wiredinUSA October 2019

Davis-Standard’s new DS-Blend feedscrew

Extruder feedscrew

Davis-Standard has introduced a new option for its DS-Blend feedscrew line. This patent-pending design is said to improve the performance of a single screw extruder in demanding applications by providing distributive and dissipative melt mixing. Thetwo-stageapproachachievesoutputs similar to those of a single-stage barrier screw, but with a lower melt temperature and reduced energy requirements. It can be installed on non-Davis-Standard extruders, as well as onto new or existing single screw Davis-Standard units. According to John Christiano, vice president of technology at Davis- Standard: “This is one of our most versatile and energy-efficient feedscrews to date.

As with all of our feedscrew designs, we are focusedonproduct lineperformance, improved outputs, material homogeneity and feedscrew longevity. We are also proud of the fact that we can build a feedscrew for any extruder brand.” Davis-Standard’s DSB ® feedscrews are available in diameters from¾ to 12 inches (19mm to 300mm). Each screw is engineered for specific polymers and processes and, depending on the end product, with customization available. Davis-Standard feedscrews accommodate the full range of extrusion and converting applications including compounding, elastomer, extrusion coating, fiber, pipe, profile and tubing systems.

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wiredInUSA October 2019