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by mumblemumble 2464 days ago
I'm pretty sure it's paper. From their FAQ:

Our tea bags are manufactured through a totally chlorine-free (TCF) process, meaning that no dioxin is released into the environment. Plus, they never contain starch or gluten, and they're completely biodegradable and compostable—making them better for you and for our planet.

1 comments

From: http://www.celestialseasonings.com/product-safety-facts

"On packaging, it’s important for you to know that our tea bag paper is made of a blend of natural, chlorine-free fibers, and does not contain epichlorohydrin."

The sentence comes off as a little evasive. It would have been better if they said exactly what the bags are made of. It seems reasonable to conclude they are plastic-free but I don't think you can be 100% sure unless it's explicitly stated.