Roduit B, Borgeat C H, Cavin S, Fragnière C, Dudler V
AKTS AG--Advanced Kinetics and Technology Solutions, TECHNO-Pôle, Siders, Switzerland.
Food Addit Contam. 2005 Oct;22(10):945-55. doi: 10.1080/02652030500323997.
Computer programmes are available to predict, for consumer protection purposes, the migration of additives from a polymeric package during its contact with food. However most of these programs were developed to estimate migration only from single layer polymeric packaging under isothermal conditions. In this work a diffusion model was developed to simulate the migration from multilayer packaging and under non-isothermal temperature conditions, too. Finite Element Analysis (FEA) is used as a numerical approximation method to solve the diffusion equations describing such processes. The possibilities and limitations of the FEA method are presented and the correlation between experimental and computed results is discussed.
为保护消费者，现有计算机程序可预测添加剂在聚合物包装与食品接触过程中的迁移情况。然而，这些程序大多是为仅在等温条件下估计单层聚合物包装中的迁移而开发的。在这项工作中，开发了一个扩散模型，用于模拟多层包装以及非等温温度条件下的迁移情况。有限元分析（FEA）被用作一种数值近似方法来求解描述此类过程的扩散方程。文中介绍了有限元分析方法的可能性和局限性，并讨论了实验结果与计算结果之间的相关性。
