Utilización de precurtiente resínico en combinación con diferentes niveles de sulfato de aluminio para la curtición de pieles ovinas en la obtención de cuero para calzado

Abstract

In the Workshop, of: leather tannery of the FCP, of ESPOCH, was evaluated the tanning with different levels of aluminum sulphate in combination with resin resins in the production of leather for footwear, using 21 sheep skins that were distributed in 3 treatments and 7 replicates, modeled with a simple completely random design, The results indicate that the adequate level of aluminum sulphate combined with 3% pre-cured resinical to tanning ovine skins produces a raw material for the production of chromium-free footwear to avoid problems of environmental legislation to the company. The higher tensile strength (1217.95 N/cm2), and shrinkage temperature (64.86 ° C), are achieved by using 7% aluminum sulphate (T1), while the greater elongation was achieved with 8% tan aluminum sulphate, allowing leather to meet technical standards. The best weighting infilling (4.71 points) and flower fineness (4.86 points) is obtained when tanning with higher levels of aluminum sulphate (T3), while the best softness (4.57 points), is achieved with lower tanning levels. The highest profitability is achieved by working with 7% aluminum sulphate as the cost benefit ratio was 1.28; that is to say for each dollar invested a profit of 28 cents is expected that is high in relation to other similar industrial activities that register lower profit margins and above all involve greater economic risks.