Bowls, cutlery, cups – any packaging that is in contact with food – needs a barrier to prevent water and oil from leaking through. Paper and molded fiber packaging have traditionally relied on a thin plastic film or the addition of fluorochemicals to hold out water and grease. Neither of these solutions is ideal, as plastic layers are not degradable and can be difficult to recycle. Fluorochemicals have been found to migrate into food and accumulate in our bodies, prompting them to be banned in many parts of the world.
