The Spray Can

A spray can is a metal container that shoots out a fine mist when you press the button on top. It is used for things like spray paint, bug spray, and even whipped cream. Spray cans make it easy to spread liquids evenly.

How the Spray Can Was Invented

The first spray cans were developed in the 1920s and 1930s. During World War II, American soldiers needed a way to spray bug killer to fight insects that carried diseases. Two inventors named Lyle Goodhue and William Sullivan created the first small, practical aerosol can.

After the war, spray cans were used for many products. Hair spray, deodorant, paint, and cooking sprays all came in aerosol cans. They became one of the most common containers in homes.

How Spray Cans Work

Inside a spray can, there is a liquid product mixed with a gas under pressure. When you press the button, the gas pushes the liquid out through a tiny hole. The liquid comes out as a fine mist or foam.

Early spray cans used gases that were harmful to the Earth's ozone layer. Today, spray cans use safer gases that do not damage the atmosphere. You should always use spray cans in well-ventilated areas.

Fun Facts

• Americans buy about 3 billion spray cans every year.
• The aerosol can was perfected to help soldiers fight mosquitoes during World War II.
• Spray cans can shoot their contents several feet through the air.

Did You Know?

Silly String, the fun party spray, is one of the most popular novelty products sold in aerosol cans.