To avoid distortion of the substrate during the tensile test, it is common to use a sandwich construction. thin metal, plastics and wood, or rigid, e.g. Different procedures are given according to whether the substrate is deformable, e.g. The test can be applied using a wide range of substrates. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in adhesion. These test methods have been found useful in comparing the adhesion behaviour of different coatings. method C: using dollies, one as a painted substrate. method B: testing from one side only, using a single dolly, suitable for rigid substrates only method A: using two dollies, suitable for testing both rigid and deformable substrates This document specifies three methods for determining the adhesion by carrying out a pull-off test on a single coating or a multi-coat system of paint, varnish or related product.
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