washable textbook / product design

Washable textbook is designed for students and for public library. Every pages of the book is covered by a thin film of special material, possible as TPU. Students can take any notes on it. As they no longer need it, they can just wash it by using ethanol to fade the notes. Also to clean the textbook in order to give it to those who want. So, we can use the books which are only needed in a certain time with a free style to read and write without worry about track and destroy the user may leave, relying on the films it has. We can pass it to others as a new one in inexpensive way and make the time of recycling much longer than before.