Abstract: The present invention relates to a plastic composite material and a process for obtaining it. Particularly, the present invention relates to a polymeric composite material comprising an epoxy vinylester resin in which a filler is disupersed, said filler being polyethylene in particulate form, wherein said polyethylene is admixed in an amount less than 55% by weight relative to the epoxy vinylester resin, and a process for obtaining the same in which the resin/styrene mixture and the polyethylene is subjected to a treatment in vacuo and placed under stirring for more than 2 hours.