Samming is a crucial moisture-reduction process in leather manufacturing, carried out after tanning and before drying. Its primary purpose is to remove excess water from the hides while preserving their structure and uniformity.

Once the tanning process is complete, the hides retain a significant amount of moisture, which needs to be reduced before any drying or finishing can take place. The samming process uses heavy-duty samming machines—equipped with rollers and high-pressure systems—to mechanically press out water from the tanned leather. This not only reduces the overall moisture content but also helps in flattening and smoothing the leather, making it more manageable for further treatment.

Efficient samming is vital to maintain the dimensional stability of the hides. If too much water remains, it can lead to uneven drying, poor dye penetration, and inconsistent finishing. On the other hand, overly aggressive water removal may damage the fiber structure. That’s why this step requires a balanced approach to achieve the optimal moisture level—usually between 55% and 65%—depending on the leather type and its intended use.

In addition to water removal, samming plays an important role in improving processing efficiency. By reducing the drying time and ensuring more consistent moisture distribution, it helps create a more uniform leather surface, setting the stage for better dyeing, conditioning, and finishing in the later stages. The process is tailored based on leather thickness, softness, and final product requirements.

Key highlights of the samming process include:

• Mechanical removal of excess water after tanning
• Preparation of hides for controlled and even drying
• Moisture reduction to optimal levels without damaging fibers
• Enhanced surface uniformity and dimensional stability
• Custom adjustments based on leather type and processing needs