Abstract
Heat stabilized oriented polypropylene films have a wide variety of packaging applications. In order to produce quality film with acceptable variation in thickness and high orientation, proper selection of resin is important. Three samples of oriented film grade polypropylene resin have been tested and the correlation of their molecular weight and molecular weight distribution with viscoelasticity has been studied. It has been found that small differences in molecular weight and molecular weight distribution signifi- cantly affect the viscoelastic properties of the melt and, in turn, the processing characteristics of the resin
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