Cosmetic Three Roll MillSome cosmetic products, such as lipstick, nail polish, and mascara, relies on the use of a three roll mill for highly homogeneous and finely dispersed structure. Many types of mills providing high shear force are generally adopted machine in cosmetic industry. Among these, the three roll mill is the preferred mill since its.cosmetic three roller mill,cosmetic three roller mill,Three Roll Mill - Ross MixersHow the Three Roll Mill Works. The material to be milled is placed between the feed and center rolls. Each adjacent roll rotates at progressively higher speeds. For example; the feed roll may rotate at 30 rpm, the center roll at 90 rpm and the apron roll at 270 rpm. Material is transferred from the center roll to the apron roll by.