Envelopes (box of 50)

Material Composition Assumptions

A standard box of 50 envelopes weighs between 150-200 grams and consists primarily of paper materials sourced from either virgin or recycled wood fiber. The paper component makes up approximately 140-185 grams representing 90-95% of the total weight. Small amounts of adhesive materials, typically gum-based or synthetic compounds, account for 8-12 grams or roughly 4-6% of the total mass. Some envelope designs include optional plastic window films adding 2-4 grams, while specialized products may incorporate security features that contribute minimal additional weight.

The paper substrate undergoes bleaching and coating processes that increase the overall carbon intensity by 10-15% compared to unprocessed paper products. The choice between virgin and recycled fiber content significantly influences the environmental profile, with most commercial envelopes containing 75-90% recycled content to reduce costs and environmental impact.

Manufacturing Geography

Envelope production occurs primarily in North America where paper mills benefit from abundant forest resources and relatively clean electricity grids. The regional grid intensity of 475 gCO2e/kWh reflects a mix of hydroelectric, natural gas, and renewable sources that provide moderate carbon intensity compared to global averages. North American facilities dominate this market due to established pulp and paper infrastructure, proximity to raw materials, and cost-effective logistics networks serving major commercial markets.

Manufacturing in this region leverages existing paper mill capacity and converting facilities that can efficiently process both virgin and recycled fiber inputs. The integrated nature of North American forestry and paper industries enables streamlined supply chains from raw material extraction through final envelope production.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated CCI Score	Adjustment vs Default
North America (Hydro)	330 gCO2e/kWh	8.4	-30%
North America (Mixed)	475 gCO2e/kWh	12.0	Baseline
Europe	385 gCO2e/kWh	10.5	-12%
Asia (Coal-Heavy)	650 gCO2e/kWh	15.6	+30%
South America	290 gCO2e/kWh	9.0	-25%

Provenance Override Guidance

1. Submit verified recycled content percentages with third-party certification documentation showing the exact proportion of post-consumer recycled fiber used in envelope production.

2. Provide energy source documentation from the manufacturing facility including renewable energy certificates, power purchase agreements, or utility grid mix data for the specific production location.

3. Supply transportation distance and mode data covering raw material shipment to the mill, conversion facility logistics, and final distribution to point of sale.

4. Document chemical processing intensity including bleaching sequences, coating applications, and any specialized treatments that may deviate from standard envelope manufacturing processes.

5. Furnish facility-specific energy consumption data in kWh per unit produced along with any on-site renewable energy generation or energy efficiency measures implemented at the manufacturing location.

Methodology Notes

• The CCI score represents cradle-to-gate emissions covering raw material extraction through finished envelope production but excluding end-of-life disposal
• Scope 3 emissions dominate at 80% of total impact due to upstream paper production processes including forestry operations, pulping, and chemical inputs
• Functional unit covers one box containing 50 standard business envelopes weighing approximately 175 grams total
• Manufacturing energy represents 10% of emissions through Scope 2, reflecting the converting process that transforms paper rolls into finished envelopes
• Transportation emissions account for 20% of total impact covering multiple logistics stages from forest to final packaging
• Data gaps exist around adhesive production impacts and regional variations in forestry management practices
• Bleaching and chemical processing contribute 25% of emissions through various Scope 3 categories related to chemical manufacturing