摘要 |
PURPOSE:To improve dyeability and luster of silk product approximately without degrading tensile strength and elongation by impregnating a silk product with an aqueous solution of caustic soda having a specific concentration under a specific temperature conduction, washing with water and neutralizing. CONSTITUTION:Silk fibers, silk yarn, woven or knit fabric of silk or a mixed silk product with a vegetable fiber such as cotton or flax, an animal hair fiber such as wool or chemical fiber such as polyester, nylon or polynosic is impregnated with an aqueous solution of caustic soda which contains a penetrant for cotton mercerization and has <=48 deg.Baume, preferably 24-38 deg. Baume at <30 deg.C, preferably 10-20%oC. Then the silk product is washed with water and neutralized. |