Abstract: In order to solve the problems of large workload in evaluating the carbon footprint of textile and apparel products at the industrial production stageand the difficulty in achieving the refinement of accounting by traditional methods,a carbon footprint accounting method based on the modularity theory was adopted to calculate and evaluate the industrial carbon footprints of three jeans products (men's, women's and children's jeans), with process-level carbon footprint units (modules) being reused and assembled to enable rapid and accurate calculation of the product's carbon footprint. The results showed that the carbon footprints of men's, women's and children's jeans from spinning to garment manufacturing were 7.30 kg CO₂e/piece, 7.24 kg CO₂e/piece and 4.16 kg CO₂e/piece, respectively. The sewing process (in the garment manufacturing workshop) of men's and women's jeans, and the dyeing and sizing process (in the weaving workshop) of children's jeans were identified as having the largest carbon footprints, with decorative labels and steam consumption contributing the most to the carbon footprints of the above two processes, which can be reduced by optimizing the design of decorative labels, choosing greener raw materials and adopting new dyeing techniques. In addition, electricity was the most significant source of carbon emissions in the production of products. It is recommended to use clean electricity instead of traditional thermal power.

Key words: jeans, carbon footprint, calculation, modularity, process level

摘要： 为解决纺织服装产品工业生产阶段碳足迹评价工作量大、传统核算方法较难实现核算精细化等问题,采用基于模块化理论的碳足迹核算方法对三款牛仔裤产品(男式、女式和儿童牛仔裤)的工业碳足迹进行核算与评价,通过工序层级碳足迹单元(模块)的选择调用与积木式拼装实现产品碳足迹的快速和精准核算。结果表明:男式、女式和儿童牛仔裤从纺纱到制衣过程的碳足迹分别为7.30 kg CO₂e/件、7.24 kg CO₂e/件和4.16 kg CO₂e/件;男式和女式牛仔裤缝制工序(制衣工段中)以及儿童牛仔裤染色与上浆工序(织造工段中)的碳足迹最大,装饰唛和蒸汽的耗用是导致上述两个工序碳足迹较大的主要原因,可通过优化装饰唛的设计、选择更加环保的原材料、采用新型染色技术等手段减少两个工序的碳排放量;电力是产品生产过程中最主要的碳排放源,建议采用清洁电力来替代传统火电。

关键词: 牛仔裤, 碳足迹, 核算, 模块化, 工序层级