Polypropylene and Paper

Most brands of bagged tea contain plastic. With millions upon millions of cups consumed daily, this adds up to a lot of plastic.
In order for the tea paper bags to seal up and keep their shape in hot liquid, a plastic polymer, namely polypropylene, must be added. Even though the amounts of plastic found in tea bags is minimal and vary between manufacturers it adds up to quite a bit when you look at the big picture.