Vacuum drying is a specialized moisture-removal process that helps rapidly reduce water content while simultaneously flattening the leather. It plays a key role in enhancing the dimensional stability and texture of both wet and occasionally dry skins.

After processes like dyeing and setting out, leather still retains moisture that must be removed in a controlled and uniform way. In the vacuum process, the skins are placed between heated metal plates inside a vacuum chamber. When the vacuum is activated, it creates a pressure differential that extracts water from the leather without requiring high external heat. This method is not only energy-efficient but also helps preserve the softness and structural integrity of the leather.

One of the key advantages of vacuum drying is its ability to flatten the leather evenly, eliminating minor wrinkles and achieving a smoother, more refined surface. This is particularly beneficial for thin or delicate leathers that may be sensitive to conventional drying methods. In certain cases, vacuum treatment is also applied to dry skins to reactivate and flatten them before additional finishing steps.

The process is adjustable depending on the type, thickness, and intended use of the leather. Temperature, duration, and vacuum intensity are carefully controlled to ensure optimal results without compromising leather quality.

Key highlights of the vacuum process include:

• Efficient extraction of excess moisture using pressure-based vacuum systems
• Gentle flattening of skins for a smooth and even texture
• Reduced drying time with minimal thermal impact on leather fibers
• Suitable for both wet and occasionally dry skins
• Enhanced stability and preparation for final finishing stages