I received this comment the other day regarding a recent post...
Two of our techs recently received training certification, but I don't see any real change between them and the other technicians.
Most certifications are based on the participants ability to pass some tests in a class setting. This process is beneficial in introducing new techniques and ideas to the employees, but seldom helps in changing the employees behavior. Most experts believe it can take many months to effectively change behavior. As a result, you must implement a broad reaching approach to training which not only teaches the new concepts, but reinforces the correct behavior over time.
In the case of plastics processing, the employee needs to know how to process, practice the knowledge, and have the right processing and troubleshooting techniques reinforced by those in the workplace.