Method for producing sheet transport roll, urethane composition used therefor, and sheet transport roll obtained thereby

摘要

A method for producing a sheet transport roll with an appropriate cure and short curing time so as to form a textured roll surface without defects caused by air inclusion or the like and thereby obtain a high friction coefficient, and also an excellent abrasion resistance. The method comprises the steps of: providing a mold having an inner textured surface and containing a shaft 1 for the roll; filling a urethane composition into the mold; and forming a urethane roll portion 2 on an outer periphery of the shaft by hardening the urethane composition, the urethane composition comprising: (A) a polyether polyol blend containing polytetramethyleneether glycol (PTMG) and polypropylene glycol (PPG) in a weight ratio of PTMG/PPG=99/1 to 50/50; (B) a polyisocyanate; (C) a chain lengthening agent; (D) a plasticizer; and (E) a diazabicyclo amine salt.