Cardboard take away coffee cups are coated inside with plastic, because, if not, the cardboard cup would soak and fall apart when filled with liquid. When the plastic lining of the take away cardboard coffee cup goes through the temperature change of being filled with the hot liquid, thousands of micro and millions of nano … Continue reading Plastic Lined Take Away Cardboard Coffee Cups: 25,000 micron-sized and 12 million nano-sized microplastic particles are released from the lining into your cup of coffee.