Course: Injection molding defects – Voids

135.60 $ incl. tax


Invisibly hidden beneath the surface, the creation of voids can have many different causes.
And they always lead to compromising the strength in a plastic part.
This needs to be avoided.
The course describes the cause as well as solutions to make sure no voids can be found in your parts.

SKU: EL13199 Category:

You will learn

  • What are the causes that lead to voids
  • About the influence of the mold concept
  • Possible actions to avoid the problem

This enables you to

  • Evaluate whether voids are there or not
  • Understand if changes are possible
  • Optimize the process parameters


About the course: Injection molding defects - Voids

Voids can be critical for the use of a plastic part. In order to evaluate the quality of a part, it is important to understand how to detect voids.
Besides the information of how to do that, all possible causes that lead to the creation of voids will be discussed in the course.
Actions that can be taken will be explained for both, the mold design as well as later on in production.
With this knowledge, the part quality can be optimized.


This course is for

Everyone who is curious about the topic.
This includes especially people working as:

  • Mold designer
  • Setter
  • Injection molder
  • Quality manager
  • Department leader
  • Project manager


Course details

For basic skill level

Around 40 min in duration

Video On-Demand lessons (1)

Spoken script

Expertise knowledge described step-by-step in text

Additional explanations on important technical terms

Full access on computer or mobile for one year

Certificate of completion when you finish the course

(1) Video streaming is part of the e-learning and shall be accessible in your browser.

Course Specialist

Prof. Dipl.-Ing. Peter Wippenbeck



For many years, Prof. Dipl.-Ing. Peter Wippenbeck has been connected to injection molding technology. He started with mechanical engineering and application technology. Even then, the aim was to achieve a perfect product with the best possible economic efficiency. Quite a few customers confronted him with problem cases and asked for solutions and optimized settings in production.


He took on teaching duties at Aalen University, in Germany, in the field of plastic technology in the 70’s to examine the experiences from industry and to pass on his knowledge to future generations of engineers. Soon, he got a managing position there. His work, with international cooperation, led to the establishment of the master’s degree program in Polymer Technology.


Initiated by the professional association of GKV (called TecPart), industrial training in the field of injection molding was intensified additionally to the engineering degree: Several thousand participants at seminars have already been trained by him and qualified in Aalen including a considerable number of foreign employees and trainers, especially from Thailand, India and Indonesia.


In organizational terms, these activities are located at the Steinbeis Innovationszentrum Kunststofftechnik (SIZK, a non-profit company of Steinbeis Innovation gGmbH), while problem-solving is the responsibility of the Steinbeis Transfer Zentrum Aalen Kunststofftechnik (STAK). In both institutes, the author has been engaged in knowledge transfer in the sense of quality improvement and efficiency in injection molding technology.