Development Overview of Hot Runner Technology
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- Category: Molybdenum knowledge
- Published on 01 April 2015
- Written by limei
- Hits: 237
Hot runner injection molding ensures the flow channel and the gate remains molten plastic. by heating Because in the vicinity of the center of the flow channel or a heating rod and heating coil, from the injection machine nozzle exit to the gate of the entire flow channel are in high temperature, the flow path of the molten plastic to maintain, generally do not need to open after the shutdown runner remove condensate material, just add hot runner then boot to the desired temperature. Application and promotion of hot runner technology is driven by strong momentum thermoplastic injection molding to energy saving, low consumption and efficient direction of development. Hot runner technology came in the 1950s, although its application and promotion has experienced a long time, but its market share is still increasing year by year. The mid-1980s, the United States accounted for 15 percent of hot runner mold injection mold to 17% of the total, Europe 12% to 15%, about 10% in Japan, but in the 1990s, the US production of plastic injection mold hot runner mold has been more than 40%, accounted for more than 90% in large parts of the injection mold. On the International Plastics and Rubber Industry Exhibition 2002 held in Shanghai, the world famous mold manufacturers, such as the United States DME companies, Canadian MOLD-MASTERS companies competing to launch a new type of hot runner systems, and all exhibitors for presentations injection machine Almost all selected hot runner mold, visible, with the development of the polymer industry, hot runner technology is constantly improving and speeding up its promotion of the use.
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