A Household Item
As with many other inventions of the era, World War II was a major factor in the development of the spray can.
Hundreds of thousands of U.S. soldiers were being shipped to the South Pacific, where illnesses like malaria and typhus were being spread through contact with mosquitos.
Two researchers from the Department of Agriculture, Lyle Goodhue and William Sullivan, developed a small portable can in 1943 that was pressurized by a liquid gas and capable of spraying insecticide.
Similar aerosol systems were quickly adapted to other product categories for the general public to use, including spray paint.
Illinois paint company Seymour of Sycamore was the first to use aerosol technology solely for paint products in 1949. Owner Ed Seymour wanted to demonstrate an aluminum paint, developed for painting radiators, that would employ a “mist” feature similar to the device American soldiers had used in World War II, and was awarded a US patent in 1951.
Nowadays, the spray can is part of everyday life for millions of people worldwide, with applications in all areas of the home. In the past, freon and chlorine fluorocarbons were used as a propellant gas, but this was banned in 1981. Now a mixture of propane and butane is used as propellant gas, while the race to produce the first sustainable spray can is well underway.