热Runner Parts Wholesale What are the limitations of a full hot runner? The complete hot runner is a hot runner system with no gate waste and only injected products. Compared with the cold runner, the complete hot runner has a good effect in saving resin and reducing the injection cycle. All kinds of problems in the use of complete hot runner system have also been paid attention to

1. Aging failure of hot nozzle hot coil, aging failure of hot nozzle thermocouple sensor, hot runner system which can provide runner free function is often not satisfactory in stability, which is mainly due to the complex electric heating structure of hot nozzle of hot runner system and the high risk brought by the continuous high temperature working environment of hundreds of degrees Celsius all year round. The hot nozzle structure of the hot runner system is complex, and the failure rate is high, resulting in expensive molds and injection molding machines with too high down time, and the production efficiency and actual production capacity are greatly affected, so engineers have been looking for a simple structure more stable than the hot runner system

2. With the increase of the injection pressure of the nozzle of the straight gate, the residual internal stress around the gate also increases, and the probability of poor molding of the product is very high.

3. Complete hot runner structure is complex and expensive

4. High price resin PEEK, LCP, PMMA, PPS, etc. are not suitable for complete hot runner.