A cotton candy machine operates by spinning sugar at high speeds to create the fluffy confection known as cotton candy. The process begins with the machine's central component, a spinning head or bowl, which contains a small heater. Granulated sugar, often mixed with food coloring and flavoring, is poured into this head.
As the machine is turned on, the heater melts the sugar, transforming it into a liquid state. The spinning head rotates at high speeds, typically between 3,400 to 3,600 revolutions per minute. This rapid spinning forces the liquefied sugar through tiny holes or slits located around the perimeter of the spinning head due to centrifugal force.
As the liquid sugar is expelled through these holes, it is exposed to the cooler air outside the spinning head. This sudden change in temperature causes the sugar to solidify almost instantly, forming fine, thread-like strands. These strands are collected in a large, circular bowl that surrounds the spinning head.
The operator uses a cone or stick to gather the delicate sugar threads, which naturally adhere to each other, forming the fluffy, cloud-like structure of cotton candy. The process is quick, and the machine can produce a serving of cotton candy in a matter of seconds.
The simplicity of the machine's design, relying on basic principles of heat, centrifugal force, and rapid cooling, allows for efficient production of cotton candy, making it a popular treat at fairs, carnivals, and amusement parks.