The Humble History of Sticky Notes
Sticky Notes, often referred to by their brand name of Post-It notes, are a staple in just about every office across the country. Their invention, however, was a great and happy accident. In 1968, 3M was working on developing a super strong adhesive to be used in the aerospace industry to build planes. Instead of the projected super adhesive, they created a weaker adhesive they affectionately named Acrylate Copolymer Microspheres.
In the early days of ACM's existence, it was thought to be too weak to be useful. It had the notable qualities, though, of being peeled easily from any surface it stuck to without leaving sticky residue and also being reusable for a number of sticks. After some head scratching and experimentation, 3M decided to try using this adhesive as the backing of small pieces of paper that could be stuck to different things like books and bulletin boards. And people have been doing just that ever since.