PROCESS FOR PRODUCTION OF WATER-ABSORBING ARTICLES

摘要

According to a first aspect of the present invention, a process for production of a water-absorbing article including a substrate and a coating film formed on the substrate and formed of a water-absorbing urethane resin is characterized in that : the process comprises an application step of applying a coating liquid to the substrate; the application step includes a step of supplying the coating liquid from a nozzle disposed above the substrate to a surface of the substrate conveyed horizontally; the coating liquid includes a solid matter and a solvent; the solid matter includes a mixture of a polyisocyanate, a polyol having ethylene oxide and a hydrophobic polyol; a concentration of the solid matter in the coating liquid is adjusted within a range from 5 to 30 % in mass; and a viscosity of the coating liquid is adjusted within a range from 1 to 3 mPa · s.