Textbook e.g. for school use has pages in sections which can be removed individually from cover

摘要

The text book has its pages assembled in sections (1) inside a cover (3). Each section can be detached from the cover and replaced at will, using a system such as a multi-use adhesive on the inner surface of the cover spine and a smooth surface on the page section which adheres to it, or strips of a self-adhesive fabric. The book can also include a separate inner cover (5) which is used to protect a detached section of pages.