Sammying and Setting Machine

The Sammying and Setting Machine is a critical component within the Integrated Leather Processing System responsible for mechanically stretching leather hides after tanning to eliminate wrinkles, ensure uniform thickness across the entire surface, and properly set the grain pattern. This process prepares the leather for subsequent finishing operations by creating a smooth, consistent substrate. The machine operates by applying controlled mechanical force through a series of rollers, clamps, or tensioning mechanisms, stretching the hide in multiple directions while maintaining consistent pressure. This action aligns collagen fibers, removes residual moisture-induced shrinkage, and sets the desired dimensions before the leather fully dries or undergoes chemical setting treatments. The equipment is designed for integration into continuous leather processing lines, with working widths ranging from 1500 to 3200 mm and feed speeds from 5 to 30 m/min, accommodating various hide sizes and production throughputs. Stretching force can be adjusted between 10 and 50 kN, depending on hide thickness and desired final properties. The machine achieves a thickness tolerance of ±0.05 mm, ensuring uniform thickness after setting. Operating parameters include an ambient temperature range of 10–40 °C, relative humidity of 40–70%, and an electrical supply of 380–480 V AC (three-phase, 50/60 Hz) per IEC 60038. The installed power ranges from 15 to 45 kW, and the machine weight varies from 5000 to 12000 kg, with footprint dimensions ranging from 4000×2000×1800 mm to 8000×3000×2500 mm. The IP rating is IP54–IP65 per IEC 60529, suitable for dusty or wet environments. Materials used in construction include stainless steel, hardened alloy steel, and synthetic rubber, ensuring durability and resistance to corrosion. All listed parameters are reference ranges and must be verified with the legal manufacturer for specific models and applications. The machine is not a standalone unit but a component of a larger system, and its selection depends on hide characteristics, production capacity, and integration requirements.

The machine uses a series of rollers, clamps, or tensioning mechanisms to apply controlled mechanical force to the leather hide, stretching it in multiple directions while maintaining consistent pressure. This action aligns collagen fibers, removes residual moisture-induced shrinkage, and sets the desired dimensions before the leather fully dries or undergoes chemical setting treatments.