Dynisco LLC (Booth N69063) is introducing several sensors and controls supporting its push in extrusion as a key plastics market.
Its six new products promise to give better control over the extrusion process, reduce downtime and minimize scrap. Dynisco officials said getting more out of the extrusion process not only saves money but also helps achieve sustainability goals.
The company's most prominent new product is the Opt-Trol system, which integrates control of most extrusion lines.
The system offers adaptive, autotuned temperature, pressure and speed control. It also allows differential control near screen changers, and shows trends in process variables from a color touch screen. The system is affordable and modular, Dynisco officials said.
Integrating extrusion control is now especially important because processors have been streamlining, often losing expertise and labor resources in the process, said Matthew Carrara, vice president of Dynisco's plastics segment.
[Processors] will be coming to NPE looking for integrated solutions affordable products that are versatile and easy to install, and that can work together to minimize process variability, document operating conditions and ensure end-product quality, Carrara said in a recent interview.
[With Opt-Trol], pressure control is included, unlike in standard systems, Dynisco President Ken Brown said. Opt-Trol can be used on new extruders or retrofitted on existing equipment to give advanced control.
Many of our customers have told us that they want to move to an integrated extruder-control system, Mike Davis, Dynisco product manager, said in a news release. But they've been put off by the high price of available systems. Opt-Trol addresses that issue with a simple, affordable, expandable solution that works perfectly with Dynisco sensors and instruments.
Opt-Trol saves costs and labor, Carrara said. Its trending of statistical process control would be especially useful for medical extrusions, he said.
Several other new products will be featured at NPE2009, June 22-26 in Chicago.
* SPX-L pressure sensors that employ a unique algorithm to reduce the error brought on by conditions in and around the process. The sensors improve linearity by 80 percent and reduce combined error by 25 percent.
* SPX-T pressure sensors that have an RTD (resistance-temperature-detector) temperature sensor built in to allow for a temperature compensation function. It reduces pressure-reading drift due to ambient temperature changes by as much as 80 percent. The temperature readings can connect to a controller display, giving processors the convenience of pressure and temperature sensing in one instrument.
* UPR800 temperature/pressure panel indicators contain a lot of information in a small, 1/4-DIN industry-standard package. As well as the primary input measurement of pressure, voltage or current, an optional secondary input makes it possible to display pressure and temperature simultaneously, or to display two differential pressure readings at the same time.
* The ATC880 self-tuning controller manages critical process parameters such as polymer melt pressure or temperature. The cost-effective device has a software-based configuration that, by using touch buttons on the unit's face, gives users a wide range of design options. Users can choose simple range and alarm settings or complex security codes and update speeds, depending on the sensitivities of the application.
* SPXD is a new, intrinsically safe, loop-powered digital display that takes a 4-20 milliamp signal from an SPX pressure sensor or any 4-20 milliamp transmitter and displays the value on a large, 1-inch liquid-crystal display.
Upstream of the extruder, Dynisco recently debuted its VTM dynamic mechanical laboratory analyzer for polyolefins. Advanced software is used to collect a wider range of rheological data more easily and quickly than previous systems. A new method measures long-chain branching.
The VTM analyzer measures properties in a pressurized sample chamber instead of a more conventional open cavity, thus reducing edge effects and potential contamination. It gathers standard data such as dynamic viscosity, elastic modulus, viscous modulus and tangent delta.
The VTM was adapted from Dynisco's rubber instrumentation technology and is especially well suited to PE pipe extrusion.
VTM can analyze in 10-12 minutes what used to take hours in conventional technology, Dynisco claims. It is less expensive and more highly automated than previously available systems.
Dynisco is extending the technology to be applicable to thermoplastic elastomers and PVC, Brown said.
Rounding out Dynisco's exhibit are end-product testing instruments for physical, mechanical and thermal properties and flammability of polymers.
Brown said Dynisco has been investing in research and development through the current economic downturn.
Companies that cut back fall out of favor, he said in a pre-NPE interview.
In the past, we've seen that products introduced during and immediately after a downturn can really change the game, Brown said. We've changed our approach to the market so that we can better understand the problems our customers face and then map those needs against our core technologies.
Quotations are up due to new products, Brown said. In plastics, a lot of our expansion is due to new products.
Dynisco has shortened its delivery time to about two weeks for most products, compared with an average of four to six weeks before. About 70 percent of the melt pressure products can be turned around in 24 hours. Short delivery times means a processor can cut back on inventory.
Last year Dynisco organized itself into three segments: plastics, rubber and composites and general industrial.
That allows the company to better focus on customers as each segment is free to pursue different strategies, Brown said.
Dynisco is owned by Roper Industries Inc. of Duluth, Ga., an instrumentation and technology company which bought the Franklin, Mass., firm in late 2006.
They make sure our focus is growth, not just cost reduction, Brown said.