Cotton/polyamide fabric is commonly colored separately using two kinds of dyes in the pad dyeing process, which leads to many shortcomings such as complex process flow, extensive usage of auxiliaries, high pollute on and so on. Based on the trait of reactive dye, a short-process clean pad dyeing for cotton/polyamide fabric just with reactive dye was developed in this paper. The system of self-adaptive adjustment of dye solution pH, which provided suitable color fixation conditions for cotton and polyamide, was developed to realize the short-process clean pad dyeing technology. The direct-steaming process after sample passing through padding mangle brought fabric with better color brightness compared with traditional drying-steaming procedure. The optimal concentration of dye and sodium trichloroacetic (TCA) were 25 g/L and 20 g/L, respectively. Initial pH value of dye liquor was 5, and the steaming time was recommended to be 25 min. The above conditions were determined to ensure less resource consumption and satisfactory color brightness. By calculation, the water consumption and production cost of dyeing 10 km length fabric (3 m width) could be reduced by about 67% and 28.9% respectively compared with the traditional process. This innovative dyeing technology solves the problems of traditional dyeing, such as high pollution and complicated process, and it provides a new way for cotton/polyamide fabric dyeing under the condition of friendly environment, less waste water and higher efficiency.

棉/锦纶织物在轧染过程中通常采用两种染料分别上色，导致工艺流程复杂、助剂用量大、污染大等诸多缺点。本文根据活性染料的特点，开发了一种仅用活性染料对棉/锦纶织物进行短流程清洁轧染的方法。为实现短流程洁净轧染技术，开发了染料溶液pH自适应调节系统，为棉、锦纶提供了合适的固色条件。样品通过轧染机后的直接汽蒸工艺与传统的干蒸工艺相比，使织物具有更好的色彩亮度。染料和三氯乙酸钠 (TCA) 的最佳浓度分别为 25 g/L 和 20 g/L。染液初始pH值为5，建议汽蒸时间为25分钟。确定上述条件是为了确保更少的资源消耗和令人满意的色彩亮度。经计算，染色10公里长（3米宽）织物的用水量和生产成本比传统工艺分别降低约67%和28.9%。这种创新的染色技术解决了传统染色工艺污染大、工艺复杂等问题，为棉/锦纶织物在环境友好、废水少、效率高等条件下染色提供了新途径。经计算，染色10公里长（3米宽）织物的用水量和生产成本比传统工艺分别降低约67%和28.9%。这种创新的染色技术解决了传统染色工艺污染大、工艺复杂等问题，为棉/锦纶织物在环境友好、废水少、效率高等条件下染色提供了新途径。经计算，染色10公里长（3米宽）织物的用水量和生产成本比传统工艺分别降低约67%和28.9%。这种创新的染色技术解决了传统染色工艺污染大、工艺复杂等问题，为棉/锦纶织物在环境友好、废水少、效率高等条件下染色提供了新途径。