How to control leather strength
Strength properties have always been a topic of discussion, especially for thicker, firmer leathers as well as for soft and light nappa’s. A test to give oneself a first impression of its strength, is done by cutting a small distance from the edge and then tearing it by hand.
It is a simple and effective way of assessing the leather. Subsequent calibrated testing, more often than not, confirms one’s suspicions.
Many factors influence the leather’s strength properties. Insufficient strength properties are usually a result of a damaged fibre structure. It can occur in many stages of the process. The problem may be traced back to soaking or liming, splitting or shaving or even to retannage and fatliquoring.
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Light & Heat
In this edition Smit & Zoon shares a synopsis on the topic ‘Light fastness & Heat resistance’. Learn about the yellowing of leather by the influence of warmth and/or light and time. How do you minimize the risk and how are the assessments done?
Learn about the important aspects when making soft leather, the influence of wet-end processes and which Smit & zoon products are most suitable for your optimal leather properties.
’Chrome Six’ is a presence in leather and an undesirable effect related to the use of chrome-tanning agents. Since tanning with chrome salts constitutes roughly 80% of the processing technology worldwide, the debate about the risk for its presence is too important to be based on hearsay alone and should, therefore, be based on facts.