As more and more people use stainless steel water cups to drink tea and coffee, in order to ensure that the taste of tea and coffee does not change, more and more ceramic painting and enamel processes are used in the processing of stainless steel. glasses with water. What is the difference between the ceramic painting process and the enamel process?
The process of applying ceramic paint is to uniformly spray ceramic paint on the inner wall of a glass of water with a spray gun and bake it stably for 20-30 minutes at a temperature of 170-180°C. Ceramic paint is a water-based paint, non-toxic and harmless. Commonly used colors are white, grey, black and red.
The process of applying enamel, also known as "enamel", consists of synthesizing various materials and depositing them inside a glass of water, and then continuously firing at 500-600°C for more than 40 minutes. After cooling, the inner wall of the water glass will appear colored, a thick layer of "icing" is applied, the texture is smooth and firm. The regular color is mostly white, as well as modulated milky white and ivory white.
The processing of ceramic paint is relatively simple and fast, and the requirements for equipment and space are not very strict. Because the ceramic paint is baked at 180 ° C, the service life of the inner wall is not as long as that of the enamel process. If it is used for a long time at any time, after the service life of the ceramic paint is exceeded, the ceramic paint on the inner wall of the glass for stainless steel water will fall off by itself. The time is about 12-18 months after use. The enamel process has strict equipment and site requirements, the processing time is long, and the processing conditions are high. This makes the cost of the enamel process higher than that of the ceramic painting process. However, due to the characteristics of the processing method, coating the inner wall of the stainless steel water cup after the enamel process will be very expensive. Durable unless faced with strong impacts, impacts, etc. Otherwise, the treated interior wall can be used for more than 10 years and even longer. In addition to the above comparison, ceramic paint spraying has paint thickness requirements that cannot be too thick, but the enamel process can make the coating thickness thicker, etc. In terms of food safety, with the development of technology, raw materials, used in these two processes has reached food quality and/or is approved worldwide.