Initiatives to reduce environmental burden
Promoting Energy Saving and Reducing CO2 Emissions
We are promoting energy saving by upgrading production equipment, and as part of those upgrades, making production processes more efficient. Through these systematic efforts, our main factory Saitama Headquarters achieved the CO2 emission reduction target of 6% versus base year (the average for fiscal years 2004 – 2006) under the first stage of the Saitama Prefecture's Global Warming Countermeasures Plan System ending in fiscal year 2014, and we have achieved the target of 13% versus base year under second stage (fiscal years 2015 – 2019) ending in fiscal year 2019 .
Example: Compressor Upgrades and Energy Saving in Boilers
Our production processes use equipment driven by high-pressure air generated by compressors, and in fiscal year 2019 we replaced old compressors with highly efficient heat-recovery compressors. After this upgrade, the heat created by compressor is recovered, and it is used to heat the water to be fed to boilers, thereby reducing the amount of city gas used by the boilers.
Example: Boiler Fuel Conversion
The Saitama Headquarters uses six boilers, and five of them have already been converted to use city gas instead of class A fuel oil. Compared with class A fuel oil, city gas not only has a lower CO2 emission factor, it also can reduce NOx emissions and eliminates SOx emissions altogether.
Example: Upgrade to LED Lighting
Lighting at branches and factories is being replaced with LED lighting in stages, with priority based on the age of equipment and amount of electricity used.
Example: Transformer Upgrades
We use transformers in the power receiving and transforming facility to transform the high-voltage electricity provided by electric power companies to power our production equipment, lighting, elevators, and so forth. The Saitama Headquarters is in the process of upgrading its transformer with equipment that is compliant with the Ministry of Economy, Trade and Industry's Top Runner Program based on an upgrade plan of power receiving and transforming facility.
Example: Energy Saving in Cooling Units for Manufacturing Equipment (Chillers)
Previously at the Saitama Headquarters, cooling units (chillers) were used and it was cyclically used to cool manufacturing equipment such as rollers, but because the factory is located in an area with abundant underground water, the geothermal energy is effectively used, and leading to energy saving in cooling units (chillers).
Initiatives Going Forward
During fiscal year 2020, we will work on improving operation of steam boilers and compressors (intermittent operation and individual management of factory by line maintenance), installing LED lighting, and upgrading transformers. By systematically moving forward with initiatives to save energy, we aim to achieve the target for the third stage of the Saitama Prefecture's Ordinance Concerning the Promotion of the Global Warming Countermeasures (ending in fiscal year 2024, 20% reduction versus base year).
By our entire business in fiscal year 2019, we have used 7,906 kl (crude oil equivalent basis) of energy, primarily as electricity and city gas, and CO2 emissions (Scope 1 and Scope 2) were 14,364 t-CO2. NOx emissions were reduced through progress in converting to the use of city gas as fuel, and came to 2.8 tons (Scope 1) in fiscal year 2019.
In addition, fluorocarbons are used as refrigerants in air conditioners, cooling units (chillers) and refrigerators, and daily monitoring, simple inspections and periodic inspections are carried out to prevent leakage.
Initiatives to Use Resources Effectively and Reduce Waste Matter
With regard to the efficient use of raw materials for ink, the Saitama Headquarters uses many raw materials including pigments, resins, and solvents to produce roughly 19,000 tons of ink products annually. T&K TOKA is working proactively toward Sustainable Development Goal 12, "Responsible Consumption and Production" and in our manufacturing of ink products we strive to use resources effectively and practice the "3 Rs" (Reuse, Reduce, Recycle). As part of these processes, we are working to reduce container and packaging materials (the use of link drums and returnable tanks, simplified packaging, and so forth), minimize raw material loss, reuse plastic pallets, recycle corrugated cartons and paper waste from offices, and convert other waste materials into valuables.
Through these initiatives, the Saitama Headquarters has achieved zero emissions. At the Shiga Factory, achieving zero emissions is a priority issue and the entire facility is working to achieve recycling, with each division thoroughly separating waste materials and selecting disposal contractors that are able to recycle them.
Amount of Recycling and Waste Materials (Crude Oil Equivalent Basis)
The ink plant at the Saitama Headquarters and the ink plant and the functional resin plant at the Shiga Factory are taking measures as unpleasant odors are generated. By reviewing raw materials used, installing neutralizing equipment that uses activated charcoal filters and dissolves materials with water, catalytic combustion-type processing facility, and adjusting the directions of exhaust ducts, both facilities meet the standards of the Offensive Odor Control Law, but given that both are located adjacent to residential areas, further improvement is being pursued.
We are aware that our corporate activities need to be carried out with consideration for noise that may disturb adjacent neighborhoods or harm workers, and have introduced a variety of measures to address noise, including installing soundproof walls in production equipment, planting trees throughout the premises, and setting rules for the use of forklifts within the facilities.
Noise levels at both the Saitama Headquarters and Shiga Factory are regularly measured by outside specialists to confirm that regulatory standards are met, and results have been favorable.