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Amazing! 500 Bottle Caps Produced in One Minute with Hot Runner System

500 plastic cups or 500 bottle caps are produced in one minute. Oh my god, it’s so amazing! Indeed, it is probably a fantasy to achieve such high efficiency with traditional production lines. But hot runner system has achieved and is constantly improved at present. 

Almost every industry, including construction, electronics, aviation, automotive, medical, food and beverage, more realizes the potential for gaining a competitive advantage. Injection molding is not only an efficient method of manufacturing precise plastic parts and components, but also reduces production time, has high precision and reduces material waste. It can produce plastic parts that are as strong as steel, or can be very soft and flexible.

When using the plastic injection molding process, the manufacture of any part starts with the mold. The molding system is divided into two categories: hot runner molds and cold runner molds. The hot runner uses a screw nozzle, which is fed by a pump through the barrel, while the cold runner uses a closed thermosetting mold. The main task of any runner system is to guide the plastic melt from the runner to the mold cavity. 

The system requires additional pressure to push the material through the flow channel. The frictional heat generated by the material in the runner mold flows through the runner and increases the temperature, thereby facilitating the flow. One of the best rewards of any project is to reasonably determine the size of the runner for a given component and mold design.

The nozzle is the key component of the hot runner mold. In the hot runner system, in order to maintain the molten state of the plastic in the nozzle, heat insulation must be as perfect as possible, and some nozzles need to be heated internally or externally, while the cavity needs to be cooled. The temperature difference between the two is usually 100~200℃. Therefore, the material and design of nuzzle should meet the thermal balance requirements in priority, which are necessary to avoid too much cold material in the nozzle to solidify and block, but also to avoid overheating of the plastic, casting or drawing, or even decomposition.

The best material for machining nuzzles is titanium-zirconium-molybdenum alloy (TZM alloy). TZM nuzzle can maximize the utilization of materials and meet the requirements of plastic melt insulation and heating. In addition, molybdenum alloy nuzzle also has a very long service life, which can greatly reduce production costs. 

Chinatungsten Online is a very professional manufacturer of tungsten and molybdenum, with rich experience in the production of titanium-zirconium-molybdenum alloy rods. If you have any purchasing plan, please feel free to contact us.

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