In general, composite materials are formed by combining two or more materials with different physical and chemical properties, working together to give the composite unique properties.

A composite is made of a matrix such as epoxy resin reinforced with fibres such as carbon or glass. Composites can have properties similar to metals with a fraction of the weight only, so they are used in various industries to reduce weight and thus energy consumption. A composite can also be called a Fibre Reinforced Polymer (FRP).

The matrix (made of resin reinforced with fibres) holds the structure together. When there is a damage or delamination, the resin is impacted so the fibres can move around, dropping the mechanical properties. To gain initial properties, the matrix must be repaired.

CompPair products are preimpregnated textiles (prepregs), the precursors, used to build composite products. Our technology is available with various fibre types, architectures, and areal weights. The first product family, HealTech^TM, is available in UD and Twill with various weights. To enable the added value of CompPair products, it is important to use these at the manufacturing stage, to build the structure entirely with these innovative prepregs.

CompPair’s technology is a new kind of matrix for composite materials that is able to repair itself. CompPair’s composite repair technology can be used with various type of fibers and is currently available as a prepreg to build high quality composite products.

The CompPair team is based in Lausanne, Switzerland. The HQ is at the EPFL Innovation Park and the offices in Renens, Switzerland.

CompPair regularly attends events and tradeshows, you can find the list of 2022 visits here.

CompPair regularly attends events and tradeshows, you can find the list of 2022 visits here.

HealTech^TM, when used to build composite structures, enables the repair of damaged composite products in 1 minute, in place and without any additional material and processing step. All you need to do is to heat the damaged area of the part at moderate temperature, which can be done using a heat gun, a heat blanket, an oven. With CompPair, you don’t have to sand, laminate, and cure the parts, saving you valuable time while ensuring the quality of repair.

With CompPair, repaired parts following matrix damage events are like new. Contrary to current repair processes, which may compromise the integrity of the fibres (creating a weak spot) and change the weight and profile of the products (altering their performances), repair with CompPair maintains the integrity, profile, and weight of the original product.

No, but damage of composites always starts with matrix damage, and the most important is to stop the propagation of such matrix damages and recover the load transfer between the composite layers. Preventive repair can significantly delay fibre damage.

No, CompPair’s products are the base material to produce entire composite parts. Manufacturers need to use our materials during production to enable parts to heal and last longer. Our products are a replacement of traditional prepreg materials to manufacture composite structures.

Yes. On standard laminate thicknesses (1 to 3 mm on glass fibres) repair takes only a minute. For thicker structures, as soon as the heat transfer is efficient, the healing mechanism will take place as fast and thus the whole process lasts only a few minutes.

Watch a healing video demonstrating the composite repair.

CompPair composites can be repaired up to 60 times on the same area, drastically extending the lifetime of the product.

CompPair prepregs can be used in a wide range of applications, from sporting goods to aerospace applications. Everywhere composites are used, CompPair composites can be used! A list of use cases can be found here. The CompPair team is always open for new use cases, feel free to contact us.

Yes. CompPair’s technology can be used with any type of fibre, including natural fibres such as flax. Any requests can be made when ordering HealTech^TM prepregs.

CompPair composites, made with HealTech^TM, meet the performances of traditional thermoset composites, while having the followingadded values: (i) an improved crack resistance, (ii) repeated healing of small damage, (iii) compatibility with current manufacturing processes and (iv) improved recyclability.

Nos préimprégnés ont été conçus pour être aussi proches que possible des préimprégnés standards, rien n'est plus clair que les commentaires du directeur technique et de la R&D d'un grand fabricant de composites :

"Les produits de CompPair Technologies SA ont une drapabilité, un tack et un processus de cuisson standard et sont faciles à manipuler".

Non, nos préimprégnés ont été conçus pour répondre aux normes de mise en œuvre actuelles, le directeur technique et de R&D d'un grand fabricant de composites a validé le processus :

"Les produits de CompPair Technologies SA ont une drapabilité, un tack et un processus de cuisson standard et sont faciles à manipuler".

Veuillez nous contacter pour plus d'informations.

Our first product family, HealTech^TM, has to be cured at 140°C for 3h. An additional postcure at 180°C for 2h can be done.

The T_g (glass transition temperature) of our composites is close to the cure temperature. It will therefore stand in between 140 and 180°C. However, there is a slight decrease of mechanical properties during healing. Please contact us for more information.

Our first product family, HealTech^TM, currently has 7 carbon and glass textiles available, ranging from twill to UD architectures, with different areal weights of fibres. Send an email to contact@comppair.ch to receive the technical datasheets.

The next product families, currently under development, have different mechanical properties and cure conditions, adapted to a range of applications.

CompPair products need to be stored at -18°C like conventional prepregs. Storage in this condition is stable and lasts at least 18 months. At room temperature, our prepregs have a work life of 60 days.

Yes, they are! We have previously manufactured composites by autoclave, out-of-autoclave and under press.

Conventionally on composite structures, we use non-destructive techniques, like ultrasounds to analyse the damage. We can help you find the best non-destructive techniques for your application, feel free to contact us.

Oui. Nous avons prouvé que les panneaux sandwichs en mousse peuvent être réparés en moins de 10 minutes avec CompPair. Veuillez nous contacter pour plus d'informations.

Our internal life cycle assessment demonstrates that using and repairing a CompPair composite once reduces CO₂ emissions eq. by 99.6% compared to a scenario where the part is discarded and remade (internal use case with model part, contact us for more details).

Composite parts made with HealTech^TM prepregs have demonstrated a good propensity to be recycled. We are now looking towards building strong collaborations with recycling partners and channels, as this is not our core focus. Please contact us for more information.

CompPair’s vision is to follow the 3R framework: reduce, reuse, recycle.

Through eco-designs, lower volumes of HealTech^TM prepregs can be used to produce standard part applications, thus reducing resources needs. Of course, the reuse aspect is largely applied by the regeneration of CompPair composites, with a healing capacity of up to 60 times. Finally, we aim to recycle composites at their end of life and reinputting the carbon fibres into the composites industry.

CompPair’s value chain has been thought out to fit in with our sustainable vision.

1. Production: We aim for a local-for-local strategy. We are currently producing in Switzerland and Europe, for delivery in Europe.
2. Transport: Our composites have a high shelf life; they can last for 60 days out of a freezer – meaning they can be transported in a standard way.
3. Lifetime: multiple healing cycles are possible, making the lifetime the most positive impact of our value chain.
4. End-of-life: We are working towards building strong collaborations with recycling partners and channels.

Currently, CompPair’s technology is contributing towards the following Sustainable Development Goals:

7: Affordable and Clean Energy

9: Industry, Innovation, and Infrastructure

12: Responsible Consumption and Production

13: Climate Action

As a company, we are also committed towards the other Sustainable Development Goals, for example the promotion of gender equality on the workplace (SDG 5) and other social aspects.

We can provide some support and collaboration at various levels:

• CompPair products supply
• Customisation to other reinforcements on request
• Support in repair mechanisms
• Eco-design
• Collaboration through public funding or mandates