The instant noodle paper barrel consists of a barrel body and an outer sticker. The barrel body is composed of food-grade cup paper and PE film. It is non-toxic and harmless when used correctly. External stickers generally use recycled paper that meets regulations and are used for printing product information and advertising.
Food-grade polyethylene (PE) is generally used as the innermost coating of instant noodle cups. Polyethylene is acid and alkali resistant and corrosion resistant. Polyethylene below 100 degrees Celsius will not release harmful substances. Food-grade polyethylene has higher heat resistance than ordinary polyethylene, and it is impossible to change and produce carcinogens.
As for the raw materials of paper barrels, experts pointed out: "The national standard "Paper Bowls" implemented in the mainland in 2012 clearly stipulates that "recycled raw materials should not be used" in the production of instant noodle bowls."