Hot Melt Extruder (granulation techniquue)

Why we r using Hot Melt Extruder in formulation to convert the forms , & what types of formulations need this technique & what are the advantages?

extruder could be used in continuous processing. it blends and/or granulate (using addition of solvent or using melt binder). the output looks like noodles, which then to be cut and, if needed to be pellets, spheronized. hot melt extruder could be applied for solid dispersion technique.