Just Enough of a Good Thing: Case Studies of Meeting Package Material Requirements
John Brace
Tuesday, February 15, 2022
2:00 PM - 2:30 PM (CST)
Location Name
AT&T Conference Center - Zlotnik Grand Ballroom

Container modeling and shelf-life prediction can be highly cost-effective as a way to 'test' multiple variables, particularly if they are container-design or -material variables.  Using industry-standard software based on permeation/diffusion fundamentals, we analyze and predict whole-package ingress/egress as well as permeant interactions with product.  Rigids, flexibles and closures are addressable.  Selected examples will be given in PET, polyolefins or engineered-barrier structures of:  

  • SLLF determination by means of rapid prediction of oxidation and vitamin-destruction limit tests; 
  • filled-package (surrogate or product) long-term dO2 test-curve predictions and interpretation; 
  • dry-product isotherm development for clumping/crispness prediction in foods and food supplements, including H2O partitioning in product, HS and wall materials; 
  • test-matrix reduction using Aw-based predictions of simulant (OTC surrogate) retention; and 
  • layer-placement effects and barrier-property loss in hygroscopic barrier polymers (via water sorption and Tg simulation).  
  • We can simulate empty or filled containers at several levels of fidelity, ranging from simple OTR to O2-scavenger depletion, to lipid or vitamin oxidation,to dry-product isotherms. 
  • We can now create and 'test' whole arrays of package design parameters with greatly-reduced tooling trials or part making or stability tests.  
  • Using modeling software such as M-RULE® we can predict scalable final-part performance and design to meet functional requirements – how much package material 'will do the job' – thus reducing material usage.  Additionally, confirmation of empirically verifiable (testable) parameters will be discussed.