Abstract
To test the autohesion of hard PVC foils, delamination in acetone was used. The following points are discussed briefly: the diffusion of acetone in PVC, the cause of delamination, disadvantages of the method and the information which can be derived from swelling in acetone. For one type of PVC foil, the results were expressed in terms of a regression equation. The course described by the regression equation does not agree with any existing autohesion theories. Therefore, the hole theory of autohesion was formulated, in good agreement with the experimental values.
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