Aiming for high-performance, high-quality release liner that meets various needs

Since our founding in 1951, we have continued on the path of technological innovation through Kaito Chemical Industry (renamed Kaito Chemical Industry in 1972). 1955 saw the first successful production of polyethylene laminated paper in Japan, and in 1964 we perfected the technology for manufacturing release liner and launched in 1964, we perfected the technology for manufacturing release liner and launched
Release liner is used with adhesive/adhesive products that are indispensable for a wide variety of applications, including the assembly processes of automobiles, home appliances, information and electronic equipment, construction materials, and marking sheets, as well as for the double-sided adhesive tapes that consumers see for band-aid and stationery applications. We have conducted R&D to meet the high demands for release liner used in these various adhesive and bonding products, and our products have earned a high reputation both in Japan and overseas for their high quality.

Based on our management philosophy, which is centered on “corporate prosperity through social contribution through business” and “demonstrating creativity and anticipating social progress and change,” we will continue to work with a sense of speed to meet the various needs and demands of a changing world.

Based on good communication with our customers, we intend to further strengthen our relationship of trust. On this basis, we will demonstrate our uniqueness and aim for further growth as a manufacturer of release liner based on our technology.
We look forward to your continued support and guidance.

• Company

  Sumika-kakoushi Co.,Ltd.

• Head Office Location

  1-8, Nihonbashi-Koamicho, Chuo-ku, Tokyo 103-0016, Japan(Kayabacho Takagi Bldg. 4F)

• Establishment

  June 26, 1951

• Commencement of business

  October 1, 2005
  (As Sumika-kakoushi Co.,Ltd.)

• Business

  Manufacture and sale of release liner Sumilease

• Capital stock

  460 million yen

• President and Representative Director

  Keiichi Sakata

• Shareholder

  Sumitomo Chemical Co., Ltd. (100%)

• Number of employees

  120 (as of April 1, 2025)

• ・ Accomplish company’s prosperity by contributing to the society through business.
• ・ Take in advance society’s progress and change by showing originality.
• ・ Expedite tasks with great faithfulness and positiveness centering on customer-oriented.
• ・ Establish corporate culture of creativeness and development with highly challengeable spirit.

Based on our management philosophy of “contributing to society through our business,” we have established the following quality policy to meet the demands and expectations of our customers, and all employees shall understand it and carry out our business activities.

• 1．We will comply with all relevant laws and regulations.
• 2．We provide products and services that satisfy our customers in terms of quality, safety, delivery, and cost.
• 3．We will reduce any nonconformities that occur in the process.
• 4．We will set quality targets, periodically review their achievement, and take all possible measures to achieve them.
• 5．This quality policy will be continually revised to reflect changes in our customers and the environment.

We have obtained ISO 9001 certification for our Iwaki Factory and business units, and is operating a QMS.

Based on our management philosophy of “Coexistence and co-prosperity with the society” and “Reduction of environmental load”, we have set our environmental policy as follows so we promote environmental conservation and efficient use of resources and carry out our corporate social responsibility. All our employees will perform their business activities with the understanding of this policy.

• 1．We will protect the environment by assessing the purpose of reducing the environment load that products generate across their entire life cycle, from development and manufacture of the release liner through to disposal.
• 2．We will prevent environment pollution not only by complying with all environment laws, but also by making a voluntary effort.
• 3．While recognizing the finite nature of resources, we will strive to make effective use and promote conservation of resources and energies as well as waste reduction.
• 4．We will strive to coexist and prosper with the local community by communicating with local authorities and residents.
• 5．In order to achieve our environmental targets, we will prepare management plans and review progress periodically, thereby continually improving our environmental management system and performance.

We have obtained ISO 14001 certification for our Iwaki Factory and are operating an EMS.

• Head Office

  Administration / Logistics & Procurement Dept.

  1-8, Nihonbashi-Koamicho, Chuo-ku, Tokyo 103-0016, Japan (Kayabacho Takagi Building 4F)

  TEL.+81-3-6837-9050

  FAX.+81-3-6837-9053

• Sales Division

  Tokyo Sales Group / Planning & Coordination Group

  1-8, Nihonbashi-Koamicho, Chuo-ku, Tokyo 103-0016, Japan (Kayabacho Takagi Building 4F)

  TEL.+81-3-6837-9052

  FAX.+81-3-6837-9053

  Osaka Sales Group

  4-6-17 Koraibashi, Chuo-ku, Osaka-shi, Osaka 541-0043, Japan (Sumika Fudosan Yokobori Bldg. 8F)

  TEL.+81-6-6228-1180

  FAX.+81-6-6228-1182

• Factory

  Iwaki Factory

  3-1-5 Minamidai, Iwaki-shi, Fukushima 974-8242, Japan (in Yamada Industrial Park)

  TEL.+81-246-62-0911

  FAX.+81-246-62-0910