PT ZONE: Hot Runners

Hot Runner Running Efficiently?
Follow these tips to set up your system and keep it running smoothly. More (+)
PT Article INJECTION MOLDING: Valve-Gate Control with Variable Pin Speed
Said to reduce shot hesitation, blush, and air entrapment and to ensure overall smoother, more consistent filling. More (+)


MOST RECENT CONTENT: Hot Runners

Prevent & Minimize Downtime in Hot Runner Molding

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.

Reduce Hot-Runner Downtime With Proper Troubleshooting

Solve your problem faster by adopting a systematic approach. Here’s how to get going.

How to Avoid Problems When Using Commercial Purging Compounds

The best approach is to implement and standardize a three-step program to ensure you are purging in the best and most cost-effective manner possible.

TOOLING: Expanded Training in Hot-Runner Maintenance/Repair

Training course is doubled in length.

Show Us Your Worst Hot-Runner Leaks!

This leak was detected early with automated controls, to be discussed in an upcoming article. Help show what happens if leaks get out of hand.

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OVERVIEW:
Hot Runners

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A hot runner system is an assembly of heated components—hot halves, nozzles and gates and—that inject plastic into the cavities of an injection mold. The system usually includes a heated manifold and a number of heated nozzles. The manifold distributes the plastic entering the mold to the nozzles, which then meter it precisely to the injection points in the cavities. The hot runner is equipped with its own temperature control system.


more (+)

» Purging Compound

Sooner or later you will need to purge your machine. Which material should you use to purge your screw and barrel?

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