Method for producing a rear wall of a seat back

1. A method for producing a rear wall of a seat back from at least one organosheet, comprising:

providing an organosheet comprising a thermoplastic matrix,

the organosheet having reinforcing beads on a surface of the organosheet; and

overmolding the surface of the organosheet in an injection molding die with a rib structure, such that a material-to-material connection is formed between the surface of the organosheet and the rib structure

wherein the organosheet and the rib structure are formed as a single-piece component.

2. The method as claimed in claim 1 , wherein headrest bushes, lock housings, belt deflection mechanisms, receptacles for a belt reel apparatus and/or lock receptacle regions are molded into the rib structure.

3. The method as claimed in claim 1 , wherein, during closing of the injection molding die, angled-over edges and/or brackets are shaped out on the organosheet by at least one slide.

4. The method as claimed in claim 1 , wherein the rib structure is made from a thermoplastic which forms the material-to-material connection between the organosheet and the rib structure.

5. The method as claimed in claim 1 , wherein the rib structure is applied to a front side of the organosheet and therefore the rear wall of the seat back.

6. The method as claimed in claim 1 , wherein the organosheet is performed, further comprising inserting the organosheet into the injection molding die and encapsulating the organosheet by injection molding with a thermoplastic material in order to form the rib structure.

7. The method as claimed in claim 1 , further comprising reshaping the organosheet directly in the injection molding die.

8. The method as claimed in claim 7 , wherein at least one reinforcing bead and frame-shaped bead are formed when the organosheet is reshaped.

9. The method as claimed in claim 8 , wherein a cross section of at least one of the reinforcing beads and/or the one frame-shaped bead is semicircular or partially circular.

10. The method as claimed in claim 8 , wherein the reinforcing beads are arranged and made in the organosheet in such a way that the reinforcing beads extend diagonally over the organosheet from a rear seat back bearing region to a rear seat back inner side and to a receptacle.

11. The method as claimed in claim 8 , wherein ribs are molded onto the reinforcing beads.

12. The method as claimed in claim 11 , wherein the ribs are arranged centrally on the reinforcing beads and are widened in a base region in such a way that a pedestal-like region and an enlarged contact area between the base region of the rib and the reinforcing bead are formed.

13. The method as claimed in claim 11 , wherein intersection points are formed at the contact points between rib structure ribs of the rib structure, wherein each of the intersection points includes an aperture.

14. The method as claimed in claim 1 , wherein profile elements are molded directly onto the rib structure in the injection molding die on an edge side of the rear wall of the seat back, each profile element being coupled pivotably to the rib structure by an integral hinge.

15. The method as claimed in claim 14 , wherein, the rear wall of the seat back has been removed from the injection molding die, the profile elements are pivoted, as a result of the integral hinges, in such a way that the profile elements cover the rib structure at least in regions, the rib structure and profile elements being connected in a material-to-material manner with the formation of a closed profile.

16. The method as claimed in claim 1 , wherein the organosheet is not consolidated completely during processing and/or reshaping such that a wall thickness of the organosheet is reduced or increased within predefinable ranges.