1. Heating and Melting
Plastic raw materials (such as PP, PE, HDPE, etc.) are fed into the hopper of the injection molding machine.
A screw pushes the materials into the heating barrel.
Under high temperatures (typically between 160°C and 280°C, depending on the material), the plastic melts into a viscous, flowable state.
2. Injection into the Mold
The screw or a plunger pressurizes the molten plastic.
Within a very short time (milliseconds to a few seconds), it is injected at high speed into a closed mold cavity.
3. Cooling and Shaping
The plastic cools and solidifies quickly after entering the mold, taking the desired shape.
Cooling channels inside the mold accelerate the cooling process.
4. Mold Opening and Part Ejection
Once cooling is complete, the mold opens.
The molded product is ejected by the ejection system, completing one injection cycle.