PT ZONE: Multi-Screw Compounding

From Extruder to Pelletizer: What Happens in Between Influences Quality
There’s a lot more to strand pelletizing than dunking material in water and hoping for the best. Here’s some advice on taking out some of the guesswork. More (+)
PT Article ICMA Sets Up Lab Line In Michigan
Italian twin-screw compounder available for trials. More (+)


MOST RECENT CONTENT: Multi-Screw Compounding

EXTRUSION AND COMPOUNDING AT NPE: Flexibility, Speed, Quality Rule the Day

Extrusion processors need more—of everything—to compete. And suppliers responded in force in Orlando.

KraussMaffei to Expand Local Production of Extrusion Lines in China

Starting in the second half of 2015, KraussMaffei will begin production of its ZE 52 Basic twin screw compounding lines at its recently expanded Haiyan facility.

COMPOUNDING: Two-Stage System Packs Power in Smaller Footprint

Designed for heat- and shear-sensitive materials.

Italian Equipment Makers Aim For U.S. Expansion

Expansion plans by some Italian plastics equipment manufacturers are focused on North America

COMPOUNDING: Process Produces Continuous Medium Glass Fiber Thermoplastic Compounds

Technology deemed most applicable where PP short-glass and nylon short-glass reinforced materials are used.

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OVERVIEW:
Multi-Screw Compounding

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Most materials today are compounded on multi- (usually twin-) screw compounding extruders. Most of these machines feature co-rotating, intermeshing screws, though there are applications in which counter-rotating, intermeshing or non-intermeshing machines are used. Extruders with more than two screws have been developed for applications requiring more intense devolatilization and reactive processing.


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