| 摘要 |
The present invention provides a process for producing a sheet-shaped object which has a piled graceful appearance and a soft texture and which has even better wear resistance, the process being characterized in that the following steps (1) to (5) are conducted sucessively. (1) A step in which a polyvinyl alcohol having a degree of saponification of 98% or higher and a degree of polymerization of 800-3,500 is dissolved in water to obtain an aqueous polyvinyl alcohol solution in which the contents of methyl acetate, acetic acid, and methanol are 50 ppm or less each; (2) a step in which the polyvinyl alcohol is imparted to a fibrous base that comprises, as the main constituent component, fibers capable of forming ultrafine fibers, in an amount of 0.1-50 mass% relative to the fibers of the fibrous base; (3) a step in which ultrafine fibers having an average single-fiber diameter of 0.3-7 μm are formed from the fibrous base obtained in the step (2); (4) a step in which a water dispersion type polyurethane is imparted to the fibrous base obtained in the step (3); and (5) a step in which the polyvinyl alcohol is removed from the fibrous base obtained in the step (4). |
