COMPONENT, IN PARTICULAR A TOP PLATE AND/OR A BURNER CAP OF A GAS HOB HAVING A NON-STICK AND/OR NON-WETTING COATING, GAS HOB COMPRISING SUCH A COMPONENT AND METHOD FOR MANUFACTURING A COMPONENT

摘要

The present invention relates to component, in particular a top plate (2) for a gas hob (1) and/or a burner cap (6a, 6b) of a gas burner (5a, 5b) for a gas hob (1), having a non-stick and/or non-wetting coating (12) obtainable by a process characterised by the following steps, a) providing a component, in particular a top plate (2) and/or a burner cap (6a, 6b), having an upper surface (7a) and a bottom surface (11b), b) preferably, pretreating of at least the upper surface of the component, in particular the top plate or the burner cap, for providing a surface having a roughness being suitable for applying a non-stick and/or non-wetting coating, by mechanical treatment, physical treatment or chemical treatment, in particular by sand-blasting and/or laser treatment and/or a surface activation treatment, particularly a plasma treatment, and/or an enamelling process to form a ground layer (13), thus applying an enamel layer onto the upper surface of the component, in particular the top plate or the burner cap, c) applying the non-stick and/or non-wetting coating (12) to the upper surface (11a) of the component, in particular a top plate (2) and/or a burner cap (6a, 6b), or the surface (14a) of the ground layer (13), wherein the non-stick and/or non-wetting coating (12) comprises at least one layer (17) that is obtained by a sol-gel process from a first composition comprising a silica sol and a silane. The invention further relates to a cooking appliance (1), in particular a gas hob comprising such a component, in particular a top plate (2) and/or a burner cap (6a, 6b), and a method for manufacturing such a component, in particular a top plate (2) and/or a burner cap (6a, 6b).