You must think rice paper is made from rice, but it isn't. Rice paper doesn't contain any paper components.
Typically, rice paper is made from starches like sweet potato, corn, or wheat flour. In food factories, workers mix these starches into a thin slurry, filter out the impurities, and then mix the starch slurry with hot water to form a paste. The paste is then evenly sprayed onto a drying machine, and after baking, thin, transparent sheets of rice paper are produced.
Starch is edible and turns into a paste when it meets water. Now, in its thin sheet form, it naturally dissolves in your saliva as soon as it enters your mouth. Interestingly, some food for astronauts is also wrapped in a layer of rice paper. With this film's protection, astronauts can eat in a zero-gravity environment without crumbs floating everywhere!
As you can see, rice paper has many important uses!