3M developed the Post-it Note after a weak adhesive was invented at the company.
In 1968, 3M scientist Spencer Silver created an adhesive that stuck lightly and could be removed without leaving much residue. It did not immediately find a commercial use. Several years later, 3M colleague Art Fry looked for a way to keep bookmarks inside his church hymnal without damaging the pages. Silver’s adhesive supplied the solution.
3M developed the product through testing and internal promotion. Early trial distribution took place in parts of the United States, and the notes were later introduced nationally under the Post-it brand. Their repositionable adhesive became useful in offices, schools, laboratories, and homes.
The product is often described as a failed invention that became successful by accident. A more accurate account is that Silver’s discovery and Fry’s application were separate stages, followed by extensive product development and market testing by 3M.