Method and device for producing a mold

1. A method for producing a molded part, comprising:

inserting a fiber-reinforced mat between a first pressing surface of a first tool component and a second pressing surface of a second tool component that are in an opened state, wherein:

the mat extends in a first direction substantially parallel to the first and second pressing surfaces;

the first tool component has a first cavity having an extending section that extends the first cavity in the first direction;

the second tool component has a second cavity and a nozzle configured to supply a liquefied synthetic material; and

the extending section is configured to allow the liquefied synthetic material to flow substantially parallel to the mat in the first direction and to extend the first cavity towards the second cavity, such that only the extending section overlaps a portion of the second cavity, in a cross-section perpendicular to the mat, in an overlapping area;

closing the first and second tool components so that the mat is pressurized and molded to produce a fiber-reinforced support; and

introducing the liquefied synthetic material through the nozzle into the mat, such that:

the liquefied synthetic material penetrates the mat a first time to fill the first cavity, including the extending section; and

the liquefied synthetic material penetrates the mat a second time, in the overlapping area, to fill the second cavity after the first cavity, including the extending section, is filled.

2. The method according to claim 1 , wherein introducing the liquefied synthetic material is performed immediately after the first and second tool components has been closed.

3. The method according to claim 1 , further comprising:

preheating the mat to a temperature between about 100° C. and about 300° C.

4. The method according to claim 1 , wherein:

the mat includes a thermoplastic matrix, and

introducing the liquefied synthetic material includes introducing the liquefied synthetic material while the thermoplastic matrix is plasticized.

5. The method according to claim 1 , wherein introducing the liquefied synthetic material includes introducing the liquefied synthetic material at a pressure of about 30,000 kPa to about 50,000 kPA.

6. The method according to claim 1 , wherein introducing the liquefied synthetic material includes introducing a liquefied polymer.

7. The method according to claim 6 , wherein introducing the liquefied polymer includes introducing at least one of PP, ABS, PC/ABS, or PA.

8. The method according to claim 6 , wherein introducing the liquefied polymer includes introducing a liquefied polymer having at least one of a filler or a reinforcing substance.

9. The method according to claim 8 , wherein introducing a liquefied polymer having the reinforcing substance includes introducing a liquefied polymer having PP T20.

10. The method according to claim 1 , wherein inserting the mat includes inserting a thermal or duroplastic fiber system with at least one of natural fibers, glass fibers, mineral fibers, synthetic fibers, cellulose fibers, or carbon fibers.

11. The method according to claim 1 , wherein inserting the mat includes inserting a fiber-reinforced mat having a thickness of about 8 to about 15 mm.

12. The method according to claim 1 , wherein closing the first and second tool components to produce the fiber-reinforced support includes producing a fiber-reinforced support having a thickness of about 1 to about 3 mm.