Plastic injection molding: process optimization

If there is one star process in the production of parts of all kinds, it is injection molding, and if there is one thing that can make it one of the most widely used processes, it is process optimization.

By improving the way in which each stage of production and manufacturing of a plastic part is carried out, from mold design to material selection and the configuration of injection parameters, companies can reduce costs, minimize cycle times and improve the quality of the final products.

At Atienza y Climent we are experts in industrial plastic injection, we know the injection process in detail and in this article we want to share with you the advantages of these mass production techniques, how it optimizes times and why it is one of the most used.

Inyección plástico

Key parameters in the optimization of the injection molding process

Companies seeking excellence in their products must consider, understand and perfectly master the plastic injection molding parameters necessary for the process to be cost-effective, fast and of the highest quality.

Each one of them is essential to guarantee the technical and mechanical properties of the plastic part to be manufactured.


This is one of the most critical parameters in the injection molding process. Controlling the temperature in the plastic injection molding process is essential to guarantee the quality of the molded parts. Through design of experiments and process simulation, optimal temperatures can be determined for each type of material and part design, thus maximizing quality and minimizing errors.

Injection speed

This plastic injection molding parameter refers to the speed at which molten material is introduced into the mold during the injection process. Adjusting the speed and timing is crucial to avoid problems such as air bubble formation and underfilling in critical areas of the mold.


Cycle time

Cycle time refers to the total time required to complete a single injection molding operation, including mold filling, part cooling and ejection. Reducing cycle time is critical to increasing productivity and reducing production costs.


Mold design

Mold design is a fundamental part of the plastic injection molding process. Mold geometry, cooling distribution and location of material inlets are key elements that directly affect the quality and efficiency of the process. Careful design contributes significantly to minimizing cycle times, reducing waste and improving the quality of molded parts.

Mold maintenance

Regular mold maintenance is essential to ensure optimum performance and prolong mold life. Periodic cleaning and inspection can help prevent problems such as premature wear and residue buildup, which can adversely affect the quality of molded parts.

Material selection

The physical and chemical properties of the material selected have a direct impact on the quality, strength and durability of molded parts. The correct selection influences aspects such as dimensional stability, corrosion resistance and the ability to withstand adverse environmental conditions.

Techniques for process optimization

To improve the efficiency and quality of the manufacturing technique and of the plastic parts obtained, techniques that optimize the plastic injection molding process can be applied. These strategies help to reach and satisfy the market demands and the technical characteristics of the part in an efficient way.

Injection pressure control

This parameter is essential to ensure uniform mold filling and prevent defects in the molded parts. Proper adjustment of this variable optimizes the quality of the final product and reduces the number of failed parts.

Cooling time optimization

Optimizing this part of the process is necessary to speed up the production cycle and increase productivity. By implementing efficient cooling techniques, it is possible to reduce cycle times and improve efficiency.

Use of assisted filling technology

This technology offers an innovative way to improve quality and consistency in plastic injection molding. By using efficient filling technologies, mold filling can be more precisely controlled, defect formation can be reduced and the performance of the manufacturing process can be optimized.

Additional considerations for optimization

In addition to the techniques mentioned above, there are other important considerations that can contribute to the optimization of the plastic injection molding process.

Here are some examples:

– Constant monitoring of the performance of the process operation, equipment… in order to be able to prevent technical failures.

– Implementation of rigorous quality control systems at each stage of the process.

– Continuous training of staff to ensure proper handling of machinery and materials.

– Periodic evaluation of market trends and updating of production practices as necessary.

– Close collaboration with material and equipment suppliers to keep abreast of the latest innovations and technologies available.

By putting all these recommendations into practice, more efficient processes and significant cost reductions can be achieved.

At Atienza Y Climent we are professional experts in plastic injection molding. If you need solutions for your industrial projects, do not hesitate to ask us for information, we will be happy to help you bring your ideas to fruition.


Impresión 3D

Benefits of 3D printing in industry

3D printing is revolutionising industry by offering an alternative for manufacturing products quickly and efficiently. The different additive manufacturing techniques (fused deposition modelling, stereolithography, DLP

Leer más »

Descubre todos
nuestros posts

Novedades Atienza & Climent

Suscríbete para recibir las últimas noticias