The term soap refers to a specific type of detergent in which the water-solubilized group is carboxylate and the positive ion is typically sodium or potassium. The largest market for soap is for toilet soap, which is used for personal bathing and cleaning applications. Synthetic detergents replaced he usage of soap powders for home laundering during the last years of 1940s, because the carboxylate ions of the soap react with the calcium and magnesium ions in the natural hard water to produce insoluble materials, known as lime soap.
A wide range of soap making machines is available in industry that performs different functions and operations. Generally the soap making machines can be of two types - Laundry soap making machines (used in laundry) and Toilet soap making machinery (used for bathing).
The most important soap manufacturing machines that are used now days are -