American Kuhne showing new gearless extruder

Also on display is a modular extruder especially designed for medical and other short run work. Barrel sections can be removed and replaced and cleaned out. Modules can be changed in 15 minutes or so, according to Michael Brocato, aftermarket manager. Barrel sizes can go up to 4 inches.

For inline thermoforming, American Kuhne unveiled a high speed, high output sheet extruder that has a 72 millimeter screw and 33:! L:D ratio. With a direct drive motor the extruder has nominal capacity of 4,850 pounds per hour of polystyrene and 3,970 pounds per hour of polypropylene. Its screw sizes are two to four inches but act like they run to 7-8 inches.

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