Views: 371 Author: Site Editor Publish Time: 2022-06-10 Origin: Site
With the development of the plastics processing industry, especially the establishment of many joint ventures and the increase of coloring requirements for export products, master batch gradually occupies the dominant position in the field of industrial color processing. As a new type of polymer coloring material, master batch has a wide range of applications. You can see the application of professional master batches in industrial manufacturing fields such as garment production, daily use plastics, and automotive parts.
Masterbatches first appeared in the mid-1960s. It was developed by a talented chemist at the time as a coloring product for plastics and fibers. Its main principle is to polymerize pigments in extraordinary amounts in a resin to form a unique compound. According to the statistics of global color processing industry, in recent years, the average annual growth rate of color masterbatch demand in the world has been maintained at about 7%-9%. The average annual growth rate of color masterbatch demand in China is about 20%. It is expected that the demand for colorful master batch will continue to grow in the coming years.
Due to the increase in demand, specialized masterbatch plants are emerging in various countries around the world. In China alone, there are more than 300 plastic grade masterbatch factories. To increase the competitiveness of their products and attract more customers, masterbatch manufacturers are constantly improving their production technology. Professional masterbatch companies use three main masterbatch production technologies: injection molding, blow molding and extrusion.
Injection molding is the most common technique used in the manufacture of plastics and masterbatches. Plastic injection molding is ideally suited for high-volume, high-quality objects because it can produce products with very flexible and almost unlimited uses. You simply heat the raw masterbatch materials until they are all converted into a liquid mixture. The mixture is then passed through a horizontal syringe and impinged into a mold. Once cooled to temperature, the manufacturer removes the mold and you have a final, high-quality masterbatch product. Injection molding technology is so sophisticated that you don't need to spend too much money. This huge advantage offers a very compatible price for the final product.
Extrusion molding is very similar to injection molding, except that it does not have a die attached to the syringe. As a result, its range of common products is much narrower than other methods. Extrusion molding is best suited for producing PVC hoses and long strips of PVC masterbatches. However, it can still achieve high annual production rates due to the low cost of production molding systems and equipment.
Blow molding, also known as gas-assisted or gas injection molding, is one of the most popular methods of masterbatch manufacturing. This method requires that plastic, liquid masterbatch, additives, and other materials are first added to a funnel for high-temperature heating and melting. The molten plastic is then formed into a fixed shape using high-pressure air or gas. Due to its wide range of applications and different industries with flexible products, the annual production of this masterbatch manufacturing technology is quite high compared to other technologies. However, the cost of the molds for this method is quite high due to an additional processing procedure.