Two-color injection molding, shaping how? The so-called two-color injection molding, refers to two different colors of the same mold plastic injection molding method. It makes plastic parts appear two different colors, and make plastic parts presents a regular or irregular pattern moire-like color, plastic parts to improve the practicality and aesthetics. (1) shown in FIG. 1 double dither injection molding injection molding dual color mixing principle. It has two barrel, structure and use of each cylinder are the same as ordinary injection molding barrel. Each cylinder has its own communication channels and nozzles, nozzle pathway is also equipped with four valves open and close. Molding, the melt is plasticized in the barrel after a good color injection molding manufacturers, and the proportion of material discharged from the opening and closing valves 2,4 control melt into the nozzle of the order, and then by the injection nozzle into the mold cavity. You can get all kinds of different plastic products blending effect. Figure 1: Two-color mixing principle injection molding nozzle 2- 1- 3- feed Jane 4- closing valve closing valve 5- cylinder (2) double injection molding pattern 2 is shown in the schematic diagram double injection molding pattern. 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, the barrel 1,5 respectively different colors plasticized melt color injection molding, and the gear 3 to drive the rotating shaft 4 is rotated so that the different colors of alternating melt into the mold cavity, thereby obtaining a different form of radiation from the center to the surrounding of colors and patterns plastic products. Figure 2: Principle 1 Huan pattern molding a nozzle barrel 2- 3- 5- gear 4 a barrel rotary axis (3) Caution color injection molding injection molding because of color is composed of two barrel melt mixed molded together, and therefore, from the two barrel 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. The first two-color injection molding design principles: the design of plastic parts, you should consider large-scale color injection molding process of raw materials, such as liquidity and shrinkage. Second: While the design of plastic parts should consider the overall structure of the mold, the mold cavity is easy to manufacture mobile phone sets of double injection mold core pulling and introduced a simple mechanism. Third: to ensure the use of plastic parts, physical and chemical properties, electrical properties, chemical resistance and heat resistance of the premise, and strive to simple structure, uniform thickness, and easy to use. Color injection molding _ Hengxin multicolor (certified) _ double injection provided by Karen multicolor Xin Technology Limited. Karen multicolor Xin Technology Co., Ltd. (www.szhxds.cn) Guangdong Shenzhen, plastic mold leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Hengxin multicolor led the staff warmly welcome all inquiries negotiations to create a better future Hengxin multicolor.