Promotion of Waste Reduction and Recycling

Conserving Resources and Achieving Zero Emissions

The aim of zero emissions is to recycle waste generated during production processes, switch to beneficial materials that can be put to other industrial uses, and get as close to discharging zero waste as possible. We promote zero emissions activities through controlling the use of direct and indirect materials, emissions and final waste, and reusing and recycling.

The waste produced by our business activities includes metal scrap, oil and liquid waste, grinding sludge, packaging, and plastic waste. By thoroughly separating our waste, we reuse or transform waste into usable materials, such as by turning steel scrap into steel-making material, sludge with grinding wheel dust into cement material, and oil and plastic waste into fuel.

As we work to conserve resources and promote zero emissions, we achieved an emissions rate (volume of waste disposed/total discharged) of 0.19% in 2018, once again reaching our annual target of less than 0.50%.

Waste Recycling Methods
  • 1 Material recycling: Reusing waste as raw material for another product
  • 2 Thermal recycling: Using waste as combustion material

Sorting and Recycling Office Automation Waste

In October 2018, the Kofu plant began sorting the waste generated from office automation by taking apart old printers, ink cartridges, control panels, and PCs that cannot be repaired and separating the circuit boards, steel, and plastic components from its mixed waste (which includes steel, plastics, vinyl, and glass) whenever possible. The sorted steel and circuit boards are used as recycled materials.


Reduced Use of Dust-Proofing Plastic Bags

The THK RHYTHM MALAYSIA facility manufactures automotive steering and suspension components. They have been wrapping components in plastic bags to prevent dust adhering to the parts as they are put in containers and transferred between the machining and assembly processes. As part of their efforts to reduce their plastic bag use, this facility began putting parts directly into containers and then covering stacks of those containers with plastic. As a result, they reduced their use of plastic bags by 82% compared to the previous year.

Plastic bags used Plastic bags eliminated
2017 254,547 209,904 (82% reduction)
2018 44,643