Manufacture of detergent bars

摘要

A method and apparatus for preparing multicolored soap bars by injecting a colored liquid phase into a soap mass wherein (i) The soap mass is passed through an apertured plate to form rods, (ii) The liquid phase is introduced between the rods in at least one position, (iii) The rods are compressed inwardly to form a continuous mass having striations of the liquid phase therein, and (iv) The mass is extruded into a bar.