Rubber rollers are classified into numerous types based on their applications and material compositions. Among them, printing rubber rollers are widely recognized. Today, we will introduce another significant category: polyurethane (PU) rubber rollers.

PU rubber rollers exhibit exceptional chemical stability, particularly demonstrating robust resistance to solvents such as diesel, gasoline, lubricating oils, kerosene, alcohols, and saline solutions. This makes them compatible with diverse ink formulations and printing methodologies.

The superior performance of PU rollers stems from their thermosetting polyurethane chemistry, which forms crosslinked networks through isocyanate-polyol reactions. This molecular architecture enables tailored hardness (Shore A 20-95), density (0.8-1.3 g/cm³), and resilience characteristics. Advanced formulations may incorporate nano-additives (e.g., graphene for thermal conductivity, PTFE for reduced friction) to further enhance specialized applications.

In summary, polyurethane rubber rollers represent a paradigm shift in industrial roller technology, offering unmatched longevity, precision, and adaptability across demanding printing and material handling environments.