The Dyna-Purge division of Shuman Plastics Inc has selected this week's Plastec West Show in Anaheim, CA to announce its New & Improved Dyna-Purge M purging compound. Why change a workhorse the company says is the most widely used commercial purging compound in the industry? Because "Improved" means 36% faster using 22% less material—at least.
Dyna-Purge M has been on the market for about 20 years and has been reformulated for improvement several times. This latest version is based on using two non-melting but softening proprietary scrubbing ingredients to enhance cleaning, plus a proprietary additive that helps remove contamination without leaving a residue.
The levels of performance improvement noted above, which are for the New & Improved formula tested against the previous version of Dyna-Purge M, serve as a starting point. According to Nancy Mitchell, Dyna-Purge's technical product manager, the New & Improved formulation has been proven to reduce material and scrap use by up to 64% and lower purging time by up to 90% versus competitive purging products.
Mitchell explained that the company asked the Institute of Polymer Science and Polymer Engineering at the University of Akron to conduct a study comparing the N&I formulation to the original Dyna-Purge M, as well as to other purging products, such as in-house resin (HDPE), and mechanical, chemical, and hybrid (mechanical/chemical) purge compounds.
In each standardized trial, New & Improved Dyna-Purge M did its job using significantly less time and material, and the full report from the U. of Akron lab is available on the Dyna-Purge website . Tim Cutler, Dyna-Purge business manager at Shuman, says that, in addition, 16 processors, mostly injection molders but also extruders and blow molders, have been testing the N&I formulation for over five months, and the results are in line with the university's tests.
Cutler says plastics processors can easily prove the performance for themselves. A 10-lb sample of the New & Improved Dyna-Purge M is available without cost, and a 55-lb box can be bought with a full satisfaction guarantee: If it doesn't perform better than the processor's current purging compound, Dyna-Purge will fully refund the cost of the product.