Diab and CompPair announce a collaboration to develop next-generation composite sandwich structures for aerospace and mobility sectors. The partnership integrates Diab s Divinycell core materials with CompPair s HealTech ultra-fast repair technology, enabling impact-damaged composite structures to recover mechanical integrity without traditional, time-intensive repair procedures. Designed for both exterior and interior aerospace components, as well as broader industrial and transportation applications, the solution addresses a critical industry challenge: extending structural lifespan while cutting maintenance downtime and lifecycle costs.

These solutions make it possible to recover from impact and target both exterior and interior aerospace applications, and a wide range of industrial and mobility solutions, improving durability and significantly reducing repair time and maintenance costs.

This partnership combines Diab s 75 years of expertise in high-performance foam cores with CompPair s innovative HealTech healable semi-products. Diab has long led the development and commercialisation of foam core materials for composite sandwich panels, while the Swiss company CompPair brings extensive experience in healable composites and their integration with various core structures.

Since 2025, the two companies have collaborated to combine CompPair s healable skins with Diab s foam cores for applications where durability, repairability, and performance is essential.

Our combined technologies unlock new levels of value for the composites industry, said Kai Arendholz, Group Business Development & Innovation Manager at Diab. We are excited about the possibilities this brings to aerospace structures as well as industrial and mobility applications.

The collaboration has already validated the healing value of CompPair s HealTech solutions and their compatibility with a wide range of sandwich structures using Divinycell foam cores, including HT (PVC), F (PES) and PR (PET) categories. Typical applications include aircraft interior panels, aircraft fairings, radomes, and sandwich body panels for trucks and caravaning. Common impact scenarios include hail, and luggage impacts as well as tool drops, occurring during manufacturing or in service.

The different use cases and healing methods have been validated through impact testing at various energy levels, mechanical testing and fire testing in line with industry requirements.

Across these use cases, the material systems demonstrated strong and consistent technical performance, including effective healing behavior, reliable skin adhesion with cohesive foam failure, and robust flammability performance. The ultra-fast repair procedure enables rapid restoration of structural performance, significantly reducing maintenance costs, downtime, and operational disruption, while also delivering environmental benefits through extended component lifetime.

This partnership shows the powerful synergy between material innovation and repairability, said Ama l Cohades, CEO of CompPair.  Together with Diab, we are pushing the boundaries of composite performance and durability.

Highlighting the customer value, Bertrand Gresle, Sales Account Manager, added, "We are proud to partner with Diab, combining its proven track record of excellence with our healable composite solutions to answer the strong market demand and deliver tangible value to customers across multiple applications.