Lately I have noticed a great deal of companies ignoring the integrity of the material during screw recovery. During a recent on-site training visit, one student was encountering significant quality issues with a particular product molded from TPE. In reviewing the situation, it appears the material may be damaged or degraded during recovery which will contribute to the quality […]
Only 2% Improvement…?
In response to a recent class, a participant encountered this result… Participant We have very fast screw recovery times, typically less than 2 seconds. When performing the rear zone temperature study, there was a steady increase in recovery time from 1.78 sec. @ 225°C to a result of 1.82 sec. at 260°C. Does this seem like a […]
I occasionally see employees confuse blisters and delamination and wanted to clarify this here. Delamination Delamination is the layering of the polymer as it fills and packs the mold. With this defect, different unconnected layers of plastic develop and form within the part. Blisters Blisters are gas bubbles which appear as small bumps on the surface of […]
Learn and Apply…
I wanted to bring up a very important aspect of employee training… Learn and Apply Training is most effective when it has at least two components. The initiative should have aspects intended to teach the important underlying concepts to the employee. These are intended to provide the ‘why’ aspect of the learning. In general, people are less […]