APPLICATION DEVICE, REMOVAL DEVICE, APPLICATION AND REMOVAL SYSTEM AS WELL AS APPLICATION METHOD, REMOVAL METHOD, AND APPLICATION AND REMOVAL METHOD

The present invention is an application device (10) for applying a hot melt coating material (A) only on the non-treated surfaces (S2) of a coating object, which comprises treated surfaces (S1) where surface treatment is to be performed and non-treated surfaces (S2) where surface treatment is not to be performed, the device comprising: an inkjet unit (20) for discharging melted coating material (A) toward the coating object; a supply unit (30) for supplying the melted coating material (A) to the inkjet unit (20); and a heating means (31) for melting the coating material (A), the heating means being provided on the supply unit (30). Another invention removes coating material (A), which is a paraffin-containing masking agent and has been coated only on the non-treated surfaces (S2) of the coating object, still in solid form from the coating object using a refrigerant of a temperature less than the melting point of paraffin or in liquid form from the coating object using a fluid of a temperature at or above the melting point of paraffin. Said various configurations allow the formation of masking on small, complex non-treated surfaces as well as easy removal of the masking agent.