Mitsui Chemicals, Lawson Break New Ground in Convenience Store Industry With "Bio & Circular" Initiative

TOKYO — In a significant step toward decarbonizing the Japanese retail sector, Mitsui Chemicals, Inc. and Lawson, Inc. have announced the launch of a comprehensive “Bio & Circular” initiative. This partnership marks a turning point in the convenience store industry, introducing biomass-based plastics into daily store operations at a scale previously unseen in the region.

Mass Balance Implementation

At the core of this initiative is the adoption of Mitsui Chemicals’ bio-based polypropylene (Bio-PP) and bio-polyethylene (Bio-PE) for Lawson’s private brand packaging and in-store cutlery. Utilizing a mass balance approach, Mitsui Chemicals produces these materials using bio-based hydrocarbons derived from renewable resources such as waste cooking oil and residue oil.

This method allows for the allocation of biocontent to specific end-products while utilizing existing petrochemical infrastructure. The materials produced under this partnership are certified under the International Sustainability and Carbon Certification (ISCC PLUS) system, ensuring traceability across the supply chain.

The “BePLAYER™” Contribution

The initiative leverages Mitsui Chemicals’ “BePLAYER™” brand, which focuses on carbon-neutral solutions. By replacing fossil-based feedstocks with bio-based alternatives, the companies aim to significantly reduce Scope 3 greenhouse gas emissions associated with product packaging.

Lawson has begun the phased rollout of these materials in select beverage cups and bento containers across its network. The physical properties of the Bio-PP maintain the exact heat resistance and durability standards of conventional petroleum-based plastics, ensuring no disruption to consumer experience or food safety.

Advancing the Circular Economy

Beyond material substitution, the “Bio & Circular” initiative lays the groundwork for future closed-loop recycling schemes. The companies are currently evaluating logistics for collecting used plastics at Lawson storefronts for chemical recycling, aiming to return waste plastic back into the raw material stream for Mitsui’s production facilities.

This collaboration highlights the growing trend of chemical suppliers integrating directly with brand owners to accelerate the transition from linear to circular plastic economies.

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