PT ZONE: Extrusion

EXTRUSION: Feedblock Tuning Insert Lets Processors Keep Running
They are also said to allow for greater precision in layer-to-layer thickness control. More (+)
Octal to Start PET Sheet Extrusion in Ohio
APET sheet to be made exclusively from sheet flake. More (+)


MOST RECENT CONTENT: Extrusion

HEATING/COOLING: Novel Heaters for Injection Nozzles, Extrusion Melt Pipes

Plasma-sprayed coating with insulating cover provides faster, more uniform heating.

EXTRUSION: Another Way to Extrude PET Without Drying

A planetary-roller section allows efficient degassing.

A Better Way to Balance Die Flow

Use temperature adjustments before making any mechanical tweaks.

Compounding PLA on Twin-Screws: What Testing Reveals

Twin-screw extrusion is the preferred method for compounding PLA and other biopolymers. But processing PLA is complicated because it’s sensitive to heat and shear. It’s also prone to hydrolytic degradation if moisture is present in molten PLA. Here’s what one machine builder’s trials revealed.

Back to Its Roots in Film Extrusion

After drydocking its film extrusion business in '99, converter goes back to its roots with upstart sister company.

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OVERVIEW:
Extrusion

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Extrusion is a continuous process through which parts of a fixed cross-sectional profile are made. Material is fed through a hopper into an extruder, essentially a rotating screw surrounded by a heated barrel, where it is mixed, melted and pumped through a die. The die gives the part its shape. From this zone you link to information on some of the more common extrusion methods, such as film, sheet, and pipe/profile/tubing


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Learn about continuous feeder types and their operation.

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