Due to the narrowing space between the rolls, most of the paste initially remains in the feed region.
The part that makes it through the first in-running nip experiences very high shear force due to the different rotation speeds of the two rolls.
[3][4] Three roll mills are widely used to mix printing inks, electronic thick film inks, high performance ceramics, cosmetics, plastisols, carbon/graphite, paints, pharmaceuticals, chemicals, glass coatings, dental composites, pigment, coatings, adhesives, sealants, and foods.
With the recent development in technology, they are also utilized in the production of cable cover, electronics, soap, and artificial plastics.
A notable disadvantage is that the large open area of paste on the rollers causes loss of volatiles.