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A Post-it note (or sticky note) is a small piece of paper with a re-adherable strip of glue on its back, made for temporarily attaching notes to documents and other surfaces. A low- tack pressure-sensitive adhesive allows the notes to be easily attached, removed and even re-posted elsewhere without leaving residue.
Alan Amron (born November 20, 1948) is an American inventor who holds 40 [1] [2] United States patents. Amron invented the Photo Wallet and Battery operated water guns.. He has claimed to be the inventor of the Post-it note Sticky notes, for which he sued 3M in 1997 and agreed to a confidential settlement.
The next day, Fry requested a sample of the adhesive. He began experimenting, coating only one edge of the paper so that the portion extending from a book would not be sticky. Fry experimented with writing notes to his boss, which broadened his original concept into the innovative Post-it Note product.
[36] [37] A year later 3M instead issued free samples of it as a sticky note directly to consumers in Boise, Idaho, with 95% of those who tried them indicating they would buy the product. [36] The product was sold as "Post-Its" in 1979 when the rollout introduction began, [38] and was sold across the United States [38] from April 6, 1980. [39]
Fry developed bookmarks using Silver's adhesive, preventing them from leaving residue, and sought to interest others within the 3M company in them. [6] [7] The adhesive notes were initially marketed under the name Post 'n Peel in four cities from 1977 and as Post-it Notes from 1980 throughout the United States. [8]
Adhesives may be broadly divided in two classes: structural and pressure-sensitive. To form a permanent bond, structural adhesives harden via processes such as evaporation of solvent (for example, white glue), reaction with UV radiation (as in dental adhesives), chemical reaction (such as two part epoxy), or cooling (as in hot melt).