In the spraying process of stainless steel water cup, why is white the most difficult to spray?

In the spraying process of stainless steel water cups, many customers mistakenly think that white is the best spray. It is believed that white does not need to be toned, and it is best to control in spraying, and the color expression is relatively high. This is a misunderstanding, in fact the opposite is true. In the spraying process of stainless steel water cups, whether it is spray paint or powder spray, white is the most difficult to control.

First of all, in the spraying of stainless steel water cups, whether it is paint or plastic powder, white is the most difficult to prepare. White is not darker like black and some lighter ones do not affect the display of colors. There is no fixed standard for white. In the absence of contrast, everyone will think that white is white, but once you compare, you will find that each white is different. Some are grayish, some yellowish, some are blueish, and white is the cleanest contrast color, so it is difficult to control the chromaticity of white in the modulation.

Secondly, in the spraying process, the shape of the product matches the spraying process. Some water cups use multiple sprays in order to make the whole body of the cup completely evenly sprayed. No matter how many sprays, the black color is not obvious, and white is not good. If the spraying part evenly reveals the base color of the stainless steel water cup body, the white will turn blue and gray, but after spraying more evenly, the white will become yellowish.

After spraying, the stainless steel water cup will be baked at high temperature in order to make the surface sprayed material firm. White is also the most difficult to control in terms of temperature sensitivity. The white coating may fall off if the temperature is not enough, and the white coating will turn gray and black if the temperature is too high.

Now many factories have added laser laser engraving on the surface of the water cup, and the white coating is also the most difficult to engrave. Generally, in order to make the spraying effect on the surface of the water cup even and meticulous, the white coating will be sprayed several times during processing, so that the effect will be more ideal. However, because the white coating is sprayed several times, the surface coating will be too thick. The laser engraving machine uses ultraviolet rays for high-temperature burning, and the perception of white is not as good as other colors. If the white coating is too thick, uneven laser engraving of the pattern will appear, and some laser engraving is thorough, and some still have a white coating. These objective problems have greatly increased the difficulty of processing the white-coated water cup.

Dongguan Zhanyi Commodity Technology Co., Ltd. accepts the processing and production of various plastic water cups and kettles. The company has 4 complete plastic water cup production lines, including mold department, injection molding department, blow molding department, spraying department and printing department.

At present, we have produced more than 100 kinds of different plastic water cups, including plastic juice cups, plastic children's water cups, plastic milk tea cups, plastic coffee cups and so on. Global buyers are welcome to visit our official website, and we will have professional customer service staff to provide you with services online.