PURPOSE: To provide a calendering method for preventing damages to thermopressing metallic calender rolls caused by the blocking of short fibers and pulp in a heat-resistant nonwoven fabric or by foreign matters contaminated therein.

CONSTITUTION: The title calendering method is characterized by treating a nonwoven fabric with low temperature metal/metal calendering rolls at ≤50°C under a linear pressure of ≥100kg/cm before the following a calendering, in a method for calendering the nonwoven fabric containing an aromatic polyamide pulp and aromatic polyamide short fibers in amounts of ≥20wt.%. Since the blocking of the short fibers and the pulp in the nonwoven fabric and foreign matters contaminated therein, etc., are compressed by the low temperature metal/metal calendering process before the thermopressing calendering process, the damages to the thermopressing calender rolls can be prevented.