Carbon footprint of cotton, polyester, and blended T-shirts: A life cycle assessment considering wet processing differences
綿、ポリエステル、混紡Tシャツのカーボンフットプリント：湿式加工の違いを考慮したライフサイクルアセスメント (AI 翻訳)
Toshiro Semba, Atsuo Yoshida, Masakazu Saika, Masaaki Okayama, Tomonori Goto, Ryuzo Furukawa, Norihiro Itsubo
🤖 gxceed AI 要約
日本語
本研究は、Tシャツを対象に、綿、ポリエステル、混紡素材のカーボンフットプリント（CFP）をライフサイクルアセスメントで評価した。日本の染色加工業者へのインタビューによる一次データを用い、湿式加工がCFPに大きく影響することを示した。混紡TシャツのCFPが最も高く、湿式加工が約49%を占め、工程簡素化の有効性を示唆した。
English
This study conducts a life cycle assessment of cotton, polyester, and blended T-shirts, using primary data from Japanese wet processing manufacturers. It finds that blended T-shirts have the highest carbon footprint, with wet processing accounting for about 49%, suggesting that simplifying wet processing steps could reduce emissions. Polyester T-shirts have a higher footprint than cotton due to fiber production and incineration.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本企業の一次データを用いた繊維産業のCFP算定は、サプライチェーン排出量開示が進む中で、国内製造業のScope 3対応に示唆を与える。また、SSBJ開示や有報での情報開示に活用可能な実践的知見を提供する。
In the global GX context
This paper provides empirical LCA evidence on textile carbon footprints, relevant to global fashion industry decarbonization and supply chain disclosure under frameworks like CDP and CSRD. It highlights the role of wet processing, offering actionable insights for emission reduction in textile manufacturing.
👥 読者別の含意
🔬研究者:Provides primary data on wet processing emissions and comparative CFP of fiber types, useful for LCA methodology refinement.
🏢実務担当者:Identifies wet processing as a key hotspot, suggesting process simplification for carbon reduction in textile supply chains.
🏛政策担当者:Informs policies promoting sustainable textile manufacturing and carbon labeling.
📄 Abstract（原文）
Textiles exert significant environmental impacts throughout their life cycle. Among the various stages of garment manufacturing, wet processing—mainly comprising scouring, dyeing, and finishing processes—requires high energy and involves high water and chemical consumption. Cotton (CO) and polyester (PES) fibers are widely used as primary materials for garments, and CO/PES fiber blends are often employed to combine their properties. However, because CO and PES differ in chemical composition, they require separate wet processing. There is limited previous research examining wet processing and comparing the carbon footprint (CFP) of CO, PES, and CO/PES garments. In this study, a life cycle assessment was conducted for T-shirts as representative garments to evaluate the effect of the fiber material on the CFP. Primary data for wet processing were obtained by interviewing Japanese manufacturers involved in dyeing and finishing processes. The results of the CFP calculation up to T-shirt manufacturing indicate that dyed CO/PES T-shirts exhibit the highest CFP among the analyzed products, with wet processing accounting for approximately 49%. This is attributable to the separate wet processing treatments for CO and PES fibers. Simplifying wet processing steps may therefore be an effective strategy for reducing the CFP associated with wet processing. Furthermore, when comparing single-fiber T-shirts, PES T-shirts exhibit higher CFP than CO T-shirts. This difference is mainly attributable to PES staple fiber production and CO 2e emissions from the incineration of manufacturing losses and end-of-life T-shirts. These findings provide valuable insights to support sustainable decision-making by consumers, companies, and policymakers in the fashion industry.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.clrc.2026.100481first seen 2026-08-11 04:39:29
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