Most extruders are single-screw—about 90% is my best estimate. But that is misleading, because the twins are concentrated in two market areas—rigid PVC and compounding—and the twins for one application are very different from the other.
This slide show details how some of the year’s most innovative thermoformers, honored by the Thermoforming Division of the Society of Plastics Engineers (Bethel, CT) in its annual parts competition, helped OEMs achieve winning designs in the packaging, medical and food and beverage sectors.
Classroom discussions addressing such topics as co-rotating and counter-rotating twin-screw extrusion technology and screw design and process techniques will be supplemented by hands-on operating sessions.
Although the increase was moderate compared with Q1 of this year, Q2 is the fifth consecutive quarterly year-over-year increase in plastics machinery shipments.
When an extrusion system is taken apart, there is a lot of sticky stuff, and it seems logical to remove it. Here are some techniques and tools you may want to consider using to do that; under certain circumstances, though, you may want to do nothing at all.
Patented Feed Enhancement Technology increases material intake capacity in the processing of feed-limited products by up to three times, resulting in increased throughput.
