1. Processing temperature, the processing temperature of bottle-shaped blow molded products is mainly related to the plastic materials used and the characteristics of the equipment.
Under normal circumstances, small and medium-sized barrel-shaped blow molding products generally use HDPE with better fluidity or a blend of HDPE and LDPE. The processing temperature is between 130 and 180 ° C, and the processing temperature of a few materials may be higher than 180. ℃. The temperature is set from low to high from the feed port of the extruder in order to facilitate the normal processing and molding.
2. The screw speed of the extruder, the screw diameter of the extruder system of the medium hollow molding machine is smaller, the screw speed can be relatively higher, the speed can be adjusted according to the characteristics of the iron barrel products and the screw of the extruder, and the screw speed is controlled Within 10 ～ 70r / min.
3. The pressure of the hydraulic system. In the iron drum, the pressure of the hydraulic system of the small and medium-sized hollow molding machine is adjusted between 8 and 14 MPa, which is mainly adjusted according to the molding characteristics of the blow molded product. When the blow molded product is satisfied, it can be Adjusting the pressure of the hydraulic system to work in a lower pressure state is conducive to saving energy and extending the service life of the hollow molding machine.