Davis-Standard has introduced the latest option in its award-winning feedscrew line, the DS-Blend, to improve the performance of a single screw extruder for demanding applications by providing distributive and dissipative melt mixing.
According to the company, the two-stage approach achieves outputs similar to those of a single-stage barrier screw, but with a lower melt temperature and reduced energy requirements. It can be installed on new or existing single screw Davis-Standard extruders as well as non-Davis-Standard brands.
John Christiano, vice-president of Technology at Davis-Standard, says: “This is one of our most versatile and energy-efficient feedscrews to date. Customers interested in seeing this design in operation are invited to visit our research and development facility in Pawcatuck.” He added, “As with all of our feedscrew designs, we are focused on product line performance, 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 from 3/4 to 12 inches (19 to 300mm) in diameter with varying L/D’s. Each screw is engineered for specific polymers and processes with customisation available depending on end product. They accommodate the full range of extrusion and converting applications including blown film, blow moulding, cast film, compounding, elastomer, extrusion coating, fiber, laboratory, pipe, profile and tubing, reclaim, sheet and speciality systems. Sales and service engineers work alongside customers to find the right solution based on manufacturing parameters. Testing and trials are available to fine-tune the process prior to purchase.