Aplicación de un acabado tipo charol acuoso con diferentes niveles de resinas de poliuretano en conbinación con caseína para cuero de calzado

Abstract

In the skins tannery laboratory of the Animal Science Faculty (ASF), (CIZ) of the ESPOCH, it was evaluated the finishing of goat skin using 3 levels of polyurethane resin (400, 450 and 500 g), with 8 repetitions, that is to say, 24 experimental units which were modeled under a completely simple random design. The results indicate that the most appropriate level of polyurethane resins was 500g./kg paint (T3) because the physical resistance meet quality requirements, established in the technical standards of “Leather Spanish Association” specifically retaining resistance (2764.62 N / cm2), percentage elongation (62.50%) and dry abrasion resistance (471.88 points). The best bright (4.63 points), dry (4.75 points) touch and color intensity (4.63 points), it was reported to apply 500 g of polyurethane resins (T3), reaching in each of them an excellent rating for its softness and very intense color, which is very attractive to consumers, so their preference and consumption increases. The higher profitability in goat leather with patent leather finish – type was generated by adding 500 g of polyurethane resins (T3), since the benefit cost ratio was 1.63, which means that for every dollar invested a profit of 63 cents or a profit of 63% has been reached, which is interesting because at the present time for the economic instability of the country so pioneering technological alternatives like this research work.