Like Dr. Doar at Clemson in the article, “Predicting Permeability and Transmission Rate for Multilayer Materials” by Kay Cooksey, Kenneth S. Marsh, and Leroy H. Doar (September, p. 60), I was similarly confused after consulting various packaging textbooks and refereed literature while developing a packaging course for our department’s IFT accreditation application.
The situation is such that, in what are otherwise good textbooks, the authors’ confusion (or neglect) over terms and units for permea…