关键词: 纺织服装产品, 丝巾产品, 模块化碳足迹核算方法, 碳足迹核算与评价

Abstract: Most of the current studies focus on the carbon footprint of raw materials or semi-finished products, and do not specifically study consumer-oriented products. Therefore, enterprises lack a basis for comparison in terms of product design and supply chain integration. 
To help silk enterprises quickly and clearly understand the potential for emission reduction in production, and to promote the green and low-carbon development of the whole industrial chain, this paper,based on the method of modular carbon footprint accounting of workshop sections, calculates and assesses the industrial carbon footprint of two types of mulberry silk scarves (twill fabric 88×88 cm and crepe satin fabric 51×51 cm) under two silk reeling processes (from silk reeling enterprises 1 and 2), and analyzes the impact of product style and processing technology on the product carbon footprint results. 
The results show that the carbon footprint of silk twill scarf products under the first silk reeling process is 12.02 kgCO2e/piece, while that under the second silk reeling process is 11.58 kgCO2e/piece. The carbon footprint of silk crepe satin scarf product under the first silk reeling process is 5.43 kgCO2e/piece, while that under the second silk reeling process is 5.28 kgCO2e/piece. The carbon footprint of the product using the second silk reeling process is 96.31%–97.27% of that using the first silk reeling process, and the difference is due to raw material consumption and suppliers' energy structure. The carbon footprint contribution of the printing section of the two silk scarf products is the largest, accounting for approximately 43.76%–54.87% of the products' carbon footprint. The carbon footprint contribution of the packaging section of the crepe satin silk scarf product exceeds that of the silk reeling section, second only to the printing section. The reason is that the crepe satin silk scarf is smaller, and it consumes more packaging materials than the twill silk scarf under the same weight. Steam is the largest source of carbon footprint for the two scarf products, accounting for approximately 44% to 55% of the products' carbon footprint. 
Suggestions for reducing the carbon footprint of the silk product industrial process are as follows. First, silk reeling enterprises can tap into the potential for carbon reduction in terms of raw material consumption and energy structure. For example, they can improve product design and production process and reduce product carbon footprint by reducing raw material usage or increasing yield on the premise of ensuring product performance. Second, silk product processing enterprises can take measures such as simplifying product packaging, and building a green supply chain to recycle packaging materials, so as to effectively reduce the carbon footprint of their products.  
The calculation and assessment method based on modularization of workshop sections can be used to quickly calculate the carbon footprint of similar products, analyze the impact of style and process differences on the carbon footprint of silk products, and provide a basis for carbon reduction in product design stage and supply chain.

Key words: textile and clothing products, silk scarf product, modular carbon footprint accounting method, carbon footprint calculation and assessment