1. What is the injection molding injection molding is a method of manufacture of plastic products, plastic injection by the pressure in the molten state into plastic molds, cooled and formed into the desired variety of plastic parts, the use of professional injection molding machinery, such as injection molding machine to subsequent production. 2, high injection molding mold injection mold manufacturing difficulty of design requirements, mainly the mold runner design accurate, if the design work is not done, done, then in subsequent unsuccessful tryout proofing, modify mold is very difficult thing, most need the new manufacturing mold. 3, mold manufacturing cycle of songs to be based on a sample may be sometimes looks a very simple structure of plastic, but it needs two sets of plastic injection molds, injection molds can be processed even three complete. Finally, the price is calculated injection mold plastic mold even on the yuan, and it is this highly contrast to the customer cause great psychological impact. 4, injection mold manufacturing processes are more expensive to purchase standard parts 5, injection mold manufacturing takes longer double injection molded tread pattern principle is shown in double injection molding schematic. It also has two cylinder 1 and 5, the nozzle structure is somewhat special, in addition to its usual function of the nozzle, but also by a gear mounted on the rear of the three rotated. When molding plasticizing cylinder 1,5 respectively different colors melt plastic mold design, and gear driven rotary axis 3 4 rotation, so that the different colors alternately melt into the mold cavity plastic mold steel, resulting from the center to the edges radiation in the form of different colors and patterns of plastic products. Note color injection molding due to two-color injection molding is composed of two barrel molding mixed together, so that both the barrel from the melt must have good bond strength, in order to ensure a better bonding strength should try to use different colors of the same kind of plastic. If using a different color varieties of plastics injection molding, you must combine performance tests carried out to confirm the order after production combined with qualified, otherwise, the bond strength of two bad plastic mix, easy to make plastic parts, cracks and other defects. Plastic mold tooling _ Shun King (certified) _ Dongguan Plastic Co. provided by Liaobu Shun King mold. Liaobu Shun King Mold Ltd. (www.shunjingmuju.com/) is an industry leader in Dongguan, Guangdong, mold equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shun King dies in leadership with the staff warmly welcome all inquiries negotiations to create Shun King mold a better future.