Glazing leather - Glazed leather
In the glazing treatment, the leather surface is compressed by strong friction and pressure so that it becomes smooth and shiny. To achieve a particularly high gloss finish, non-thermoplastic binders are applied to the leather surface, which prevent the leather from becoming soft and sticky during this process. Mostly, casein-based binders are used. The process is carried out by a glazing machine. Nevertheless, the manual effort for the glazing is enormous, which increases the cost of production. Alternatively, the leather is rolled smooth with a metal roller under high pressure.