The Five Parameters of Injection Molding: Its Positive Impacts

The Five Parameters of Injection Molding: Its Positive Impacts

By Carter Kho

What are the five parameters of injection molding that brings positive impacts?

  1. Injection time
  2. Injection pressure
  3. Injection temperature
  4. Keep pressure and time
  5. Back pressure


Injection molding in China has been the leading provider of high-quality plastic parts that are used for a wide array of applications. It is the reason why injection molding companies look up to China as the role model for structural integrity in design and functionality. This success can be attributed to the loyalty of these injection mold makers in satisfying the parameters of injection molding in accordance with the requirements of the client.

As a future collaborator with injection molding in China, being knowledgeable of the parameters involved in the production process of mold designs will ensure that you can get your money’s worth. Considering the cost of injection molding in China, you will get an affordable deal all while having top-notch products for your brand. You can see the positive impacts of those five parameters in plastic injection molding here so you incorporate them for your next project.


Injection time

Of course, injection time should be heavily considered in molding because this will make all the difference in the final product appearance and functionality. The injection time refers to the required time in the plastic production that deals with the plastic melt which will fill the mold cavity.

The injection time’s influence on the molding cycle is significant because this will allow you to think about the adjustments that you have to do in order to achieve maximum performance with the plastic part. The positive impact of the injection time affects the pressure control of the gate, runner, and cavity, which is why you should talk about this with your injection mold manufacturer. This is very important if you want improvements for the surface quality of your products, eliminating molding defects, and reducing dimensional tolerance. Plastic injection molding is a complex process, but with these pointers in mind, you can be immersed in the process of the industry even if you are not behind the execution of the production altogether.



Injection pressure

Injection pressure

If you are not familiar with injection pressure, you should know that it is provided by the hydraulic system of the injection molding machine. The cylinder pressure is responsible for the flow of the mold to put the injection molding process underway. The hydraulic cylinder pressure is mainly responsible for this as it passes on the injection molding machine screw into the plastic melt. This pressure is essential because it is the reason why resistance is conquered in the process of melt flow.

Factors such as material, structural, and the forming process elements should also be paid attention to because these are integral in making the injection pressure a success. Material factors include the types of material and the thickness that it can give to the production process. On the other hand, the structural factor deals with the casting systems, the shape of the molding cavity, number and location of the parts, and the thickness of the parts. Lastly, the forming process elements deal greatly with the functions in injection molding and how it uses the five parameters to its advantage.

Injection Temperature

The temperature should be greatly regulated so you can use its potential to work hand in hand with the injection pressure. The injection molding machine’s heating functions make for a proper machining temperature. The injection temperature should be controlled within a certain range in order to make the production a success. Employing balance in the temperature will result in an advantage in the final quality of the parts.

The process of custom injection molding works closely with injection temperature as the required parameter to achieve higher values associated with the injection rate and material performance. Injection molding deals with machining difficulty as one of the performance attributes that need to be taken care of. To achieve advantageous impacts, try to measure the temperature of the molten material in the injection molding and including the nozzle when undergoing the modeling process.

Keep pressure and time

Keep pressure and time

The injection molding production is powered by a series of mechanisms dealing with rotate screws and nozzle processes. That will ensure the protection stage and its pressure. The nozzle from the injection molding machines deals with continuously filling the cavity in order to fill the volume that can result in filling the volume that is empty due to the shrinkage. Ensure that the cavity is filled so the production can keep the pressure, especially if the cavity is contracted because of the shrinkage. Keeping the pressure in line with the injection time will be crucial in the injection molding process.

Back Pressure

Aside from the injection pressure, the back pressure is advantageous to the flow dispersion, the melting of the plastic can be extended to the time of the screw retraction to the machine. This means that reducing the length of the plastic fiber and increasing the pressure of the injection molding machine would be easier so that the back pressure could be lower. The back pressure should be programmed so that the shrinking could be compensated during the melting period. Adjust the machine accordingly so you would be prepared for changes which can be difficult to estimate.


Key Takeaway

These are the five parameters of injection molding which you should keep tabs on during the whole production process. Injection molding companies have a wide range of expertise that greatly employs the five parameters of production. Keep these in mind so you can achieve the design requirements that you are aiming for.