1. Raw material processing

Firstly, it is necessary to pre-treat the polyethylene particles, such as drying or mixing with other additives (such as color masterbatch), to achieve better molding results. At the same time, it is necessary to select appropriate injection molding machines and molds, and determine the parameter settings of the molding machine based on factors such as the size, shape, and quantity of the parts.

2. Injection molding process of polyethylene PE

(1) Mold design: First, it is necessary to design a suitable mold according to the requirements of the product. The mold can be designed and optimized through computer-aided design (CAD) software.

(2) Loading: Place the pre treated polyethylene particles into the hopper inside the injection molding machine.

(3) Heating and melting: Align and close the mold with the injection system through the locking system of the injection molding machine. Then entering the heating and melting stage, it is necessary to control parameters such as melting temperature, pressure, and time to melt the polyethylene particles into a liquid state in the injection cavity.

(4) Injection molding and pressure maintenance: After melting is completed, the injection molding machine begins to inject liquid polyethylene into the mold. After the injection is completed, a certain amount of pressure should be maintained to ensure that the filling material fully fits the mold.

(5) Cooling solidification: After completing the pressure maintenance, the injection molding machine will no longer apply any pressure. Polyethylene will quickly cool down inside the mold, thereby solidifying and forming quickly.

(6) Mold opening and unloading: Under the control of the injection molding machine, the mold separates and pushes the formed components out of the mold. At the same time, it is necessary to reset the mold for the next filling.

(7) Post processing: Conduct post-processing operations such as cleaning, trimming, and quality inspection on the finished product to ensure that it meets quality standards.