PT ZONE: Hot Runners

Know Your Options in Valve-Gated Hot Runners
Valve-gated hot-runner systems have been used for almost 50 years as a way to efficiently mold large parts. More (+)
INJECTION MOLDING: Brass Replacement Heaters for Hot-Runner Nozzles
Direct replacements for all OEM nozzle heaters. More (+)


MOST RECENT CONTENT: Hot Runners

Beefier All-Electric Machines With Enhanced Control Features

Presses designed to dismiss the perception that all-electrics can’t handle larger, heavier molds.

TOOLING: Hot Runners: A View from the Trenches

I conclude this three-part examination of real-world problems and solutions involving hot runners by focusing on heaters, thermocouples, and controls. Part 3 of 3.

TOOLING: Straight Talk on Hot Runners

Here’s a view from the trenches of a tooling manager who, over 30 years, has experienced the joys and pains of using virtually every type of hot runner on the market. Part 2.

TOOLING: Hot Runners: A View from the Bottom Up

Addressing hot-runner benefits, improvements, and everyday issues from the perspective of decades of experience with probably every brand on the market. Part 1 of 2.

Tool Time at Molding 2016

Plastics might replace metals in various applications, but in injection molding those parts require steel-based tools to be created, putting molds, and metal, at the center of the process.

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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.


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» 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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