At Plastec West 2001, Merritt Davis Corp. displayed a new MD Series extruder for precision applications, such as medical tubing.
The company showed an air-cooled MD extruder with a 1½-inch diameter screw and a length-to-diameter ratio of 24-to-one.
Screw diameters on the complete series range from 3/4-inch to 2½ inches.
Merritt, of Hamden, Conn., used a patent-pending H-frame design, with the extruder centered over four legs that are linked with a crossbeam. The company claims the H setup gives a more stable base than the traditional tripod-mounted design.
Standard features include a one-piece housing and a double reduction gear box rated at 30 horsepower. A 15hp, alternating current vector drive package provides smooth operation for extruding medical products.
The stainless steel hopper boasts a design that improves material flow, eliminating dead spots. The feed throat and screw are chrome plated.
The extruder line has an Xaloy 102 barrel.
Tel. (203) 230-8100, fax (203) 230-8989.