| Résumé : |
1.1. By adhesion we mean the force required to pull the finish away from the underlying leather, the force being applied steadily at an angle of about 90° to a solid carrier to which the finish has been stuck.
1.2. Depending on the way the leather has been finished, the adhesion of the finish to the leather can be so low over the whole area or over only part of it be so low over the whole area or over only part of it that the finish separates from the leather during use. With finishes consisting of several layers, the separation may occur between the layers, for example, between the pigmented layer and the groung.
1.3. This method is valide for all finished leathers with a smooth surface, the surface of which can be made to adhere without penetration of the adhesive. Preliminary experiments may be necessary to clarify whether these conditions obtain. |
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Proposed test for adhesion of finish to leather : Draft method IUF 470 (march 1988) in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 72 (Année 1988)
