Polyester Curtains (pair)

Material Composition Assumptions

This assessment assumes a standard pair of polyester curtains consists entirely of polyethylene terephthalate fiber. The typical product weighs approximately 1,500 grams total, with both panels containing 100% PET-based synthetic textile material. No additional components such as metal grommets, plastic rings, or natural fiber blends are included in the baseline composition analysis.

Manufacturing Geography

Primary production occurs in China, where the majority of global polyester textile manufacturing takes place. The Chinese electricity grid operates at 555 gCO2/kWh, significantly impacting the carbon intensity of energy-intensive processes like fiber spinning, fabric weaving, and chemical dyeing. This region dominates polyester curtain production due to established supply chains for petrochemical feedstocks, large-scale textile manufacturing infrastructure, and proximity to major shipping ports for global distribution.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated CCI Score	Adjustment vs Default
China	555 gCO2/kWh	48	Baseline
India	708 gCO2/kWh	52	+8%
Turkey	436 gCO2/kWh	44	-8%
Germany	366 gCO2/kWh	41	-15%
Vietnam	473 gCO2/kWh	45	-6%

Provenance Override Guidance

1. Supplier-specific electricity consumption data for spinning, weaving, and dyeing operations with documentation of renewable energy procurement or on-site generation capacity.

2. Verified recycled polyester content percentage with third-party certification showing post-consumer or post-industrial waste material incorporation rates.

3. Transportation mode and distance documentation including shipping method, port-to-port routing, and final mile distribution logistics with fuel consumption records.

4. Chemical processing efficiency metrics including terephthalic acid synthesis yield rates, catalyst recovery percentages, and waste stream treatment documentation.

5. End-of-life program participation evidence showing take-back initiatives, mechanical recycling partnerships, or chemical depolymerization facility agreements.

Methodology Notes

• The CCI score represents cradle-to-grave lifecycle emissions including raw material extraction, manufacturing, transportation, use phase impacts, and end-of-life disposal considerations.

• Scope 3 emissions dominate the footprint due to upstream petrochemical production and terephthalic acid synthesis processes required for polyester fiber creation.

• The functional unit covers one pair of standard residential curtains weighing approximately 1.5 kilograms total.

• Packaging materials, retail display infrastructure, and consumer installation hardware are excluded from the assessment boundary.

• Use phase washing frequency assumptions may vary significantly based on household practices and regional water heating energy sources.

• Microfiber release during washing cycles represents an emerging environmental concern not fully captured in traditional carbon accounting methodologies.