The foam washing uses foams as gas/liquid dispersion media, in which clothes are separated from wash liquid, and it aims at saving of water, prevention of water pollution and decline of damage and deterioration of clothes. In this paper, we used four kinds of foam washing machines differed in the volume of washing sink ( 1.9, 12.3, 24.7 and 70.6
l) and in the defoaming systems. A study was made on the effect of air flow rate of foam washing by air injection method on the detergency of the natural dirt on the collar and the artificial cluster dirt. Following results were obtained.
1) When the air flow rate was increased in the foam washing, generally the rate of foam creation increased in proportion with the air flow rate, and blow ratio fixed into a range from 700 to 1000, but at the air flow rate below that point, the rate of foam creation lowered to deviate from the proportional relation and blow ratio increased remarkably.
2) In the foam washing, it was recognized that the detergency generally increased as the air flow rate increased and the maximum detergency was obtained in the range of air flow rate over foaming property transfer point.
3) Foaming property transfer point (A) wes the suitable air flow rate for detergency, and it followed the equation A =0.87V+18.7 related with the volume of washing sink (V) .
View full abstract