Glass or glass-ceramic composite material and method for producing same
A method for producing a glass or glass ceramic composite material with a metallic decorative appearance is provided. The method includes: applying a layer onto a glass or glass ceramic substrate, the layer comprising a sol-gel and/or a polysiloxane; patterning the layer; and applying a metallic-looking layer onto the patterned layer.
1. A method for producing a glass or glass ceramic composite material with a metallic decorative appearance, comprising the steps of:
applying a layer onto a glass or glass ceramic substrate, the layer comprising a photoinitiator and at least one of a sol-gel and a polysiloxane;
patterning the layer using an embossing stamp or roller, wherein the layer is precured with ultraviolet radiation during the patterning using the embossing stamp or roller; and
applying a metallic-looking layer onto the patterned layer.
2. The method as claimed in claim 1 , wherein applying the metallic-looking layer comprises depositing a decorative layer using a process selected from the group consisting of a liquid phase coating, PVD process, and a CVD process.
3. The method as claimed in claim 1 , wherein the layer comprises a sol-gel.
4. The method as claimed in claim 3 , further comprising adding nanoparticles to the sol of the sol-gel.
5. The method as claimed in claim 4 , further comprising adding the nanoparticles at a volume fraction of particles to the sol from 0.1 to 0.9.
6. The method as claimed in claim 5 , wherein the volume fraction is from 0.5 to 0.8.
7. The method as claimed in claim 3 , further comprising thermally curing the sol-gel layer between 50° C. and 1000° C.
8. The method as claimed in claim 3 , further comprising thermally curing the sol-gel layer 450° C. and 740° C.
9. The method as claimed in claim 1 , wherein the embossing stamp or roller has a pattern similar to a brushed metal surface.
10. The method as claimed in claim 3 , further comprising screen printing the layer onto the substrate.
11. The method as claimed in claim 10 , further comprising excluding at least one area of the substrate from being printed with the layer.
12. The method as claimed in claim 1 , wherein the layer has a refractive index that differs from a refractive index of the substrate by less than 0.3.
13. The method as claimed in claim 1 , further comprising applying the metallic-looking layer onto the layer in areas where the layer was not patterned.