The proportion of hot runner injection mould gradually increase

Hot runner technology is applied to the plastic injection mould pouring runner system of a kind of advanced technology, is a hot direction of the development of the plastic injection molding technology, used in the popularity of the European and American countries can be traced back to the middle of the last century or even earlier. In China, the popularization and application of this technology is in recent years.

hot runner is the way to ensure the runner and gate by heating plastic molten state. Due to the port nearby or center is equipped with heating bars and heating circle, from injection molding machine nozzle exit to the gate of the whole passage is in high temperature condition, keep the flow of plastic melt, generally do not need to open the port after downtime remove condensate, and then only when the boot heat flow to the required temperature can be. Hot runner technology, therefore, are sometimes referred to as heat collector tube system, or called no runner molding.

“ With the increasingly popularization and application of hot runner technology, hot runner mold in plastic mould proportion will gradually increase. ” International mold association secretary general luo hui said, in a foreign country, many of the plastic mold factory production, more than 50% of the mould using hot runner technology, some even more than 80%, the effect is very obvious. Hot runner in China have also been used in the production, but is generally less than 10%, the gap is huge, but it also means that the industry in China has a large space for development.

in recent years, the hot runner technology in China gradually promotion, to a great extent, is due to the domestic mold exports to Europe and the United States company's fast. In the European and American countries, is quite depends on the hot runner molding production technology. It can be said that the basic do not use the mold hot runner technology is now difficult to export. But with many imports more expensive mould of hot flow path, a large part of the domestic manufacturers can not accept, so there is some of the domestic commercial hot runner mold. For the hot runner technology in China has a lot of benefits.