White granulated sugar is processed by marshmallow extractor to make cotton candy. Cotton candy is a filamentous object because the molecular structure of white granulated sugar is disrupted by marshmallow extractor, and the molecular arrangement is no longer regular, but rather disorderly. This structural change can be measured by melting point.

The molecule has a specific melting point, and the temperature will not change when it is heated and melted; Cotton candy has no specific melting point, and the temperature will gradually rise when melting. After the high-speed rotation of the silk outlet, sucrose will become a long filamentous material, which is wound together like cotton.

Marshmallow extractor is a machine like a big bowl. The central part of marshmallow extractor is a high-temperature heating chamber. The heat breaks the crystal structure and turns sugar into syrup. The heating chamber of marshmallow extractor has some holes smaller than the size of white granulated sugar particles. When the sugar rotates at high speed in the heating chamber, the centrifugal force ejects the syrup from the small hole to the peripheral wall of marshmallow extractor. Because the solidification speed of liquid matter is related to its volume. The smaller the volume, the faster it solidifies. Therefore, the diameter of the small hole in the heating chamber is often designed to be very small, only 50 microns. The syrup sprayed from the small hole will immediately condense into solid sugar filaments and will not stick together.