Albes leather production - Vacuum-Hang dry - During vacuum drying, the sides are placed with the grain side down on a plate with a temperature of 40°C. Under the influence of a vacuum, the leather is further dehumidified.The leathers are slightly dried, and the fibers are fixed by doing so. Hang Dry The leathers are not yet fully dried. The last drying process is carried out in by hang drying. Here, any remaining moisture in the leathers evaporates.