Refining Process / milling process
Roll Mill is used as soap milling machine in the refining proccess, specifically in the production of toilet soap. Designed to produce a totally homogeneous and uniform product, eliminating hard particles of low solubility.
Refining depends on two variables: gap between rolls and difference in roll rotation. The gap between last two rolls determines the degree of refining and the temperature of the product.
The soap noodles passing between rolls become a thin soap film.
Finally, thanks to the scraper (blade with multiple cuts and angles), the soap film is separated from the last roll.