PAWCATUCK, Conn.—Davis-Standard L.L.C. has been busy on several fronts.
The Pawcatuck-based developer of extrusion and converting technology has redesigned its DS thermatic rubber extruder with a servo feed roll control; introduced the next generation of its economical DS-eTPC touch-screen control; and is pleased with headway made by a new distributor for its pipe, profile and tubing, and elastomer product lines in Mexico.
The newly designed servo control feed roll system is on the firm's DSREV rubber extruder Model 2000, which is Davis-Standard's flagship design. It is a preconfigured machine with feedscrew and head zone direct-injection temperature control units, a compact base, and simplified cooling and wiring systems. It offers touch screen controls, process data acquisition and easily accessible machine components.
Davis-Standard said benefits of the Model 2000 include reduced scrap and faster start-up times. The hydraulic actuation of the flow diverter/core tube enables quick tooling changes and simplified cleaning.
In addition, when coupled with the Uth rollex-brand 70 gear pump/strainer systems with two-roll feeder, the firm said processors can isolate high pressure and achieve pressure stabilization.
"The DSREV has a completely redesigned feed roll system," said Joseph Wnuk, Davis-Standard vice president for elastomer and profile systems. "It gives precise control of a feeding bank of material. It has elimination of chains and clutch and other wear items, and has an overall compact design."
Wnuk said the revamped product was a collaborative effort that took into account customer feedback and Davis-Standard's continuous improvement philosophy of process control.
Thus far, the reception from customers has been good. "We're actually getting feedback of retrofitting existing machines in the field," he said.
The DSREV is used for such applications as EPDM seals, hose and medical tubing. The company said it has the machine as part of the technical cell at its facility in Pawcatuck that supports research and development efforts. Wnuk said the technical cell is regularly utilized by customers for trials and process evaluations and optimization.
Activity in Mexico