This thesis presents the validation of Dip Coating, a new project developed within EssilorLuxottica and experimentally integrated into the industrial production flow with the objective of reducing rework costs and improving the final quality of eyeglass components. The work was conducted during an internship within the Manufacturing Engineering (ME) team at the Lauriano plant and focused on evaluating the effectiveness of applying a temporary protective film on the external surfaces of eyeglass temples. The protective film is intended to prevent scratches, abrasions, and handling-related defects during downstream processes, ultimately improving end-of-line performance. The study was structured into multiple iterative phases. The initial phase concentrated on the integration of the Dip Coating project within the existing production flow and on the identification of issues related to the prototype machine, process stability, and operator interaction.