Products and Services
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|Item||FY 2017 results||FY 2018 results|
|Ratio of environmentally friendly products to all products handled||(Consolidated) 100.0%||(Consolidated) 100.0%|
|Reuse and recycling ratios for used products and packaging materials||
Packaging materials 97%
Packaging materials 97%
Why is “Environmentally Friendly Products” a critical issue to be addressed?
Explanation of the reason and background
Policies and stance relating to products and services
Measures for vision achievement
We will not only reduce emissions of greenhouse gases through products, but also work to ensure safety and comfort through means such as resource recycling, resource savings, and the reduction of chemical substances contained in our environment friendly products. For new products, because we conduct environmental assessments at the beginning of the development process and have a framework under which development is not allowed if products do not clear our Environmentally Friendly Products Regulations*, all new products that are released are environmentally friendly products.
- Environmentally Friendly Products Regulations:
The Yokohama Rubber Group defines environmentally friendly products as newly developed products for which the average score of the four items of global warming prevention, resource recycling, resource conservation, and safety and comfort exceeds 5%, and for which the score for any of these items has not deteriorated.
<Four Pillars of Environmental Function and Environmental Performance Evaluation Index>
Results for the environmental contribution ratio (overall)
A performance assessment was not conducted for the degree of environmental contribution and environmental impact in the development of environmentally friendly products.
In terms of the improvement effects, 87% of standard passenger vehicle tires manufactured in Japan were fuel efficient tires, and CO2 emissions were reduced by approximately 734 thousand tons for GHG emissions at the stage of product use (Scope 3) indirectly emitted through the supply chain.
Resin Adhesive (WS-242/AN-1)
Yokohama Rubber has succeeded in developing primer-less adhesive technology, and has launched a new adhesive product made from vegetable oil which features this technology.
This new adhesive product facilitate the use of plastic components in automotive manufacturing, which in turn contributes to reducing the burden on the environment by making it possible to reduce vehicle weight by around 40%.
High-pressure Hydrogen Gas Hoses (ibar HG82)
Yokohama Rubber has developed a new hose specification that features a reinforced hybrid hose structure utilizing PBO fiber (Polybenzoxazole fiber) and steel wire, and has launched new hose products that meet the requirements outlined above.
Fuel-efficient Tires (BluEarth GT AE51)
iceGUARD studless G075 SUV tires
ECOTEX energy-saving conveyor belt
Taiheiyo Cement Corporation was also awarded the Limestone Association of Japan’s Best Achievement Award at the 77th Limestone Mining Convention because of this replacement.
Car air conditioner hoses that support next-generation coolant
IHX that improves cooling efficiency of car air conditioners
Currently, HFC-134a, which is widely used as a coolant in car air conditioners, has a high GWP*2 of 1,430, so the switch to HFO-1234yf (GWP = 4) with a low coefficient is progressing to prevent global warming. On the other hand, while the cooling efficiency of HFO-1234yf is lower than for HFC-134a, the developed double-tube internal heat exchanger can cover this drop in cooling efficiency. With a double-tube structure that integrates a part of two coolant tubes that were conventionally configured separately and using the temperature difference between the high-temperature and low-temperature coolants to exchange internal heat, it improves the cooling efficiency of the entire air conditioning system (Fig. 1). In addition, it was necessary to design the pipes according to the layout of the engine room since the car air conditioning system is piped in a narrow space there, but the piping could be designed freely as with conventional air conditioning by arranging the fins inside (Fig. 2) since the coolant flow path is not crushed even if it is bent. The newly developed double-tube internal heat exchanger has already been adopted.
- 1：IHX＝Internal Heat Exchanger
- 2：GWP=Global Warming Potential
Hamatite SC-DM2 two-component polysulfide sealant for floor joints
BluEarth-air EF21 light weight fuel-efficient tires
BluEarth-air EF21 adopts Yokohama's latest lightweight design technology with the aim of contributing to weight reduction of the entire vehicle to improve fuel efficiency and contributing to the environment through reducing used resources. We achieved a lightweight, thin and highly rigid structure with a weight reduction of about 25% in mass*. A newly developed exclusive compound and the latest rubber mixing technology A.R.T. Mixing were also adopted. In the domestic tire labeling system, the rolling resistance performance has received the highest grade of "AAA" and wet grip performance has received "a", meaning it exhibits excellent fuel efficiency and wet performance.
BluEarth-air EF21 was developed in commemoration of the company’s 100th anniversary and only 100 were sold in December 2017.
For other products, at the end of fiscal year 2017, we achieved 100% environmentally friendly products for all products sold in Japan and overseas. In the future, we will maintain 100% environmentally friendly product production and enhance activities to further improve the environment.