纯棉靛蓝牛仔布激光生态洗水工艺的探讨

Study on Ecological Laser Washing Process ofCotton Indigo Denim

选用纯棉靛蓝牛仔布作为实验对象，利用激光技术对织物进行生态洗水，对洗水前后织物的表面组成进行了红外光谱分析，拉伸强度、透气率、耐磨性、织物厚度以及K/S值进行了测试。结果表明：当激光功率为75%～85%，加工速度为1万～1.2万mm/min时，牛仔布洗水效果良好，洗水后织物表面无新物质生成，拉伸强度、透气率、K/S值不同程度降低，耐磨性、织物厚度变化并不明显。与传统洗水方式相比，激光洗水更加环保，有效降低了加工成本，符合绿色生产的主题。

The cotton indigo denim was treated by using ecological laser washing technology. The surface composition before and after washing was analyzed by using infrared spectrometer, and the tensile strength, air permeability, abrasive resistance, thickness and K/S values （dyeing deepness） of denim fabric were tested. The results showed that the washing effect was very distinctive when laser power ranging from 75%to 85%and working speed ranging from 10 000 to 12 000 mm/min. After washing, no new substance was formed on the surface of denim, the tensile strength, air permeability and K/S values of the fabric declined by different degrees, the abrasive resistance and thickness did not change significantly. Compared with traditional washing methods, laser washing is more environmental-friendly and it effectively reduces the processing costs and is in line with the concept of green production.