Three coloring methods for injection molded parts processing

Below we will briefly introduce the three commonly used coloring methods for injection molding, hoping to be helpful to everyone.

1. The compound pigment coloring method is the most accurate coloring technology for the processing of injection molded parts.

It can produce accurate, repeatable and appropriate shades of color, which is most suitable for small batch production. Most commercial plastics are colored on injection molding machines, while most engineering plastics are already colored when they are sold.

2. The coloring method of injection molding parts processing color masterbatch is divided into two kinds of granular material and liquid material, which can be adjusted into a variety of colors.

Among them, pellets are the most common. The color masterbatch can be used by mixing the plastic with the color masterbatch, and the mixture or the color masterbatch can be actually transported into the injection molding machine. Its advantages are: cheaper colors, reduced dust problems, lower raw material costs, and more convenient storage.

3. The dry toner coloring method for injection molding is the cheapest, and its disadvantage is that it is dusty and dirty when used.

To ensure the uniformity and accuracy of the color during the production process, a specific size bag or carton can be used to fill the correct amount of dry toner. When using dry toner for coloring, the surface of the plastic particles must be covered with a uniform layer of colorant so that the color can be evenly dispersed in the melt. The mixing method and time must be standardized to ensure uniform coloring.

After the coloring step is determined, it must be persevering. In addition, it is also necessary to prevent the toner from absorbing moisture during storage, otherwise it is easy to abrupt and cause markings on the molded parts.