Basic Knowledge of PET Preform Injection Molding Machine

Basic Knowledge of PET Preform Injection Molding Machine

With the continuous growth of the bottled packaging market and the stability of the global market, the demand for PET preform injection molding machines remains strong. To aid you in selecting an injection molding machine for your bottle packaging project, we have compiled some fundamental knowledge about PET injection molding machines.

When choosing a PET preform injection molding machine, there is a core principle: to improve preform production efficiency and reduce machine energy consumption. In the following four aspects, we will guide you through the key points.

1、Injection Unit:

Temperature Control: Precise temperature control is crucial due to the high melting point of PET material (reaching 255℃) and its short stability time at high temperatures. PET-specific injection molding machines produced by DEKUMA are equipped with high-precision and highly responsive PID algorithm modules to ensure high-quality injection molding. Generally, a faster injection speed can achieve higher quality preforms. However, it is still necessary to pay attention to the shear rate during high-speed injection molding, as excessive shear rate can result in preform fragility.

2、Clamping Unit:Opening and closing stroke

The clamping force and the number of cavities in the mold (UNIQUE can provide molds with 72 to 144 cavities) depend on factors such as the mold and injection pressure. Therefore, by comparing these specifications among different injection molding machines, you can find a more suitable machine. If the opening and closing speed of the injection molding machine is faster and more stable, it will shorten the cooling time of preforms and thereby improve production efficiency.

3、Drive Unit

Using advanced drive unit design can significantly reduce energy consumption. This may involve the adoption of technologies such as servo motors, oil pumps, blow valves, and exhaust devices.

4、Maintenance of Injection Molding Machine

The longer the downtime of the injection molding machine, the greater the losses for the factory. Therefore, simple maintenance of the injection molding machine not only saves repair time but also helps the machine operate consistently and stably, avoiding unnecessary downtime.

If you are interested in learning more about PET injection molding machines or purchasing one, please feel free to contact us. UNIQUE offers a range of preform injection molding machine models, from high-speed machines to standard machines, to fully meet market demands.