Plastic coloring can be colored with toner, and the characteristics of toner coloring are the method of directly using toner (pigment or dye) to add an appropriate amount of powdery additives to color plastic particles, which has the advantages of low cost and small batch operation. But its biggest disadvantage is that the pigments will fly in the process of transportation, storage, weighing, and mixing, causing pollution and seriously affecting the working environment. There is also toner coloring. Another headache for users is that the hopper of the extruder is not easy to clean. The coloring of masterbatch overcomes all the disadvantages of toner coloring, so masterbatch coloring is the most commonly used plastic coloring method today. Color masterbatch is a new product for coloring plastics and fibers developed in the 1960s. The masterbatch is mainly composed of three parts: colorant, carrier and dispersant. It is a polymer compound prepared by uniformly loading an ultra-constant amount of pigment in a resin.

However, the current domestic masterbatch products have a single structure and incomplete varieties. General-purpose products account for a large proportion. For example, when coloring is required, a single masterbatch is used for coloring. When antistatic performance is required, a single antistatic masterbatch is added to impart antistatic performance. For aging resistance, add a single heat stabilizer masterbatch, light stabilizer masterbatch, and antioxidant masterbatch to stabilize the system. The method of adding a single masterbatch makes it necessary to use a large amount of carrier resin when the comprehensive performance of the polypropylene resin is relatively high, and this leads to high consumption of antioxidants in the processing process, and more components for downstream molding processing. Disadvantages such as complicated process. In the future, the color masterbatch will develop in the direction of multi-function, high color content and high technology content. The development of color masterbatch is accompanied by the improvement of production technology. Polyamide (PA) is a widely used engineering plastic resin. It has won people’s attention due to its unique low specific gravity, high tensile strength, wear resistance, good self-lubrication, excellent impact toughness, and both rigid and flexible properties. In addition, it has simple processing, high efficiency, light specific gravity, and can be processed into various types. A variety of products to replace metal, are widely used in automobiles and transportation industries. However, it has the problem of poor acid resistance and not too much contact with acidic substances. At the same time, with the improvement of people’s living standards, people are increasingly pursuing the comfort of their living environment and paying more and more attention to sanitation management. Therefore, the antibacterial properties of plastic products play an important role in creating a clean and healthy environment, and improving the living environment of human beings. The incidence of diseases, the protection of the health of the whole people, and the higher antibacterial requirements for plastics used in direct contact with the human body. To this end, we start with the product formulation and provide an antibacterial and acid resistant PA masterbatch.