Sustainability in Plastic Packaging: Life Cycle Assessment
Life Cycle Assessment (LCA) quantifies environmental impact of plastic packaging from raw material to end-of-life. This article examines LCA methodology and carbon footprint reduction strategies.
LCA Methodology (ISO 14040/14044)
- Goal & 範囲: Cradle-to-grave analysis
- Functional Unit: 1000 ボトル (500ml capacity)
- System Boundaries: Raw material, production, transport, use, disposal
- Impact Categories: GWP, water use, energy, eutrophication
Carbon Footprint Data
- Virgin PET: 2.8-3.2 kg CO₂e/kg resin
- rPET (50%): 1.6-2.0 kg CO₂e/kg
- rPET (100%): 0.8-1.2 kg CO₂e/kg
- HDPE: 1.8-2.2 kg CO₂e/kg
Carbon Reduction Strategies
- Lightweighting: 35-40% reduction
- rPET content: 50-75% reduction vs. virgin
- Renewable energy: 60-80% reduction in production emissions
- Local sourcing: 10-15% transport reduction
Circular Economy Metrics
✓ Recyclability: PET is 100% recyclable
✓ Recycled content: まで 100% rPET achievable
✓ Design for recycling: Avoid PVC labels, use water-soluble adhesives
✓ Extended Producer Responsibility (EPR) コンプライアンス
Sustainability Certifications
✓ APR Design for Recyclability
✓ RecyClass certification (EU)
✓ How2Recycle labeling
✓ Carbon Trust certification
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