Wall panel and method for manufacturing such a wall panel

A supporting wall panel comprising:

• a frame provided with a plurality of vertical battens made from wood, the vertical battens extending mainly in a vertical direction and a plurality of horizontal battens extending mainly in a horizontal direction, each vertical batten being fixed to at least two of the horizontal battens, the frame having a first thickness in a first direction perpendicular to the vertical direction and perpendicular to the horizontal direction, the frame defining a plurality of re-entrants in the form of through holes in the first direction;
• a connecting plate having a shell and studs extending from the shell, the shell and the studs being formed by a first mixture comprising a curable material in which organic plant-derived elements are embedded, the first mixture extending continuously from the shell to the studs, the connecting plate attaching all the vertical battens and all the horizontal battens to form a bracing of the frame;
• wherein the organic plant-derived elements represent at least 70% of the volume of the connecting plate;
• wherein the shell is arranged salient from the frame in the first direction and the studs protrude from the shell in the first direction to extend into the re-entrants;
• wherein the studs are in contact with lateral faces of the vertical battens and the horizontal battens;
• and
• wherein the studs define an area covered by the first mixture and an area not covered by the first mixture, the studs extending into the plurality of re-entrants by at least 20% of a depth of the plurality of re-entrant and less than 70% of the depth of the plurality of re-entrant along the first direction so that the connecting plate and the frame define a plurality of blind holes, shell, the connecting plate having a vertical compressive strength at least equal to 1 MPa.