The chemical properties of plastic surfaces can be improved by using a burner to generate flames, thereby enhancing the adhesion of ink, glue or paint to the plastic. This method is particularly important in the pre-treatment stage before painting. Additionally, the burner can provide precise temperature control to ensure the effectiveness and safety of the flame treatment process, as excessively high or low temperatures may affect the treatment effect or damage the plastic parts. The main advantages of this method include efficiency, high quality, and controllability. It can provide a continuous and stable flame, which can quickly and effectively improve the adhesion of plastic surfaces. At the same time, the flame it provides can evenly treat the plastic surface, thereby improving the quality of subsequent painting or bonding. Modern industrial burners are equipped with automatic control systems that can precisely adjust the temperature and shape of the flame to meet different treatment needs.