COMPOSITE MATERIAL FOR USE IN STEREOLITHOGRAPHY AND PRODUCTION METHOD
WO22136717
The composite material of the invention is based on a photocurable resin with cork as an additive, the composition of the material being usable in stereolithography-based 3D printing. The main feature of the invention is that, by using finely fragmented cork powder as an additive to the photocurable polymer matrix, the matrix does not lose its ability to be photocured and processed using said technique. The method comprises: grinding cork; sieving same by sizes; mixing in different percentages with the photocurable polymer matrix; and processing same using stereolithography. The method allows cork powder, traditionally considered a waste product of little use in the cork industry, to be used as technological material for stereolithography-based 3D printing, taking advantage of the properties of cork in the design of new composite materials for additive production.

This procedure is scalable at an industrial level, and can be carried out on small and large format 3D photopolymerization 3D printers. Commercialisation of end-products would be another economic activity potentially attractive arisen as a consequence of the invention.
P202031289 - PCT/ES/2021/070919



.jpg)