Baking tray or baking grid having a non-stick and/or non-wetting coating, cooking appliance comprising such a baking tray or baking grid and method for manufacturing a baking tray or baking grid

A coated baking tray or baking grid having a non-stick and/or non-wetting coating produced by a process comprising the following steps:

• a) providing a baking tray or baking grid ha an upper surface and a lower surface,
• b) pretreating the surface upper surface and/or the lower surface of the baking tray or baking grid to yield a treated baking tray or baking grid having a surface with a surface roughness suitable for applying a non-stick and/or non-wetting coating, the baking tray or baking grid being pretreated by mechanical treatment, physical treatment, or chemical treatment,
• c) applying the non-stick and/or non-wetting coating to the surface of the pretreated baking tray or baking grid, wherein the non-stick and/or non-wetting coating comprises at least one layer that is obtained by a sol-gel process from a first composition comprising a silica sol and a silane,
• wherein the surface of the pretreated baking tray or baking grid has a surface roughness between Ra 0.01 μm to 10.00 μm.

A coated baking tray or baking grid having a non-stick and/or non-wetting coating produced by a process comprising the following steps:

• a) providing a baking tray or baking grid having an upper surface and a lower surface,
• b) pretreating the surface upper surface and/or the lower surface of the baking tray or baking grid to yield a pretreated baking tray or baking grid having a surface with a surface roughness suitable for applying a non-stick and/or non-wetting coating, the baking tray or baking grid being pretreated by mechanical treatment, physical treatment, or chemical treatment,
• c) applying the non-stick and/or non-wetting coating to the surface of the pretreated baking tray or baking grid, wherein the non-stick and/or non-wetting coating comprises at least one layer that is obtained by a sol-gel process from a first composition comprising a silica sol and a silane,
• wherein the silane is an organoalkoxysilane and/or a fluoralkoxysilane.

A coated baking tray or baking grid having a non-stick and/or non-wetting coating produced by a process comprising the following steps:

• a) providing a baking tray or baking grid having an upper surface and a lower surface,
• b) pretreating the surface upper surface and/or the lower surface of the baking tray or baking grid to yield pretreated baking tray or baking grid having a surface with a surface roughness suitable for applying a non-stick and/or non-wetting coating, the baking tray or baking grid being pretreated by mechanical treatment, physical treatment, or chemical treatment,
• c) applying the non-stick and/or non-wetting coating to the surface of the pretreated baking tray or baking grid, wherein the non-stick and/or non-wetting coating comprises at least one layer that is obtained by sol-gel process from a first composition comprising a silica sol and a silane,
• wherein the first composition comprises a siloxane.