European Coatings Journal - 14.12.2018 | FORMULAT ION TRAINING

MODEL ANSWERS 11-2018:

In crackle and wrinkle-finish paints, "coating defects" are used in a controlled manner to form a texture. The following causes lead to the formation of special effects: Wrinkling: The surface "dries" more rapidly that the lower level. "Drying" of the lower layers leads to shrinkage. The surface which has already "dried" is able to compensate for the shrinkage process only by forming wrinkles. There may be several reasons for wrinkling. Crackling: lf the lower paint layers are more elastic than the upper coating, crackling occurs since the final coat is unable to ...
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