Alternate Sources of Fiber Contamination…

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 […]

Don’t Overlook the Basics…

I recently encountered a customer with a common concern… Customer Should I start all my production employees through the basic level of training? My Response Any company, such as this one, which lacks any structured training program, will benefit highly from a broad-based training initiative. Such an initiative should start from the top down, and begins with the basics. […]

Evaluating Check Ring Performance…

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 […]

Shut-Off Nozzles and Long Hold Times…

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 […]