Patent ID: 7584674

Claim:
A method for measuring at least one of a nip pressure and a pressure profile in a nip, using at least one nip-forming roll having a film pressure sensor covered by at least one coating layer, the at least one coating layer being protective and resilient with respect to the film pressure sensor, said method comprising: receiving the film pressure sensor in a groove associated with the at least one nip-forming roll; applying a topmost coating layer of the at least one coating layer over the film pressure sensor; and applying a pressure within the nip to the topmost layer of the at least one coating layer so as to deform the at least one coating layer and compress the film pressure sensor, the deformation being proportional to the pressure, and the film pressure sensor generating an electric signal in response to the deformation, wherein the at least one coating layer consists of a cold-curing polymer including at least one of a soft polyurethane and a composite thereof, the cold-curing polymer having a cured hardness of between about 1 P&J and about 250 P&J, and preferably between about 10 P&J and about 130 P&J.