Whatever evil fuck decided to integrate plastic into something they knew was going into boiling water to save .001 cents per bag should be blasted straight into the sun.

The study tested bags that were made out of nylon-6 and polypropalene. You should be able to check with your tea brand and see what they use. The brand I drink at home says their bags are 100% cellulose… which is, at least, a polymer also present naturally in the tea itself.