Post-it Notes Came From a Glue That Failed

Spencer Silver was a young chemist at 3M. In 1968 he was trying to make a very strong adhesive for the aerospace industry. What he made was the opposite: a glue with tiny clear spheres that “kind of sparkled in the light,” as he later put it. It held paper in place, peeled off cleanly and could be stuck down again.

Silver patented it in 1972. The problem was that nobody at 3M could think what to do with it. He called it a solution waiting for a problem and spent about five years promoting it inside the company, in conversation and in seminars, without much success.

1974: The hymnal

One person who heard him was Art Fry, a 3M chemical engineer who sang in his church choir. His paper bookmarks kept falling out of his hymnal. In 1974 Fry had the idea of putting Silver’s adhesive on the bookmarks so they would stay put and come off without tearing the pages.

He developed the idea using a 3M policy that let employees spend some of their work time on projects of their own choosing. The first notes were yellow by accident: the lab next door had some yellow scrap paper, and the team used it.

Fry supplied notes to colleagues across the company, and, 3M says, employees loved them.

1977: The launch that failed

In 1977 3M tested the product in stores in four cities under the name Press ’n Peel. The results were disappointing. Some people at 3M believed the answer was to let customers try the product.

So in 1978 3M tried something else in Boise, Idaho. Instead of waiting for shoppers to buy, it put the product directly into people’s hands with free samples to offices. The campaign became known as the Boise Blitz, and 3M calls it a runaway success: most people who tried the notes said they would buy them. The product was renamed Post-it Notes.

1980: Everywhere

Post-it Notes went on sale across the United States in 1980 and in Canada and Europe the following year. By 1984, according to Encyclopedia.com, the pads had become 3M’s most successful new product. The team that developed them won 3M’s internal awards for a profitable product that generated significant new sales.

3M’s patent expired in 1997, and competitors now sell “repositionable notes” of their own. The Post-it name and the original yellow color remain 3M trademarks. The company does not publish Post-it sales separately, but it still sells tens of billions of them a year, The Register reported. 3M as a whole had sales of $24.9 billion in 2025.

Silver retired in 1996 with 37 patents and died in 2021 at 80. “It was always a self-advertising product,” he told CNN in 2013.

What the record shows

• The failure was in the brief, not the glue. An adhesive too weak for aerospace work was exactly right for paper.
• An invention needs a problem. Silver had the adhesive for years; Fry supplied the use.
• Time for side projects paid off. Fry worked on the idea under a 3M policy allowing employees their own projects.
• Samples sold what shelves could not. The store test failed; free notes in people’s hands worked.

Other products in this archive were also made for something else first. Play-Doh was sold to clean wallpaper, and Bubble Wrap was meant to be wallpaper. Corning’s Gorilla Glass sat on a shelf for decades before smartphones needed it.