**6.5 Rolling**

Water and a combination of water and alcohol are the most common solvents employed in this procedure. The active substance and other components are dissolved in a small amount of aqueous solvent using a high shear processor. Hydrocolloids that are water-soluble are dissolved in water to create a homogeneous viscous solution. The *Thin Films: A Promising Approach for Drug Delivery System DOI: http://dx.doi.org/10.5772/intechopen.103793*

drug-containing solution or suspension is then rolled onto a carrier. After that, the film is cut into the proper shapes and sizes [68].
