Category Archives

I received this question the other day… Nathan Can you please advice me the wall thickness of this Product with PP material to withstand 100kg tensile stress? The maximum thickness is 4mm. note: the part has a round diameter in the middle, so the thickness referenced is actually a diameter. My Response For online purposes, we conducted […]

I received this question via email the other day… JD What is the best way to eliminate mold sweat? My Response Mold sweat, or condensation on the mold surface, occurs when the dewpoint of the air is higher than the mold temperature. When air reaches it’s dewpoint, water vapor will precipitate out of the air and accumulate on the mold surface. […]

A blog reader emailed me some pictures regarding a product which is encountering post-molded contamination of various fibers. After some question and answer, it appears they are using a cleanroom environment and the fiber contamination is from many sources. Most of the typical precautions have been investigated and they are looking for a different opinion […]

This question addresses a common issue for many techs… Jane What is the best way to evaluate the performance of a check ring? My Response To evaluate the performance of the check ring, it is recommended that you perform the dynamic check ring repeatability test. This test consists of producing and weighing a series of […]

I reviewed the previous post where the blog reader asked whether electric machines are good for applications with long hold times and I wanted to add another comment… Shut-Off Nozzles Although some molders purchase shut-off nozzles to eliminate drooling, they are very helpful as part of an overall molding strategy. In the case of a process with a long […]