Patent ID: 7005042

Claim:
Nip press belt of a wet press ( 1 ) or a calendar with elongated nip, in particular for a paper, cardboard or tissue machine comprising: a flexible carrier layer ( 9 a ) that is impermeable to liquids and is made of soft rubber having a hardness in the range between 20 and 50 P+J and an integrated textile reinforcement ( 9 b ); and a covering layer ( 9 c ) fixedly connected to the carrier layer or formed together therewith, which consists substantially of soft rubber and has a hardness in the range between 20 and 50 P+J; the belt being characterized in that in a three-point bending test of a specimen of the nip press belt 30 mm wide and 5 mm thick, set onto two supports 100 mm apart, the force that must be exerted to produce a deflection of 15 mm is 17 N or less, and the associated bending stress is 110 N/cm 2 or less.