporates plastic layers in them -- something people seem not to know. For example, your Starbucks cup is covered in plastic film and is generally not recyclable. It actually contains more plastic than straws do, which are now being banned in many cities. The same is true for things like milk cartons or juice boxes. Even your aluminum soda can has plastic in it.