New purging compound slashes injection machine downtime, scrap by half

Last year, the Dyna-Purge Division of Shuman Plastics (Depew, NY) introduced Dyna-Purge D2, reported to be a breakthrough technology that enables users to purge more resins with just one product. Now, plastic processors worldwide are enjoying the benefits of what Dyna-Purge officials call the “hardest working purging compound” in the industry.

IMCO, Inc. (Rochester, NY) provides an example of how companies can cut purging costs and machine downtime with Dyna-Purge D2. IMCO is a custom injection molding company serving a wide array of customers. Among IMCO’s many products are clear polycarbonate lenses and window parts made with black polyester. The company operates molding presses ranging from 40 tons to 720 tons, including 22 Sumitomo machines with screw sizes ranging from 36 mm to 80 mm. Their Dyna-Purge representative introduced IMCO to Dyna-Purge D2, providing a sample for testing and evaluation.

"We had been using Dyna-Purge M with great success," explained Todd France, IMCO's Maintenance Manager. "After sampling Dyna-Purge D2, we found our purging results can be even better. The purging compound cut our post purge costs and downtime in half."
France noted IMCO purges equipment when necessary, sometimes up to four times per week, for color changes or whenever there is any question of possible contamination. IMCO often uses materials such as polyamide, polypropylene, PEI and PET that are among the more difficult resins to purge.
Using Dyna-Purge D2 allowed IMCO to complete a changeover in less than 10 minutes. The company also reduced scrap by 50% while transitioning to the next production resin. By improving production capacity, IMCO is able to take on more new projects.
"An independent study conducted by The Institute of Polymer Science & Polymer Engineering at The University of Akron on Dyna-Purge D2, demonstrates that it is more effective than mechanical (abrasive) and chemical purging compounds, resulting in faster cleaning and less downtime," explained Tim Cutler, Dyna-Purge Vice President. "Dyna-Purge D2 saves time and money as it lowers purging costs and scrap rates. And it's so easy to use with no processing adjustment or mixing required."
Dyna-Purge is encouraging customers and prospects alike to stop by their booth (W4253) at the NPE Trade Show in Orlando to obtain more information on the new purging agent can help them lower scrap rates and improve changeover times. Dyna-Purge will have D2 on display and will be offering no charge samples for trialing.
Dyna-Purge D2 reportedly delivers ease of use through its innovative scrubbing formulation and wider processing temperature range, making it an ideal solution for injection, extrusion, compounding, and blow molding applications.