Sigma Mixer (Kneader)
A viral for mixing and kneading related applications for highly viscous materials like polymers, adhesives, putty detergent caks, pigment emulsions etc. It is having a twin tub with side overs, which are jacketed for heating and cooling purpose.

The mixing action is a combination of smearing, stretching, folding, dividing and recombing as the material is processed between the sigma blades and the container walls