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- W90752644 abstract "We investigated a drying method that will enable leather to be dried under vacuum and stretch sequentially to improve area yield. Vacuum drying offers fast speed at a low temperature, which would be advantageous to heat-vulnerable chrome-free leather. Adding a toggle action after vacuum drying could significantly increase area yield. Using a statistical experimental design, we formulated regression models describing how drying variables affect mechanical properties and area yield of chrome-free leather tanned with glutaraldehyde. An effort was also made to estimate the effects of conditioning, staking, and drum milling on the area retention gained by toggle stretching. This study showed that the direction the stretch was applied had a significant effect on the area retention. Results also indicated that conditioning and staking have little effect on area retention, whereas the drum milling caused a significant drop in area retention. Our study also showed under an optimal drying condition, a 12% increase in area yield with good properties can be achieved.ResumenHemos investigado un metodo de secado que permitiria al cuero ser secado al vacio y posteriormente estirado para mejorar el rendimiento superficial obtenible. El secado al vacio ofrece velocidad en el procesamiento a bajas temperaturas, lo cual seria ventajoso para cuero exento de cromo el cual no es muy resistente al calor. Anadiendo la accion de estirado por ganchos posteriormente al secado al vacio, podria significativamente aumentar el rendimiento superficial. Por medio de un diseno experimental estadistico para modelos de regresion que describen como las variables del secado afectan las propiedades mecanicas asi como el area obtenible en cueros exentos de cromo curtidos al glutardialdehido. Un esfuerzo tambien se efectuo para estimar los efectos del acondicionado, ablandado y fulonado sobre la retencion del area adicional obtenida por medio del estiramiento por medio de ganchos. Este estudio demostro que la retencion del area adicional dependio de la orientacion del estiramiento. Los resultados tambien demostraron que el acondicionado y ablandamiento tuvieron poco efecto en retencion de area adicional obtenida, mientras que el fulonado ocasiono una significativa merma en el area adicional obtenida. Nuestro estudio demostro que bajo optima condicion de secado, hasta un 12% de incremento en area es obtenible manteniendo buenas propiedades fisicas a la vez." @default.
- W90752644 created "2016-06-24" @default.
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- W90752644 date "2011-03-01" @default.
- W90752644 modified "2023-09-28" @default.
- W90752644 title "Drying leather with vacuum and toggling sequentially" @default.
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