| 摘要 |
PURPOSE: To improve pimple preventing effect by composing a face mask of cellulose fibers including colloidal free sulfur at a specific ratio. CONSTITUTION: A face mask is composed of cellulose fibers containing colloidal free sulfur by 0.2-20wt.%. As a method for letting cellulose fibers contain colloidal free sulfur, sulfur product is contained in spinning liquid to be spun, or in a post process, yarn or cloth of cellulose fibers is immersed in sodium sulfide solution or sodium thiosufate solution in which sulfur is dissolved to be decomposed in the acid solution. For distribution of colloidal free sulfur, desirably, it is concentrated at a center part of a fiber cross sectinal surface, and it is contained in such a way that more than 70% the total sulfur quantity is included in parts of 1/2 from the center of the cross sectional surface in the separated condition, by which deterioration of the fibers is less likely to occur. |
