1. The mold structure is complex, the cost is high, and the maintenance cost is high. 2. It takes a while for the boot to be stable, resulting in more scraps.
3. When there is melt leakage and heating element failure, it has a great influence on product quality and production schedule.
The third disadvantage mentioned above can be reduced by purchasing quality heating elements, hot runner coil heater plates and nozzles and carefully maintained during use.