All the Scientific Molding principles apply when developing a process for V-P transfer using a temperature probe as with a process developed with position transfer. Question: How does the development of a process differ when using a position transfer vs.a transfer via temperature sensor? My Response: The purpose of transferring using a signal from a temperature sensor […]
Category Archives
Plastics Technology
Purging Co-Extrusion Dies…
When using mechanical purging compounds to purge co-extrusion dies, it is important to not purge all the extruders through the die at once to prevent excessive die pressure buildup. Question: I have been told “For co-extrusion it is important to purge from first to last and not all at once”. Could you explain this? My […]
Fill Time Monitoring…
The fill time is not expected to vary much form shot to shot. Typically, large variations indicate a parameter change or a change in machine performance. Question: We are using fill time as one of the process outputs for monitoring the process consistency. There is hardly any change which is showing variations. My Question is it a […]
The Pitfalls of 98% Full…
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 […]
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 […]