Nowadays, the application of injection molded parts is quite extensive. There are many kinds of colorful injection molded parts in the market, and the colors are different. Then how do the injection molding parts are colored? Here we will briefly introduce the three common coloring methods for injection molding processing. hope that it can help us.
1. Compound coloring method is the most accurate process for coloring injection molded parts. It can produce accurate, highly repeatable and shaded colors. It is most suitable for small batch production. Most commercial plastics are colored on injection molding machines. Most engineering plastics have been colored when they are sold.
2, injection molding processing color masterbatch coloring method of two kinds of granular materials and liquid materials, can be assigned to a variety of colors. Of which the most common pellets, color masterbatch can be used by mixing plastic and masterbatch , The mixture or masterbatch is actually transported into the injection molding machine. The advantages are: cheaper colors, lower dust problems, lower raw material costs, and more convenient storage.
3, injection molding dry powder coloring method is the cheapest, the drawback is the use of dust and dirty. To ensure that the production process is uniform and accurate color, you can use a specific size of bags or cartons to install the correct amount of dry Toner. When coloring with dry toner, the surface of the plastic pellets must be covered with a uniform layer of colorant so that the color can be evenly dispersed in the melt. There must be standards for the method and timing of compounding to ensure uniform coloration. .
After the coloring step is determined, it must be persevered. In addition, it is also necessary to prevent the toner from absorbing moisture during storage.