Soiling of Bath-Liquid Pigment on White Cotton Cloths

摘要

From the standpoint of saving water in home laundry, the effect of soiling on white cotton cloths was investigated by using washing water to which bath liquid containing pigments had been added. The used bath liquid contained ca. 93/100 inorganic salt (NaHCO_3, Na_2SO_4, etc.) and a few kinds of pigments (acid dye), and its instructed concentration was 30g/200 l (0.015/100). The soiling experiment was carried out using a washing machine and an incubator.