Category Archives

I received a blog response which highlights a growing trend in the molding industry… Blogger I am using a pressure sensor at the End of Fill on a new all-electric molding machine. With a DIII process, I am having good success in using the pressure at the end of fill for V/P transfer. This works […]

I received this follow-up question in a recent blog and decided to answer it in more detail using the blog… MJ Which kind of process parameters vary when the screw becomes worn? My Response Basically, the most common affects that arise from screw wear relate to the increased back-flow over the flights of the screw. This back-flow increases mixing, […]

I received this question the other day from an experienced molder… Cindy We have 2 different brands of machines. On one brand, the feedthroat temperature is 85-90ºF, yet the other brand has a temperature of 150-190ºF. Is this difference OK…? and could you comment on what effects the higher temperature will have on the process? My Response Regarding the Machine […]

I received this question as a follow-up question regarding a different blog, and decided it warranted it’s own entry. MJ Does the screw have the same diameter in the front, middle and back screw flight diameter? My Response The typical injection molding screw has the same outer diameter along the entire length of the screw. When measuring […]

During a recent consultation, I was asked this question… Engineer Could you explain how to pack-out a thin-walled part which requires a large amount of pressure to fill? My Response In such a case, the pressure to fill the part is typically very high… therefor, the pressure at transfer is also high. In such a case, […]