EXTRUSION: Thermoformer Supplier Now Building Sheet Lines

Specializing in PP mono and coex systems.

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WM Thermoforming Machines, Stabio, Switzerland, has added sheet extrusion systems to its product line. The firm’s N.EXT line of single-screw extruders are available in screw diameters of 45, 75, and 90 mm with 36: 1 L/D. For polypropylene, outputs are said to range from about 1000 to 2000 lb/hr.

All units are equipped with water-cooled AC motors for high energy efficiency and low noise emissions. Screws and barrels are made of nitrided steel, but special bimetallic or Stellite versions are available for processing filled materials. Extruders come equipped with a continuous hydraulic screen changer and gear pump.

Complete systems are also offered with coextrusion feedblocks, flexible-lip dies, and cooling and polishing roll stands.