The manufacture of soap involves 4 stages:
Figure
The design of the production line and its production capacity must be based on clearly defined commercial objectives which can be identified only from a detailed analysis of the market potential, actual demand, and consumer attitudes. A household soap, for instance, does not require the same degree of finishing as a toilet soap, or a public toilet soap as much finishing as a high-grade soap. Similarly, certain manufacturing stages can be simplified or even left out. Since such factors place a needless strain on the cost of manufacturing soap, it is vital to study them in order to make an appropriate choice in terms of technology and production capacity.
The use of higher-quality oils and fats often means that the processing stage can be avoided.
Manufacturing processes are usually classified as follows. A brief description is given below of each stage and manufacturing process.
Figure