Collaborative robots are not used for very large movements or to move large masses, but to repeat operations similar to those performed by a human, even alongside him and respecting his safety. In fact, these robots can be easily blocked with a simple touch of the hand. In one of the CNI applications, the collaborative robot was used for a testing system designed to check toilet paper rolls, specifically the tearing of the paper flap. The robotic arm is commanded to take and tighten the paper flap, with a calibrated force all the tears present in a roll are repeatedly performed, thus verifying the correct processing of the paper. The check is visual and is performed via a camera. This operation was previously performed manually, but it was extremely wearing for the operator’s joints, causing serious damage after just a few days of work. In this case, the collaboration of the robot was highly appreciated.