HDPE Plastic Bottle (1L)

Material Composition Assumptions

A typical one-liter HDPE plastic bottle weighs approximately 30 grams and consists primarily of high-density polyethylene resin comprising 95% of the total weight. The remaining material includes processing additives such as stabilizers, colorants, and slip agents that account for 3% of the weight. The bottle cap, typically made from HDPE or polypropylene, contributes the final 2% of the total product weight. This composition assumes virgin HDPE resin as the primary material, though recycled content can vary significantly depending on the manufacturer and regional availability of post-consumer recycled materials.

Manufacturing Geography

China dominates global HDPE bottle manufacturing due to its extensive petrochemical infrastructure and integrated supply chains connecting resin production to bottle manufacturing facilities. The country’s grid electricity intensity of 555 gCO2/kWh reflects the coal-heavy energy mix that powers most industrial operations, directly impacting the carbon footprint of energy-intensive processes like resin production and blow molding. Chinese manufacturers benefit from proximity to major petrochemical complexes and lower labor costs, making it the preferred location for large-scale bottle production serving both domestic and export markets.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated CCI Score	Adjustment vs Default
China	555 gCO2/kWh	52	Baseline
India	632 gCO2/kWh	56	+8%
United States	386 gCO2/kWh	45	-13%
Germany	366 gCO2/kWh	43	-17%
Canada	130 gCO2/kWh	35	-33%

Provenance Override Guidance

1. Material composition data showing the percentage of recycled HDPE content versus virgin resin, as this represents the single largest opportunity for emission reductions.

2. Specific electricity grid data or renewable energy certificates for the manufacturing facility, including any on-site renewable generation that differs from regional grid averages.

3. Transportation distance and mode documentation from resin supplier to bottle manufacturing facility, particularly for facilities using imported recycled content.

4. End-of-life treatment specifications for the target market, including local recycling rates and waste management infrastructure capabilities.

5. Production efficiency metrics such as energy consumption per unit and material waste rates during the blow molding process.

Methodology Notes

• The CCI score represents cradle-to-grave emissions for a single one-liter HDPE bottle including material production, manufacturing, distribution, and end-of-life treatment.

• Scope 3 emissions dominate the impact profile due to energy-intensive petrochemical processes required for virgin resin production and polymerization.

• The functional unit is one complete bottle including cap, assuming single-use application without refilling or reuse scenarios.

• Excluded impacts include retail refrigeration, consumer transportation, and potential recycling benefits beyond the immediate product system.

• Data gaps exist around regional variations in recycled content availability and the carbon intensity of waste management systems in different markets.