Entek Manufacturing Inc. (Booth N71063) is entering the market for toughened barrels for PVC extrusion.
The Lebanon, Ore., firm is making wear-resistant, conical barrels in both nitrided and high-wear, corrosion-resistant 64H materials, said John Effmann, Entek's sales and marketing director, in an interview at NPE2009.
The corrosion resistance is a key feature that nitrided barrels do not have, Effman said. The 64H barrels are a good solution for PVC processors looking to achieve longer processing life from their barrels, he said.
Effmann said Entek bought equipment in 2008 that allows the company to do corrosion treatment and machine parts containing it. In barrels we can offer a very good alternative, he said.
The tough barrels are offered by Entek Plus, a business unit started in December 2008 to focus on supplying replacement wear parts and services for twin-screw extruders. Entek invested heavily in new machining centers late last year to expand manufacturing and reduce lead times on replacement wear parts.
The Entek 64H conical barrels feature a 0.15-inch thickness on the inside diameter of the barrel, about ten times thicker than is typical for nitrided barrels. Tests show the Entek barrels provide almost four times the wear resistance and five times the corrosion resistance of standard nitride barrels, Entek claims.
Entek also is showing at NPE an extruder with new, customized features designed for processing biomaterials. The specially outfitted E-Max 27-millimeter twin-screw extruder includes two dry feeders and a liquid feeder for processing a combination of thermoplastics and a bioresin or starch material.
Effmann said Entek has been making extruders for biopolymers since 2004 and has several installations around the world. Suitable materials for processing include those with reactive components such as starches and plasticizers, bioresins and bio-based blends of resins, or starches with thermoplastics.
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