Polymer Solutions Incorporated (PSI) was contacted with a request to confirm that a film sample matched its proposed seven-layer construction. The proposed construction was provided, as shown in Figure 1. It was of interest to determine the number of layers, as well as the identities of each layer, of the film, as described below.
The film sample was tested using Differential Scanning Calorimetry (DSC). This analytical technique reveals the thermal transitions that occur within a material. A specimen weighing approximately 7 mg was hermetically encapsulated in aluminum DSC sample pans for analysis. Printed labeling…
