Andaltec has a huge knowledge about the application and use of diffusive materials with prototype techniques. We know how to transform the light produced by LEDs into a continuous and uniform lit surface.

The main application for diffusive materials in automotive is its use in headlamps, rearlamps and interior lighting. Diffusive materials allow automotive makers high flexibility in tends of colour, intensity, thermal performances and design. LED lighting has generated a great increase in applications which light a surface or an object with homogeneity in light distribution and intensity. At the same time, when the device emitting the lighting is observed, this should also present a distinctive and eye-catching look.

There are two types of “light diffusion techniques”, these are refraction and particle diffusion. For refraction it is used a diffuse surface produced by surface microstructuring. In case of particles diffusion, the particles are distributed homogeneously in bulk inside the material. Particle diffusion is mainly used for signalling applications, due to the fact that the material in suspension reduces transmittance a lot because of retro reflection and light absorption due to particles in suspension. It is usual to find both light diffusion techniques when manufacturing lighting devices in high-volume series. The first one is achieved by replicating the microstructuring on the mold from which the diffusion part comes. The second technique is achieved in the manufacturing of the raw material chipping with which the part is made. Thus, in any of these cases, no additional filters or parts are required in order to attain the desired effect.

The Prototype department in Andaltec has mainly focused on diffusive materials, this is particle diffusion. We have been able to achieve validation of both optical functions and the desired effect. We have arrived to this solution by the use of Polyurethane resins designed specifically by Andaltec. They achieve transmittance values very similar to those of the materials validated for thermoplastic injection, such as Plexiglas Satinice 8N, in its several degrees DF23 and DF21 or some Makrolon, series 2407. These resins allow for part production using alternative methods to mold injection. So, it is a very competitive and cheap solution because it doesn’t need the construction of an injection mold. In this way, diffusive prototype parts can be achieving much faster than with metallic molds.

Andaltec is nowadays highly worldwide positioned in this point due to the capability to carry out these breakthrough prototyping techniques. The high quality of the results and trust of our customers endorse us. Hence, there is no need in any case for the manufacturing of the definitive mold, not even for soft materials like aluminium molds.