%0 Journal Article %T Unlimited flex life in the molded‐in hinge in polypropylene: A structural hypothesis %A Clark, E. S. %A Spruiell, J. E. %J Polymer Engineering & Science %V 16 %N 3 %P 176-181 %@ 0032-3888 %D 1976-03-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve