洗浴中における布地の繰り返しせん断変形の効果 (第1報)

抄録

The purpose of this paper is to determine the effect of repeated shearing stress on fabrics in washing bath, and a model device was designed for this purpose. Artificially soiled cotton fabrics soiled with carbon black and palmitic acid were washed in synthetic detergent solution by the test apparatus.
D_m (repeated shearing effect) and p (ration of D_m to D_M) were obtained as follows :
D_m= D_M-D_n, p=100D_m/D_M = 100 (D_M-D_n) /D_M
where D_M and D_n are detergencies under repeated shearing stress and nonrepeated-shearing respectively.
The results obtained were as follows :
1. Interpretable relation was observed between D_M/shearing speed curve and D_m/shearing speed curve.
2. p values were between the range of 3070% according to the shearing speed.D_m3. It was found that repeated shearing of fabrics is an operation to increase the effective surface of the fabrics in washing.