Plasma-Activated Interface Layer for Non-Stick Coating Adhesion

The patent introduces a plasma-activated interface layer as an intermediary between the metallic substrate and the fluorocarbon resin coating. This interface layer acts as a mediator that chemically bonds to both the metal substrate and the resin, enabling the anchoring of thick coatings (2-50 μm) without delamination. The plasma treatment creates a chemically activated surface that forms strong interfacial bonds, resolving the adhesion problem while maintaining coating thickness for long-term durability.

The patent replaces chemical surface treatment methods with a plasma surface treatment process. Instead of using chemical baths to activate the substrate surface, the invention uses plasma (ionized gas) to create a chemically activated interface layer. This substitution eliminates the need for polluting chemical baths while achieving equivalent or superior adhesion results through physical-chemical plasma activation of the substrate surface.

The patent replaces mechanical surface treatment methods (brushing, sandblasting) with plasma surface treatment. The plasma process activates the substrate surface chemically without mechanical contact, thereby avoiding surface deformation. This allows the coating to be applied directly to the final surface geometry without requiring subsequent shaping operations to restore the original surface form.

The patent substitutes mechanical surface treatment methods that generate waste materials (sandblasting medium, worn brushes) with a plasma treatment process. Plasma is an energy field rather than a material consumable, so it does not generate solid waste that requires regeneration or landfilling. The process activates the substrate surface through ionized gas interaction, eliminating the pollution problem associated with mechanical treatment waste disposal.