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许多纤维,特别是羊毛纤维在水洗过程中会发生吸水膨胀,干燥后又收缩的变化,因而织物在水洗时会出现折皱和变形,所以羊毛织物不宜水洗。另外水洗会使羊毛、丝绸织物的手感、颜色、光泽等变差,并使醋酸纤维等外衣的洗涤折皱不易去除和化纤织物的组织结构发生变形,此外一些染色衣物在水洗时会发生染料溶解变色,而在有机溶剂洗涤过程中不会发生上述变化,因此在这些情况下宜用干洗。
Many fibers, especially wool fibers, swell and swell during the washing process, shrinking and drying after drying. As a result, the fabric is wrinkled and deformed when washed, so the wool fabric should not be washed with water. In addition, washing will worsen the feel, color, gloss and the like of wool and silk fabrics, and make it difficult to remove the washing wrinkles such as acetate fibers and the structure of the chemical fiber fabrics. In addition, some dyed clothes will dissolve and discolor when washing , And the above changes will not occur during the organic solvent washing process, so dry cleaning is preferable in these cases.