Toy balloon is one of the common latex impregnated products in life. Its manufacturing principle is mainly to immerse the model with coagulant into the vulcanized latex (or mixed latex) and stay for a certain time according to the gelling and molding properties of the latex, so that the latex model can be deposited into a rubber film of a certain thickness. Then it is made by drying, film removal, vulcanization and other processes. In order to improve the quality of the balloon, it is usually leached to remove the coagulant remaining in the rubber film.