SHOE PRESS BELT FOR PAPERMAKING

摘要

PROBLEM TO BE SOLVED: To provide a shoe press belt excellent in anti-crack generation properties.SOLUTION: The shoe press belt for papermaking comprises an integrated structure of a reinforcement fiber base material 6 and polyurethane layers 21 and 22, and the reinforcement fiber base material is embedded in the polyurethane and is formed with the polyurethane. Used in the shoe press belt is a polyurethane that is obtained by mixing a urethane prepolymer (A) for forming the polyurethane layer and a mixed hardening agent (B) including 70-99.5 mol% of dimethylthiotoluenediamine (c) and 0.5-30 mol% of other hardening agent (d) as a chain extender for the urethane prepolymer (A) in such a manner that the ratio of the equivalent ratio (-H/-NCO) of an active hydrogen group (-H) in the mixed hardening agent to an isocyanate group (-NCO) in the urethane prepolymer (A) becomes 1.02 to 1.15, and heating and hardening the mixture.