Car Phone Mount (plastic)

Material Composition Assumptions

Plastic car phone mounts consist primarily of thermoplastic polyurethane accounting for approximately 60% of the total weight at 90 grams. Polycarbonate components make up another 25% at roughly 38 grams, providing structural rigidity for the mounting mechanism. Small amounts of polyethylene terephthalate contribute about 8% or 12 grams to the overall composition.

Virgin plastic resins form the foundation of these materials, derived from petroleum feedstocks through energy-intensive processing. Metal fasteners including aluminum or steel components typically represent 5% of the weight at around 8 grams. Adhesives and specialized coatings account for the remaining 2% at approximately 2 grams, enabling proper adhesion and surface finishing.

The total estimated weight for a typical plastic car phone mount is 150 grams, with the vast majority consisting of petroleum-based polymer materials that require significant energy inputs during production.

Manufacturing Geography

China dominates global production of plastic phone accessories due to established supply chains for polymer processing and electronics manufacturing. The country’s grid intensity of 555 gCO2/kWh significantly impacts the carbon footprint of energy-intensive plastic resin production and injection molding processes.

Chinese manufacturing facilities benefit from proximity to petrochemical plants that supply raw plastic materials, reducing transportation emissions between polymer production and final assembly. However, the coal-heavy electricity grid increases emissions from the manufacturing phase compared to regions with cleaner energy sources.

Secondary manufacturing occurs in Southeast Asian countries like Vietnam and Thailand, where growing electronics sectors provide alternative production capacity with varying grid intensities.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated CCI Score	Adjustment vs Default
China	555 gCO2/kWh	42	Baseline
Germany	366 gCO2/kWh	38	-9%
Vietnam	573 gCO2/kWh	43	+2%
Mexico	418 gCO2/kWh	40	-5%
India	684 gCO2/kWh	46	+10%

Provenance Override Guidance

1. Submit detailed material composition data showing percentages of recycled versus virgin plastic content, as recycled materials demonstrate significantly lower carbon footprints.

2. Provide manufacturing facility location and local electricity grid data, including any renewable energy purchasing agreements or on-site clean energy generation.

3. Document specific plastic resin suppliers with their production methods and energy sources, as resin production represents the largest emissions hotspot.

4. Supply transportation data covering shipping distances and modes from raw material suppliers through final distribution to reduce uncertainty in logistics emissions.

5. Include end-of-life planning documentation such as take-back programs or design features that enhance recyclability beyond typical mixed-plastic accessories.

Methodology Notes

• The CCI score represents cradle-to-gate emissions including raw material extraction, processing, and manufacturing through factory completion but excludes consumer use and disposal phases.

• Scope 3 emissions dominate at 70% due to upstream petroleum extraction and plastic resin production, while Scope 2 accounts for 25% from manufacturing electricity consumption.

• The functional unit is one complete car phone mount ready for retail sale, weighing approximately 150 grams.

• Packaging materials and retail display components are excluded from the assessment boundary.

• Data gaps exist around specific additive chemicals and colorants used in plastic formulations, which may slightly underestimate total emissions.

• End-of-life emissions receive limited weighting despite 500+ year decomposition timelines due to methodological focus on near-term manufacturing impacts.