Mix together the ingredients of a in a hot water (50-55'C) jacketed blender until homogeneous and plastic. Stamp into tablet form using a mold and pressure of approximately 3500 psi. coat with water-soluble film (b) by either dipping or spraying. Dry film immediately with a blast of hot air. Tablets weighing approximately 85 grams are equivalent to 1 cup of the usual washing powder.