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Arthur Fry with a Post-it note on his forehead. In 1968, Spencer Silver, a scientist at 3M in the United States, attempted to develop a super-strong adhesive.Instead, he accidentally created a "low-tack", reusable, pressure-sensitive adhesive for the aerospace industry.
In the 1970s self-adhesive labels and stickers became mainstream products and were popularized in the form of car decals, bumper stickers, and collectable items. [6] A sheet containing adhesive labels. There are three main classifications for label adhesives including: permanent, removable, and repositionable. [7]
[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] Post-it as we know it was patented by Fry in 1993 as a "repositionable pressure-sensitive adhesive sheet material". [3]
The adhesive is applied to either one or both of the materials being bonded. The pieces are aligned and pressure is added to aid in adhesion and rid the bond of air bubbles. Common ways of applying an adhesive include brushes, rollers, using films or pellets, spray guns and applicator guns (e.g., caulk gun). All of these can be used manually or ...
Pressure-sensitive adhesive (PSA, self-adhesive, self-stick adhesive) is a type of nonreactive adhesive which forms a bond when pressure is applied to bond the adhesive with a surface. No solvent, water, or heat is needed to activate the adhesive.
Form into 1 1/2" balls (about 34 total). Arrange on a baking sheet and refrigerate until firm, about 1 hour. Assembly. To make hooks, place 34 cereal pieces flat on a baking sheet. Hold one of the ...
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