Yokohama Mold Co., Ltd. (YMC)

Business activities

Production and distribution of tire molds

Total site area

16,563 m2

Number of employees

123 (as of December 2018)


2227-1, Kamitamari, Omitama City, Ibaraki 311-3436, JAPAN

Contact for consultation and complaints

Corporate General Affairs and Procurement Department Tel: +81-299-26-1417 Fax: +81-299-26-3316

Message from the President

Riichiro Mama

This company became a member of the Yokohama Rubber Group in August of 2009, thus continuing the traditions of tire mold production which commenced with a group of companies established in 1916. Currently, besides undertaking all tire mold and related product development, design and production work for the Yokohama Rubber Group, we also undertake global procurement tasks.

In regard to environmental protection activities, YMC acquired ISO 14001 certification in 2010, and achieved its “zero emission” target in 2013. We are currently aiming to realize further improvements, using new technology and improvement of our production processes to achieve resource savings and reduce emissions, and endeavoring to implement thorough energy-saving activities.

Striving to be a company that grows and develops alongside its stakeholders, we are working to improve working conditions for our employees, implement effective manpower cultivation, promote communication with local communities, and strengthen relationships with suppliers.

As a member of the Yokohama Rubber Group, we are committed to becoming “a company having world-class strengths in technologies for protecting the environment”, and we are committed to implementing measures that can both contribute to the promotion of environmental activities and enhance operational efficiency.

Organizational Governance

Promoting compliance

In line with our corporate philosophy of “delivering the best products at competitive prices and on time,” we have established a policy whose abbreviated title is “SEQPCDT” (S: safety, E: environment, Q: quality, P: production, C: cost, D: delivery, and T: training). This policy addresses the three important issues listed below.

In addition, besides working to enhance the capabilities of our internal auditing staff so as to strengthen governance, we are also working to make necessary adjustments to relevant rules and guidelines.

Important issues
  1. Reducing the environmental burden by raising productivity.
  2. Developing new technologies and environmentally-friendly products.
  3. Emphasizing human resources cultivation and compliance.

Human Rights

Workplace Compliance Seminar in progress

“Workplace Compliance Seminars” are conducted for all employees. We are also working hard to raise the understanding of human rights.

Labor Practices

Reporting on safety response measures


Meetings of the health and safety committee are held every month, and safety patrols are implemented; by recording “near-miss incidents,” we work to identify unsafe locations and make improvements.
In addition, in May each year we implement a disaster response drill in which all employees take part.


Besides recruiting recent graduates on a regular basis, we also adopt a proactive approach towards recruiting mid-career hires for full-time positions. We value the capabilities and experience that mid-career hires possess, and we recruit employees of different nationalities over a wide age range.

Education and training for employees

In addition to education and training carried out within our company, we proactively implement human resources cultivation that makes effective use of the Yokohama Rubber training system.

Employment of people with disabilities

The company has met its statutory obligations with respect to the employment of people with disabilities.

The Environment

Environmental management

Environmental policy

Yokohama Rubber’s management policies have established “Deal fairly with society and value harmony with the environment” as a norm, and we aim to become “a company having world-class strengths in technologies for protecting the environment” in accordance with this.

  1. As a company, with senior management taking the lead, Yokohama Mold is working on measures that take the environment into consideration in all areas of its business.
  2. By intensifying communication with stakeholders and promoting collaboration with other companies in the value chain, Yokohama Mold is striving to make a positive contribution to the local community and to society.
  3. Our environmental management systems have been strengthened, and we are taking steps on an ongoing basis to advance the prevention of both environmental pollution and sensory discomfort, and to improve protection of the environment.
  4. We will comply with environmental laws and regulations, and all other applicable requirements. Furthermore, we shall dedicate ourselves to improving the environment around us.
  5. We are promoting efforts to help prevent global warming, save energy, economize on resource utilization and promote recycling, with the aim of realizing the “cyclical society” and the “low-carbon society.”
  6. Through our business activities, we are working to help safeguard biodiversity and ensure that biological resources can be used in a sustainable manner.
  7. Yokohama Mold will seek to promote harmony with the planet, aiming to become a company that contributes to environmental protection while being trusted by local communities.
  8. Our environmental policies will be made available to the public.

Plant survey in progress

Case study examples of dealing with environmental issues

With the aim of reducing the amount of waste generated during tire production, Yokohama Mold is developing and adopting new, environmentally-friendly tire molds.
In regard to industrial waste generation, Yokohama Mold continues to operate as a “zero emission” company.
To further reduce CO2 emissions, the company is implementing thorough energy conservation measures in regard to production facilities, by upgrading equipment to reduce power consumption, reducing the time needed to complete machine processing tasks, etc.
Other measures being implemented on an ongoing basis to reduce electric power consumption include the deployment of a “Green Curtain,” the use of bubble wrap that is normally used for packaging to improve window insulation, the fitting of timers to warm-water type toilet seats, etc.
We are also actively implementing activities to safeguard biodiversity.

Environmental data

Move the screen to the left or right to see the table information

Category FY 2014 FY 2015 FY 2016 FY 2017 FY 2018
Waste generated (t) 184 235 224 226 210
Water usage (1,000m3) 4.1 2.6 2.7 1.9 1.6
Greenhouse gas emissions (1,000t-CO2) 0.82 0.70 0.80 0.85 0.87

Fair Operating Practices

Basic transaction contracts are concluded with our business partners, and we develop relationships with them that are based on a sense of fairness.
With respect to our major business partners, information is exchanged with them on a regular basis; we are also using video-conferences with overseas business partners to strengthen communication.
We are also proceeding with the formulation of purchasing rules aimed at the realization of fair and equitable transactions.

Consumer Issues

While we do not market our products directly to consumers, we endeavor to keep up to date with consumer trends by attending meetings to exchange information with Yokohama Rubber’s product development department, and by attending Yokohama Rubber’s new product development meetings.

Community Involvement and Development

As part of our community contribution activities, we strive to provide opportunities for young people, who represent the future, to experience playing an active role in society, for example by providing workplace experience learning opportunities for local junior high school students and offering internships to students from neighboring vocational schools. We have also created an environment that makes it easy for our employees to contribute to the local community, e.g. by formulating a volunteer leave system.

Yokohama Forever Forest Project

We are raising plant seedlings for the purpose of providing them to the local community.
We are also using the knowhow that we have developed to participate in related activities as a core member of the Yokohama Rubber Group.

Relationship with the local societies

Every year in October, we hold the “YOKOMO” family festival, which helps to strengthen communication and exchange between employees, their families, and local residents.
The most recent “YOKOMO” family festival featured a performance by the “Tamari Sosaku Taiko” taiko (traditional Japanese drumming) group, whose members include several YMC employees, as well as refreshment booths built by hand by YMC staff, all of which was very well-received by the participants.
We are participating members of the Omitama City Social Welfare Council, the Omitama City Corporation Liaison Council and the Tamari Industrial Zone Liaison Council. We also strive to maintain close links with the local community in other ways, for example by distributing seedlings for use in the Omitama Friendship Festival.