Abstract: There is provided a method of manufacturing a paper-forming product formed of an environmentally friendly paper coating agent, which is excellent in water resistance, oil resistance, thermally adhesive property, and alkaline water-dissociative property, the method including mixing alkali metal hydroxide, amines, ammonia water, or the like with each of an ethylene-acrylic acid copolymer or an ethylene-(meth)acrylic acid copolymer or a mixture of these polymers, and using a water-dispersible coating solution prepared by adding FDA-approved matting agent, slip agent, and anti-foaming agent into a water-dispersible resin solution prepared by neutralizing the mixed product in an aqueous medium.