Life cycle assessment of returnable mailers used for apparel electronic commerce: A case study in Canada

Abstract

E‐commerce is increasingly popular in the fashion industry in Canada. Based on a case study, this research analysed the environmental sustainability of the returnable e‐commerce package format distributed in Canadian apparel retail channels. The case study compared the environmental impacts of a returnable polypropylene mailer to those of two different expendable packaging formats currently used by a brand owner, such as a corrugated paperboard package and a low‐density polypropylene mailer. A life cycle assessment (LCA) was conducted to examine the environmental impacts of the three packaging scenarios. The foreground data of the LCA were obtained from a brand owner and packaging suppliers in 2021. TRACI 2.1, including 10 life cycle impact categories, was used for the LCA. The comparative LCA results showed that the returnable mailer generated the lowest environmental impact for eight out of 10 impact categories when the final consumers' locations were relatively close to the brand owner or returnable packaging service provider. The expendable corrugated paperboard packaging format contributed the greatest environmental burden in all the impact categories primarily because it used a large amount of material and was relatively heavy. However, the comparative results were changed for some impact indicators depending on the final consumer's location and the number of reuse cycles for the returnable mailer. Specifically, the returnable mailer had a higher environmental impact than the expendable mailer for half of the 10 impact categories when the number of reuses for the returnable mailer was decreased to 10 cycles.