Curtición de pieles caprinas con diferentes niveles de Caesalpinia Spinosa (tara) en combinación con sulfato de aluminio para calzado

Abstract

The present investigation was carried out in the Leather Tanning Laboratory of the Faculty of Livestock Sciences of Escuela Superior Politécnica de Chimborazo (ESPOCH) to tan goat skins with different levels of Caesalpinia spinosa (tara), in combination with a fixed-level of aluminum sulfate to footwear, for the investigation 15 goat skins of adult animals were used, for each one of the treatments, which were acquired in the Municipal Market of Riobamba. Both physical and sensory results were modeled under a Simple, Completely Random Design, with three treatments and five repetitions each. The physical tests were carried out in the physical resistance equipment of the Leather Tanning Laboratory. They were based on the technical norms of the Spanish Association of the Leather Industry, while the sensory qualifications were carried out with the criteria of a competent judge. The results indicate that the use of 12 % tare reported a tensile strength of 2836.39 N/cm2, percentage elongation of 69.0 % with 14 % tare, and resistance to dry abrasion of > 150 cycles. It was using 12 and 14 % tare. Similarly, the fullness and curvature registered 4.80 and 4.60 points using 14 % tare, while the softness using 10 % tare obtained 4.60 points. The best cost-benefit was 1.36 when implementing 12 % tare. It is concluded that using tare positively influences the leather’s physical characteristics, improving its quality, giving more excellent resistance to tension and elasticity, and preventing it from breaking easily. Researching other combinations at other levels and with different tanning agents that are environmentally friendly is recommended.