When your mold is 98% full, packing is already beginning to take place. This makes it nearly impossible to completely separate filling from packing. Question: I configured my mold with a 98% fill and finish with packing. Why do I still get sinks and short shots? My Response: We always recommend 90-95% because 98% fill […]
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Routsis Training
New Injection Molding App…
We have a new Mobile App that is available for your entire staff at no cost. This handy Scientific Molding “Pocket Guide” contains essential processing information for all injection molders. The guide now available as an app for both Apple™ & Android™ devices, or pdf. The Scientific Molding Reference Guide includes: Understanding Plastics Plastic Materials […]
Increasing Part Density…
Polymers are compressible, so there are many ways to increase density of your molded part. This is especially true for semi-crystalline polymers. Question: Our customer is complaining our product density is lower than other suppliers based on a 3D CT SCAN inspection of our product. How do we increase the density of the PA66+30%GF product. My […]
Fixing Mold Sweat…
In a non-climate controlled environment, cold molds will often ‘sweat’ on humid days due to the mold surface temperature being lower than the dewpoint of the surrounding air. Question: We have to warm up our molds during the summer to keep the molds from sweating. This results in much longer cooling times. Management will not […]
Skill Development Requires Practice…
Knowledge of a topic or concept is critical to understanding, but practice is the key to skills development. Question: I want my engineers to learn scientific molding skills, but can’t they just take the online courses? Do they really have to bother with the hands-on worksheets? My Response: If someone reads about Scientific Molding in […]