Conclusions on Moisans Method

There is little to say about the technique employed at that time [37]. It was a perfect apparatus, but it could perhaps, be used in a better way by considering the purpose of food packages, with a much lower concentration of diffusing substance as well as a thicker 

It is always surprising, even problematical, to use semi-infinite media for very thin sheets. The mathematical treatment is possible and easy to apply, by using the equations shown in Chapter 2 obtained with the separation of variables with finite thicknesses [39, 40]. 

Moreover, in order to keep the concentration constant on the surface in contact with the source (C = S), it is necessary to find a polymer source which is able to absorb a large quantity of diffusing substance, and to make sure that the concentration on this surface is maintained equal to the solubility of the substance in the source. 

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