Evaluación de una curtición mixta de granofin F 90, más tres diferentes niveles de Caesalpina spinosa (Tara)

Abstract

In the laboratory of skins tannery FCP, of ESPOCH, evaluated a tanning mixed with Granofín F 90, in combination with 4% Granofín F 90 (T1), by adding three different levels of Caesalpinia spinosa (tara), with 3 treatments, 5 replications and two consecutive tests obtaining 30 experimental units, performer under a randomized desing completely in a Bifactorial arrangement. The results determined that the appropriate level was 7% de Caesalpinia spinosa (Tara), due to the obtained leather prsent high quality to make articles to be sold in national and international demanding markets. The application of 7% Tara provided the most tensile strength (3140,69 N/cm2), and elongation percentage (53,67%), while the application 9% of tara (T3), allows having higher temperatures of shrinks, but however the reported data exceeded the standards of leather. The sensory analysis determined the highest grades when using Tara 7%, because it obtains a better consistency (4,60 points), and thickness (4,50 points), while the best roundness was reported in leathers treatment T3 (9%), with 4,70 points and excellent grade. In the economic evaluation determined a relation cost benefit of 1,28 for the treatment T1 (7%), which represents a profit margin of 28%, per each dollar spent. Finally it recommends using lower levels of Tara (7%), there by it helps to raise the classification of skins and produce only a high quality material