Products for Car / Van / 4x4

Continental and Kordsa bring first series tires with Cokoon dip technology onto the road

  • First 250,000 tires featuring Cokoon dip technology currently in production with more to be produced in 2020 and beyond
  • More than 40 industry players already showing interest in open-source technology
  • Licensing pool welcomes interested parties to join

Hanover / Istanbul, February 20, 2020. Continental, the technology company and manufacturer of premium tires, and Kordsa, the global reinforcer, predominantly serving the tire industry, announced today that the series production of the first of 250.000 passenger car tires featuring their new sustainable adhesive technology began in 2019. The two partners have been working together on this new eco-friendly dip technology since 2017.

This new technology enables the bonding activation of textile reinforcing materials with rubber compounds without the use of resorcinol and formaldehyde in the textile dip. Textile reinforcing materials are widely used in tire manufacturing, as well as in the production of mechanical rubber goods such as hoses and conveyor belts.

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Different colors can be applied on textiles while using the new eco-friendly dip technology Cokoon

Since the first announcement of Cokoon as an open innovation technology in March 2019, it has attracted a lot of attention within the industry. More than 40 companies (tire manufacturers, converters, and textile suppliers) have expressed an interest in testing the material and are considering joining the licensing pool. Some 20 of these have already received samples. Now, all of the interested parties have been invited to join the pool and obtain free licensing in order to contribute to the development of this new green technology. The licensing pool is handled by the independent law firm AdvInno. Companies can find more information and the appropriate contacts on the official website

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Close up of a Cokoon showcase tire

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Dr. Andreas Topp, Vice President Material and Process Development and Industrialization at Continental

“The sampling process was a big success and exceeded our expectations. Feedback from the industry encouraged us to proceed with the integration of Cokoon into our tires and to begin series production of the first tires back in 2019. Expanding use of the Cokoon technology in our tire production in 2020 and in the following years is a high priority for us,” says Dr. Andreas Topp, Vice President Material and Process Development and Industrialization at Continental Tires.

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Devrim Özaydin, Global Technology Director at Kordsa

Devrim Özaydin, Global Technology Director at Kordsa, outlines the underlying idea: “With Cokoon, we want to implement an eco-friendly industry-wide standard for bonding textiles and rubber. We therefore invite all interested parties to join the pool, obtain free licensing, contribute to the enhancement of this new open technology and introduce Cokoon into their mass production.”


Side view of a Cokoon showcase tire

Eco-friendly resorcinol- and formaldehyde-free adhesion technology

Cokoon is the brand name of a new bonding system technology which is offered to all other tire manufacturers and their suppliers as an open source solution. The development partners Continental and Kordsa have chosen to waive development or licensing fees. In return, they expect licensees to make their patents concerning the further enhancement of this technology available to the other partners free of charge via a licensing pool. Interested companies can request samples. Prior to Cokoon, the chemicals resorcinol and formaldehyde were irreplaceable in the bonding activation of textile reinforcing materials to the surrounding rubber matrix. The replacement of resorcinol and formaldehyde with more environmentally friendly alternatives is beneficial not only for a sustainable supply chain but also for tire cord manufacturers. It is worth noting that employees in tire plants and end-consumers are not exposed to these substances as they are chemically altered through the vulcanization process. With Cokoon dip technology, the bonding of textiles to rubber is now possible without these two substances and the technology does not require any changes in process equipment. Further information is available on

Klaus Engelhart
Klaus Engelhart

Press Spokesman Passenger Car Tires Germany

Büttnerstrasse 25

30165 Hanover, Germany

+49 (0) 511 938 2285

+49 (0) 511 938 2455