Obtención para cuero de calzado femenino utilizando tres niveles de taninos sintéticos en conbinación con cromo en pieles caprinas

Abstract

In the laboratory of tanning skins, Faculty of Animal Science ESPOCH, 24 tanning goatskins with different levels of synthetic tannins (7, 8 and 9%) was performed in combination with 4% chromium sulfate, modeling a completely randomized design, simple, 3 treatments were used, with 8 repetitions each. The results infer that the most appropriate level of tannin was 9% (T3) because the material produced is of high quality. The analysis of the physical characteristics of tanned leather with 9% of synthetic tannin (T3) determined the highest result of tensile strength (2873,13 N/cm2), percent elongation (63,13), and shrinkage temperatura (87,59°C), which far exceed the quality demands for leather intended for the manufacture of footwear. Sensory evaluation of tanned leather 9% synthetic tannin, reported better softness (4.75 points), roundness (4,75 points), and fullness (4,50 points), reaching the three variables scores excellence. When performing economic evaluation best tanning results is determined by 9% synthetic tannin (T3), with a benefit / cost ratio of 1,42 meaning that for every dollar invested a profit of 42 cents or gain expected 42% which is very encouraging as it excedes the interest provides similar activities. It is recommended tanning leather 9% synthetic tannin to produce very strong and with excellent sensory skills leathers.