screws

Injection Molding: Are You Using More Than 65% Of Your Barrel Capacity?

If you are, you are inviting Murphy—as in trouble—to the party.

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Film Extrusion

Sizing the Barrier Gap

Here’s a less complex way to properly size the barrier gap for barrier screws.

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Extrusion

How ‘Hydro Wedges’ Reduce Screw Wear

Using them only in the melting section provides for greater design freedom and negates the impact these devices can have on output and melt temperature.

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screws

K 2016 Injection Molding: Rapid Pace of Development

Servo drives dominate. Other trends include multitouch screens, adding materials data to process controls, and Industry 4.0 connectivity.

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processing tips

Which Barrier Screw for You?

It depends ... mostly on the melting requirements of the polymer.

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screws

What Output Can I Expect?

Processors ask screw designers this question a lot. But neither output nor melt temperature can be predicted without details on the polymer and head pressure.

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best practices

Do You Have Screw Wear?

It’s generally caused by metal-to-metal contact, and your first indicator will be poor melt quality.

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best practices

Get Better at Swapping Out Your Twin-Screw Elements

Here’s what you need to know to safely and efficiently remove, clean, restage, and reinstall your twin-screw extruder screw set.

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Extrusion

EXTRUSION: Finding the Sweet Spot in Screw Design

The compression ratio of a screw does not provide enough detail on how it will perform. Screw design is a balancing act that takes many variables into account.

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best practices

EXTRUSION: Understanding The Barrier Gap

All barrier screws are not created equal, and the barrier length and gap can be one of the reasons.

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