## 1 Introduction  
One of the biggest global consumers of synthetic plastic materials is the wine industry, a fact emphasized in both the packaging and bottling process [1]. Whether through a plastic or cork stopper, the industry's plastic consumption has led to a proportional surge in waste generation [2]. In addition, the production of cork stoppers called \"cabezudos\" has been carried out, which are composed of a core of synthetic agglomerate cork fused, through a solid adhesive bond, with materials such as plastic (for example, PP), wood or even the metal alloy Zamak in its upper part [3]. Zamak is a non-ferrous metal alloy basically formed of zinc, aluminum, magnesium and copper, which, together, give rise to its name [4]. This innovative design safeguards the wine by ensuring the cork's contact while shielding the ensemble from external elements. The use of microgranulated agglomerated cork makes possible the use of very effective methods to extract 2,4,6-trichloroanisole in wine, such as the use of supercritical fluid [5, 6]. Figure 1 illustrates the production scheme of this type of \"cabezudo\" stopper of the two input flows: blue for the input flow of crowns and yellow for the input flow of cork spikes; the brown output flow corresponds to the finished and assembled product. In the production phase, the cork and crowns move in parallel, with the crowns strategically oriented for facile union. The adhesive is applied to the inner face of the crown, accommodating the insertion of the cork, and the components are pressed together to ensure proper assemblage. Finally, the finished product exits the machine, aided by a manipulator robot placing each stopper in predetermined locations or collecting them as bulk stoppers in boxes. Specialized feeders and orienters, adapted for each crown and cork variant, ensure a fluent flow in this process. Natural cork, a biomaterial with a global demand exceeding 280 kilotons annually [6], sees approximately 20-30% transformed into CoP, used for various industrial purposes, such as fillers for stoppers [7]. Previous studies [8; 9; 10] have successfully explored the manufacture of compounds by mixing this material with polymeric matrices like PE or PP. [PERSON] et al., 2019 [11; 12] concluded that CoP's dispersion in a PP matrix achieves better results with smoother and more easily processable surfaces than with HDPE. From the point of view of composite construction, CoP stands as the fundamental load-bearing component of the composite, while the polymer matrix acts as the binder, linking and filling cells to distribute external loads efficiently. Moreover, some studies, such as [13], highlight agglomerated cork's amphiphilic properties, enabling easy blending with polymeric elements such as latex, polyethylene or polyurethane for wine stopper production. During the production of agglomerated cork spikes (sticks) currently used to form wine bottle stoppers, significant volumes of cork powder (CoP) emerge from cutting and sanding operations, free of impurities, making them highly desirable for utilization [14]. This material generates cork powder from the original raw material at a proportion of 20-30%, a fact corroborated in references such as [15; 16; 17]. Given this significant volume and periodicity, opportunities arise for circular economy models where this resource could produce composites in tandem with thermoplastics frequently used in the packaging industry [18; 19; 20]. Traditionally, this material was converted into pellets for energy through combustion due to its limited commercial value [9]. However, it can be valuable for alternative uses within a circular economy scenario in the geographical area where commercial activities are generated [21]. This study specifically details the procedure for obtaining an innovative agrocomposite material derived from the combination of conventional CoP and PP, a semi-crystalline polymer widely used due to its easy handling, chemical resistance, low density and relatively affordable cost [22].