Imagine for a moment that PET resin costs 1 per pound. Now reduce the material to 20 percent relative density, and the price falls to 20 cents per pound. Add process costs of 40 cents and the total is 60 cents per pound — a 40 percent net savings. That's the kind of math executives at a startup company are doing to aid in selling their new solid-state microcellular expansion technology for plastic foams. The process was developed by researchers at the University of Washington and is being marketed by privately held development-stage company MicroGreen Polymers Inc. of Arlington, Washington.
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