Obtención de cuero perlescente con la utilización de diferentes niveles de ligante poliuretano en combinación con ligante acrílico.

Abstract

The objective was to obtain pearlescent leather with the use of different levels of polyurethane binder in combination with an acrylic binder, and it was developed in the Leather Tannery Laboratory of the Faculty of Livestock Sciences of ESPOCH. The number of experimental units was 18 goat skins. After tanning and obtaining pearlescent leather, carried out tests of physical resistance and sensory ratings and determined that the highest results in tensile strength and dry rub were obtained when using 175 g, of T2 polyurethane binder (175 g) with 2937.29 N / cm2 and 125 cycles respectively. For the elongation percentage, the best behaviour was presented by T1 treatment with 87.50%. However, all these values are higher than the minimum required by the quality standards of the Spanish Association in the Leather Industry. The highest tact score was determined with 4.67 points in the T3 treatment, the same as for brilliance with 4.83 and coverage with 4.50 points and a rating of excellent, after being evaluated by a qualified judge. The lowest production cost was obtained from treatment one with a value of $ 1.13 and the most significant benefit from treatment three with a value of 1.26; that is, for every dollar invested, a profit of 26 cents was obtained. It is concluded that the most suitable level is polyurethane binder with 200 grams combined with 150 grams of acrylic binder, for the production of premium pearl leathers for footwear or leather goods. So it is recommended to tan with 200 grams of polyurethane binder to obtain a top quality material.