You are here

Corso Magenta re-invents paint

News International-French

12 Feb 2020

The 10 years old startup develops environmentally friendly and efficient ways of applying paint. The concept is simple, they apply the paint dry. For their first participation to the JEC Innovation Awards in the category “Process” with partners GeM (Nantes University) and Multiplast, they will defend their concept at JEC World 2020 final.

Corso Magenta re-invent paint

Can you briefly explain your Functional paint films for composite manufacturing innovation?
In mold application of dry paint film, primer or topcoat, leading to a drastic reduction of cycle time, lower environmental impact, and new functionalization opportunities. Painting is nowadays one of the most time consuming and HSE concerned process in the composite manufacturing industry. Firstly, the surface finishing with liquid paints generates a huge amount of waste and is highly detrimental for the health of workers, especially when using chromates and solvent based chemistries. And in a second hand, the surface preparation and drying times are a real bottleneck while the production rates need to be improved every day.

Corso Magenta is re-inventing paint by developing a new green generation of functional films. Their patented process is able to transform liquid paints into dry films with controlled parameters. It is compatible with any paint without modification of the original formula: epoxy primers, polyurethane topcoats, clear coats... The use of already qualified paints or proprietary formulations ensures the durability, aesthetics and global performance of the system. And the film is fully dried in the industrial line and its application generates no VOCs and waste.

Dry paint films can be self-supported or complexed with additional layers, maximizing functionalization opportunities:

  • Glass, carbon, aramid, PEEK or other fibers can be semi impregnated in the paint. Combining the paint-resin chemical adhesion to the mechanical bounding of fibers reinforces interfacial strength with the resin matrix.
  • Bronze mesh to provide integrated lightning strike protection,
  • Protective film or peel ply to facilitate demolding and ensure adequate surface roughness.
  • Resistive layer to generate heating as close as possible to the external surface.
  • Electromagnetic shiedling layer, for RF applications.

What is the value created by the use of composite materials in your innovation?
The conventional way of painting requires lengthy surface preparation, and dedicated painting areas to ensure no pollution of the product surface, respect of worker’s health, and environment protection. Using dry films of paint has proven its efficiency in different industries to improve the above described limitations, and incorporate innovative functions to surfaces. In aeronautics with aircraft paint repairs, or the retail industry with fast RFID shiedling implementation. In these cases, the surface-paint bounding is ensured by an adhesive, which can be avoided when incorporating films in the composite manufacturing process.

The main value brought by composite manufacturing when using films of dry paint, is the removal of any adhesive to bind the paint to the component’s surface. When placed as a first layer in a mold, the excess resin of the prepreg or infusion ensures the adhesion of paint to the composite.

What are the key benefits of your innovation?

  • Paint layer functionalization
  • Precise paint thickness control
  • Reduce cycle-time in composite manufacturing
  • Eliminate worker exposure to VOC
  • Reduces painting’s environmental impact

How does your innovation contribute to the common good?

Energy saving: Using in mold dry paint films instead of liquid paint eliminates all the energy expenses for surface preparation, cleaning and drying of the coating. Embedded functionalities can also contribute to reduce the energy consumption: micro-texturization against bio fouling of ship hulls or to improve aerodynamism, easy to clean surface, or deicing paint that delivers heat close to the surface.

Durability: Composite parts durability is impacted by the external coating quality, which is closely linked to its thickness. However, ensuring a homogeneous and on target thickness over large parts has proven difficult for two reasons: First, painting is often a manual process, and thickness discrepancies increase with the number of layers applied. Second, controlling a paint thickness with Non Destructive Test on composite is hugely difficult. Corso Magenta process ensures paint thickness can comply with much tighter tolerances. What is more, thickness of paint films can easily be controlled during production, with a thickness tolerance below 25um.

Ease of use: Films of dry paint are handled in a similar way to layers of prepreg or dry fabric, and can be cut to fit the component shape. It does not require specific protection for worker or specific machinery.

Health & safety: The traditional way of painting composite material requires surface preparation, through multiple sanding and filler / primer application before final painting. In mold application of dry paint greatly reduces worker exposure to sanding induced dust and VOC emission linked to pulverization of liquid primer and paints.

The Corso Magenta team will present their Functional paint films for composite manufacturing to the composite community in hall 6, booth N4 during the JEC World exhibition.