sumitomo rubber

Sumitomo Rubber and Tohoku University Visualize Strain-Induced Crystallization Distribution in Rubber

Sumitomo Rubber, in collaboration with professors at Tohoku University’s Institute of Multidisciplinary Research for Advanced Materials, has succeeded in visualizing the nanometer-scale distribution of strain-induced crystallization inside polyisoprene rubber, a synthetic polymer with the same chemical structure as natural rubber. In general, when rubber is subjected to large deformations, the polyisoprene molecular chains are stretched, causing strain-induced crystallization, which is...

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Sumitomo Rubber Establishes Co-Creation Research Hub at Hokkaido University

In August, Sumitomo Rubber opened a new research hub, the Sumitomo Rubber Innovation Base Sapporo, within Hokkaido University’s Data-driven Research and Development Center for Emergent Systems (D-RED). At this hub, the company will promote research and practical applications of advanced technologies such as Physical AI, which makes autonomous decisions and actions in the real world. The initiative takes on the...

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Sumitomo Rubber to Fully Expand Dunlop Brand Overseas

Sumitomo Rubber will accelerate the rollout of its Dunlop brand tire products in Europe, North America, and Australia. Since dissolving its global alliance with Goodyear in 2015, the company had been unable to use the Dunlop brand in those regions and instead focused on expanding the Falken brand. However, in May 2025, Sumitomo Rubber acquired the Dunlop trademark rights for...

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Sumitomo Rubber and Hokkaido University Establish Joint Research Hub

Sumitomo Rubber has announced the opening of a new research hub, the Sumitomo Rubber Innovation Base Sapporo, within the Data-Driven Research and Development Organization for Future Creation (D-RED) of Hokkaido University’s Institute for the Promotion of Business-Regional Collaboration. At this new hub, Sumitomo Rubber, with expertise in rubber and advanced material R&D, will collaborate with Hokkaido University, known for its...

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Sumitomo Rubber Posts Lower Sales and Profit in First Half

Sumitomo Rubber posted a decline in both sales and profit for the first half of the fiscal year ending December 31, 2025, but said its shift toward a more premium product mix continued to make progress. For the January–June period, revenue under IFRS came to 572.19 billion yen ($3.88 billion), down 2.5% from a year earlier. Business profit dropped 33.1%...

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Sumitomo Rubber Introduces Circular Carbon Black in Racing Tires

Sumitomo Rubber has announced the adoption of circular carbon black in some of its racing tires, marking a significant step in the company’s circular economy initiative known as Towanowa. This marks the company’s first application of resource-circulated carbon black in tire production. The new racing tires were used in the GT300 class of the 2025 Autobacs Super GT Round 4...

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