A rotary processing device (20) comprises a plurality of processing rolls (RP1, RP2), an anvil roll (RA) arranged facing the processing rolls, and an upstream nip roll (RNU) and a downstream nip roll (RND) arranged on the upstream and downstream of the processing rolls while facing the anvil roll. A belt like body (W) is so carried as to pass through between the upstream nip roll and the anvil roll and, next, through between the processing roll and the anvil roll and, thereafter, through between downstream nip roll and the anvil roll, so as to be processed by the processing rolls.
