Dual-Zone Hot Sprue Bushing
Melt Design’s Equatemp line of hot sprue bushings now has a dual-zone model.
The latest addition to the Equatemp line of internally heated sprue bushings is the first dual-zone model in the series, in which the two zones have individually adjustable temperatures. The new unit from Melt Design has two internal heaters and two replaceable thermocouples, as well as a high-purity ceramic insulator and four tip options. It is recommended for use with high-temperature engineering resins such as are used in automotive and certain medical applications.
Burns in hot runners can be misleading and hard to diagnose correctly. Follow these tips to track down the root cause of your problem.
It goes against conventional wisdom, but molding with blocked cavities can be done while maintaining quality with the help of appropriate in-cavity sensors and process-control software.
There are simple explanations for the most common hot-runner problems and equally simple ways to prevent them. One is to take advantage of features often overlooked in today’s hot-runner controls.