Sumitomo Riko, Riken advance product lifespan with ‘self-healing rubber’

Brussels – Japan’s national research institute Riken and rubber parts maker Sumitomo Riko have developed a ‘self-healing rubber’ with potential to improve product lifespan.

In a 27 Jan statement, Sumitomo Riko said the partners conducted comparative durability testing between existing rubber materials and the newly designed self-healing rubber.

The test, it noted, demonstrated a trend towards a longer material life.

According to Sumitomo Riko, the project, which was launched in 2024, aimed to address ‘microcracks’ in rubber materials that develop after repeated use.

By applying Riken’s materials design technology, the research sought to enable rubber to “self-heal” after damage or to be repaired through simple processing.

Following the comparative test, Sumitomo Riko said the rubber’s commercial use could have both environmental and cost benefits, such as extending product lifespans, reducing waste, and easing maintenance burdens.

Moving forward, the partners said they will focus on analysing the factors behind the observed durability improvement and exploring potential application areas and specification optimisation.

Sumitomo Riko said the project aligns with its “2029 Sumitomo Riko Group Vision”, which aims to support “a green and comfortable society” through collaboration both internal and external partners.