Process for producing coated molded bodies

1. A process for producing a coated moulding, the process comprising: injection moulding a moulding material into an injection mould, to obtain a moulding; and then

performing an expansion-flooding-embossing process in the same injection mould, to obtain a coated moulding, the coating comprising a multifunctional structured surface alongside a high-gloss surface.

2. The process of claim 1 , wherein the multifunctional structured surface is nanostructured and the high-gloss surface is multifunctional.

3. The process of claim 1 , the process comprises:

(I) injecting the moulding material at a temperature between 220 and 330° C. into the injection mould, which comprises a fully or partly structured inner surface, and cooling the moulding material to a demoulding temperature, to obtain the moulding;

(II) modifying the injection mould, to form an intermediate space in the injection mould having a thickness between 2μm and 500μm between a surface of the moulding to be coated and an inner surface of the injection mould;

(III) liquid injecting a reactive mixture into the intermediate space, thereby filling the intermediate space, at least partially, with the reactive mixture;

(IV) closing the injection mould heating the injection mould to a temperature between 80 and 140° C. for not more than 20 seconds, to obtain a coated mould; and then,

(V) cooling and opening the injection mould, and removing the coated moulding from the injection mould.

4. The process of claim 3 , wherein, within 5 to 8seconds after closing the mould in (IV), the injection mould is heated to the temperature between 100 and 140° C.

5. The process of claim 3 , wherein, before the liquid injection (III), the injection mould is modified by replacing a cavity of the injection mould with a different cavity.

6. The process of claim 5 , the modifying is carried out with a sliding table.

7. The process of claim 3 , wherein the intermediate space has a thickness between 5μm and 80μm.

8. The process of claim 7 , wherein the reactive mixture comprises:

at least 40% by weight of a di(meth)acrylate;

at least 10% by weight of a tri-, tetra-, or penta(meth)acrylate; and

0.01 to 3.0% by weight of a thermal initiator.

9. The process of claim 8 , wherein the reactive mixture does not comprise at least one selected from the group coating of a lubricant and a mould release agent.

10. The process of claim 3 , the moulding material comprises at least 50% by weight of polymethyl methacrylate, a polymethacrylmethylimide, a polymethyl methacrylate copolymer, or any combination thereof.

11. The process of claim 3 , wherein the reactive mixture has a dynamic viscosity in a range from 1 to 200 mPa*s at 25° C.

12. The process of claim 11 , wherein a maximum heating power which a surface of the injection mould facing the moulding is heated is attained before or during the liquid injecting (III).

13. The process of claim 3 , wherein a maximum heating power by which the surface of the injection mould facing the moulding is heated is within a period which begins at a time of a minimum temperature of the moulding and ends less than 1 second after the liquid injecting (III).

14. The process of claim 3 , wherein, during (I), the moulding is cooled to a temperature between 70 to 90° C.