The flaker is an equipment used to convert the solutions and suspensions into the solids. The main purpose of these dryer is to spread the liquid to a large surface area so that drying can occur rapidly. 

The drum dryer consists of a hollow drum with a smoothly polished external surface cooled internally by chilled water. 

The liquid to be dried is placed in a trough known as feed pan. The liquid is picked up by the roller as it rotates covering the surface in a thin film is removed mechanically by a scrapper known as doctor knife. After processing on flakers, the material forms films or easily handled flakes and is further processed or packed into containers for transport. A great advantage of flakers is that they offer a continuous process