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Machine Design

Injection-Molding Compounder

An 800-ton MX clamping unit combined with a twin-screw extruder, creates versatile injection-molding compounders (IMCs).

The IMC-technology can mold parts compounded from various raw components (blends) as well as those with fillers, reinforcements, and additives, in a single cycle. The twin-screw extruder directly integrates into the injectionmolding process. Materials melt in the extruder and then mix with glass fibers, fillers, or additives. The melt moves into the shot-pot injector then into the mold. The compounding process is said to be particularly gentle, so high-filler loadings and long fibers can be molded. Dry-cycle times are reportedly only 70% as long as on previous IMCs.

Kraus Maffei Corp., Box 6270, 7095 Industrial Rd., Florence, KY 41042, (859) 283-0200,

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