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Yokohama Rubber's
Important Issues
1For the Global Environment

Yokohama Rubber addresses environmental issues by developing and providing sustainable products.

We challenge to build a sustainable society in harmony with the environment, to protect our blue planet and human beings.

We aim to support the hydrogen energy society of the future with
our high-pressure hydrogen gas hoses

2015 marks "the first year of hydrogen," the year when the full-scale market deployment of hydrogen fuel cell vehicles (FCVs) began. Because emission-free, energy-efficient FCVs are considered to be the ultimate eco-cars, the development of hydrogen stations is assumed to be one of the priorities of infrastructure development across the country. Yokohama Rubber has been working on the development of the hoses necessary for supplying high-pressure hydrogen gas to FCVs.
In accordance with the recent adoption in Japan of the "Global Technical Regulations (GTR) for hydrogen and fuel cell vehicles" and the subsequent revision to Japan’s safety regulations for containers, it is now possible in Japan to provide hydrogen to FCVs at the international standard of 87.5 MPa, so that appropriate hoses corresponding to the new standards are required. An enhanced development team at Yokohama Rubber has been working on the development of 87.5MPa-compatible hoses as required by current regulations, under a project commissioned by the New Energy and Industrial Technology Development Organization (NEDO).
Under a joint research project with Iwatani Industrial Gases Corp., Yokohama Rubber has been actively seeking out new applications of hoses for high-pressure hydrogen gas, and has developed a 35MPa-compatible hose, "ibar HG35," and a 70MPa-compatible hose, "ibar HG70." Currently, we are making the best use of the hose design and technology we have thus developed, the hose evaluation technologies developed in hypothetical real-use environments, and the knowledge gained from hydrogen station demonstrations, to advance the development of safer and more reliable 87.5 MPa-compatible hydrogen gas hoses. We are also working in collaboration with Iwatani Corporation, the operator of hydrogen stations, to enhance our developmental team in response to market needs.
With our development of high-pressure hydrogen gas hoses, backed up by our leading design and evaluation technologies, we have already begun to tackle our goal to contribute to building the infrastructure necessary for a hydrogen energy society.

Message from the team
Nariaki Ishikawa, Ikuma Yusa, Naoshi Yamaguchi,Mie Okura, and Tatsuya Minaguchi Hoses and Couplings Division, Susumu Hatanaka MB Materials Development Division, Hideaki Washio Hoses and Couplings Sales Division

Energy-efficient, greenhouse gas-free hydrogen will surely become a common energy source essential to our everyday life in the future. As the use of hydrogen energy has expanded to household fuel cells as well as FCVs, and is still expanding, Yokohama Rubber is committed to the development of hydrogen gas hoses that ensure stable operation in a variety of harsh environments. Our hope as the development team is to make contributions to the solution of global warming thorough product development in support of supplying low-carbon energy.

Nariaki Ishikawa, Ikuma Yusa, Naoshi Yamaguchi, Mie Okura, and Tatsuya Minaguchi
Hoses and Couplings Division
Susumu Hatanaka
MB Materials Development Division
Hideaki Washio
Hoses and Couplings Sales Division

Message from the manager of Iwatani Corporation
Mr. Ryuichi Hirotani
Senior Manager, Hrs systems, Hydrogen energy division, Iwatani Corporation

The development of hoses that meet the three stringent requirements of hydrogen, high-pressure, and low-temperature, requires extremely high technological competence. We sense Yokohama Rubber’s earnestness to stay the course in addressing each issue, even in the face of various obstacles. We expect that Yokohama Rubber will realize Japan’s first 87.5MPa-compatible hose in practical use, and that its specification will become the global standard. As we also have many years of knowledge regarding hydrogen, we would like to continue our joint research in order to realize the clean hydrogen energy society of the future.

Mr. Ryuichi Hirotani
Senior Manager,
Hrs systems, Hydrogen energy division, Iwatani Corporation