TOP > Sustainability > Environmental > Circular Economy

Circular Economy

Circular Economy

Shibuya promotes the effective use of limited resources and contributes to a circular economy. At our domestic production sites, we place importance on the transition to a sustainable society and promote initiatives aimed at developing clean factories.

Reduce (Source Reduction)

At Shibuya, “Reduce” in manufacturing means minimizing the use of resources and the generation of waste at the stages of product design, manufacturing, and packaging, and it is considered the highest priority among the 3Rs.
Specifically, through measures such as reducing product weight and thickness, improving yields by reducing defects, and enhancing durability to extend product life, we work to reduce raw material and waste disposal costs and curb CO2 emissions.


Key Source Reduction Approaches and Examples

Reduction of Raw Materials and Components (Resource Conservation)


  • Design Review: Reduce product weight and the number of parts
  • Simplified Containers and Packaging: Use thinner glass and PET bottles and eliminate excessive packaging
  • Improved Yield: Improve production accuracy to minimize scrap materials and defective products (waste)

Extended Product Life (Long-Life Design)

  • Use highly durable materials to manufacture long-lasting products
  • Strengthen repair and maintenance systems and adopt designs that assume reuse

Process Efficiency Improvement

  • Reduce consumables and emissions by improving cleaning and processing technologies (e.g., introducing dry ice cleaning)
  • Reuse by-products for the effective use of resources

Reuse

Reuse is an important circular model in which used products and components are disassembled, cleaned, repaired, and reused, or remanufactured, in order to extend product life, reduce waste, and lessen environmental impact.
According to the Ministry of the Environment, reuse is also regarded as a high-priority initiative within the 3Rs (Reduce, Reuse, Recycle) and is expected to help reduce resource consumption and CO2 emissions.

Recycle

In manufacturing, recycling is an important initiative that helps reduce waste, lower costs, and lessen environmental impact, including decarbonization, by turning waste plastics, metal scrap, sludge, and other materials generated at factories into reusable resources through material, chemical, and thermal recycling.

Key Recycling Methods and Initiatives

  • Material Recycling: Crushing and melting waste plastics and metals for reuse as raw materials
  • Chemical Recycling: Chemically breaking down waste and converting it back into raw materials or monomers for reuse
  • Thermal Recycling (Energy Recovery): Using heat energy generated by waste incineration or recycling waste as raw material or fuel for cement production
  • Promotion of the 3Rs: In addition to recycling, incorporating Reduce (source reduction, such as optimizing the layout of metal sheets) and Reuse from the design and development stages