A Study Regarding the Characteristics of the Flexible Plastic Materials Used for Bread Packaging

Abstract

In this research there were tested different types of one layer and multiple layers foils used for the bread packing. The foil testing for gases permeability was done by the manometer method and the permeability determination at water vapors was done by the humidity detector method. The foils studied presented a different permeability at gases and water vapors according to their one layer or multiple layers structure. In the case of the evaluation of the global migration level we observed that all the studied foils presented values under the limit imposed by law and most of the values for Pb and Cd were undetectable.