Extrusion device

1 . A device for the molding of two-dimensional (2D) or three-dimensional (3D) items, said device comprising:

at least one extruder;

a first cylinder;

a second cylinder, said at least one extruder supplying said cylinders;

a rotary barrel comprising a plurality of molds; and

a distribution plate that is fixed relative to the barrel and common to all of the molds and having

an injection point configured to supply one of the molds, and

an ejection hole configured to extract a molded item from the mold,

wherein said first and second cylinders are configured to alternately fill one of said molds of the rotary barrel via said injection point, said rotary barrel being rotated by one indexed interval when said mold is filled, said molds being closed off sealingly by the distribution plate between the position of injection and the position of extraction of the item formed.

2 . The device according to claim 1 , wherein the molds disposed between the injection point and the ejection hole and closed off by the distribution plate are cooled in a cooling area.

3 . The device according to claim 1 , wherein the molds are cooled by immersion in a bath of liquid.

4 . The device according to claim 1 , wherein the part of the distribution plate disposed in the cooling area is cooled.

5 . The device according to claim 1 , wherein the injection point is connected to said cylinders by a supply channel.

6 . The device according to claim 5 , wherein a shutter nozzle closes off the supply channel during rotation of the barrel.

7 . The device according to claim 1 , wherein the cylinders are supplied by the extruder with uninterrupted operation.

8 . The device according to claim 1 , wherein the extruder comprises at least one screw rotating constantly.

9 . The device according to claim 1 , wherein the extruder comprises at least one decompression area configured to one or more of: (i) remove moisture from the product and (ii) introduce fibers or fillers into the extruded material.

10 . The device according to claim 1 , further comprising an ejector associated with each of the molds.

11 . The device according to claim 10 , wherein the position of the ejector is used to measure the level of filling of the mold.

12 . The device according to claim 1 , further comprising a forcing system configured to increase the density of the material introduced into the extruder.

13 . The device according to claim 1 , wherein the injection pressure is lowered to approximately 100 bar after injection during rotation of the barrel relative to the distribution plate.

14 . A method for manufacturing two-dimensional (2D) or three-dimensional (3D) items, the method comprising:

supplying a first material from one or more sources in the form of flakes, a proportion of material as a function of its source being predetermined as a function of the item being manufactured;

mixing the flakes, and then introducing the mixed flakes into an extruder;

extruding the first material;

introducing the extruded material into a first injection cylinder of a pair of injection cylinders working alternately;

injecting the introduced material from a second injection cylinder of said pair of injection cylinders into a movable mold disposed in a rotary system with several molds, through an injection point passing through a distribution plate that is fixed relative to the rotary system;

closing the mold by rotating said rotary system, by the distribution plate on which said system slides;

cooling the molds of the rotary system during rotation of said system; and

extracting a molded item is extracted via an extraction point passing through the distribution plate.

15 . The method according to claim 14 , further comprising adding a second material one or more of: (i) at the inlet of the extruder, (ii) in the middle of a screw of the extruder, and (iii) at the end of the screw, after the mixed flakes are introduced into the extruder,

wherein the second material is extruded before introducing the extruded material into the first injection cylinder.

16 . The method according to claim 15 , wherein the second material comprises fibers.