Modificación y optimización de la composición y proceso de mezclas de impregnación de fibra de vidrio para la reducción del nivel de partículas en productos con recubrimientos de silicona


Miralles Marcos, Alba 


This project is based on the introduction of the manufacturing methodology Lean Sigma in a textile production plant focused on different types of protection of cables and/or pipes in sectors such as automotive, aerospace, industrial and railway.
This methodology is based on problem solving and is focused in increasing productivity, improving product quality and reducing manufacturing costs. To do this, a set of tools is used, which allow to reduce or eliminate all those processes or steps that do not add value to the product.
In this context, the main objective of this project is to reduce the amount of white powder found inside some of the silicone products. These are commonly used to insulate thermally and electrically some components of automobiles, so cleanliness requirements may be asked, and products may not meet them.
When cleanliness requirements are needed, the amount and size of particles that can be found inside the products are restricted, as they can affect the application inside the car. This project will pursue the improvement of some products quality responsible for the 17% decrease with respect to the total produced and with an increasing trend.
For the analysis, I have worked with quality and statistic tools such as Ishikawa, SPC or VOCT diagrams. Through these tools, several improvements have been achieved in the plant and in the amount of reduction produced.
On the other hand, because any modification in the process or materials will affect the final product, different tests have been designed to be able to see the influence of them.
Finally, thanks to the Six Sigma methodology and the proposed improvements that will be presented throughout this project, it has been possible to reduce the amount of product considered as scrap by 70%.



Gómez Gras, Giovanni 


IQS SE - Master’s Degree in Materials Science and Engineering